[Freeipa-users] Freeipa 4.2.0 hangs intermittently
Rakesh Rajasekharan
rakesh.rajasekharan at gmail.com
Mon Sep 5 12:05:46 UTC 2016
Hi Thierry,
I was able to now reporduce the issue..
the ns-slapd process just got hung,.. however, no core file was generate..
I manually created a coredump using gcore and then took a strace of it
this is strace from the coredump generated
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/sbin/ns-slapd...Reading symbols from
/usr/sbin/ns-slapd...(no debugging symbols found)...done.
(no debugging symbols found)...done.
[New LWP 105159]
[New LWP 105160]
[New LWP 105161]
[New LWP 105162]
[New LWP 105163]
[New LWP 105164]
[New LWP 105165]
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[New LWP 105171]
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[New LWP 105174]
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[New LWP 105176]
[New LWP 105177]
[New LWP 105178]
[New LWP 105179]
[New LWP 105180]
[New LWP 105181]
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[New LWP 105183]
[New LWP 105184]
[New LWP 105185]
[New LWP 105186]
[New LWP 105187]
[New LWP 105188]
[New LWP 105189]
[New LWP 105190]
[New LWP 105191]
[New LWP 105192]
[New LWP 105193]
[New LWP 105194]
[New LWP 105195]
[New LWP 105196]
[New LWP 105197]
[New LWP 105198]
[New LWP 105199]
[New LWP 105200]
[New LWP 105201]
[New LWP 105203]
[New LWP 105215]
[New LWP 105158]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/sbin/ns-slapd'.
#0 0x00007f1b48ae69b3 in select () from /lib64/libc.so.6
Thread 44 (Thread 0x7f1b4b6d9840 (LWP 105158)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b2c3 in PR_EnterMonitor () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b7125ed in setup_pr_read_pds ()
No symbol table info available.
#3 0x00007f1b4b715fd9 in slapd_daemon ()
No symbol table info available.
#4 0x00007f1b4b707c6c in main ()
No symbol table info available.
Thread 43 (Thread 0x7f1a5df0f700 (LWP 105215)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b71df25 in ps_send_results ()
No symbol table info available.
#3 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#4 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#5 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 42 (Thread 0x7f1b03fe7700 (LWP 105203)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b71df25 in ps_send_results ()
No symbol table info available.
#3 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#4 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#5 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 41 (Thread 0x7f1b047e8700 (LWP 105201)):
#0 0x00007f1b48ae69b3 in select () from /lib64/libc.so.6
No symbol table info available.
#1 0x00007f1b4b2710e9 in DS_Sleep () from /usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#2 0x00007f1b4b712325 in time_thread ()
No symbol table info available.
#3 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#4 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#5 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 40 (Thread 0x7f1b04fe9700 (LWP 105200)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b433212f3 in __db_hybrid_mutex_suspend () from /lib64/
libdb-5.3.so
No symbol table info available.
#2 0x00007f1b43320640 in __db_tas_mutex_lock () from /lib64/libdb-5.3.so
No symbol table info available.
#3 0x00007f1b4343ae1b in __memp_fget () from /lib64/libdb-5.3.so
No symbol table info available.
#4 0x00007f1b4333e211 in __bam_search () from /lib64/libdb-5.3.so
No symbol table info available.
#5 0x00007f1b43329256 in __bamc_search () from /lib64/libdb-5.3.so
No symbol table info available.
#6 0x00007f1b4332d6c4 in __bamc_put () from /lib64/libdb-5.3.so
No symbol table info available.
#7 0x00007f1b433e46d5 in __dbc_iput () from /lib64/libdb-5.3.so
No symbol table info available.
#8 0x00007f1b433dfa0e in __db_put () from /lib64/libdb-5.3.so
No symbol table info available.
#9 0x00007f1b433f4fa4 in __db_put_pp () from /lib64/libdb-5.3.so
No symbol table info available.
#10 0x00007f1b3e8cf4cf in idl_new_insert_key () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#11 0x00007f1b3e8de5b5 in addordel_values_sv.isra.3 () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#12 0x00007f1b3e8df25a in index_addordel_values_ext_sv () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#13 0x00007f1b3e8df694 in index_addordel_values_sv () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#14 0x00007f1b3e8df75a in index_addordel_entry () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#15 0x00007f1b3e8e25fa in ldbm_back_add () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#16 0x00007f1b4b1e4cca in op_shared_add () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#17 0x00007f1b4b1e6020 in do_add () from /usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#18 0x00007f1b4b711303 in connection_threadmain ()
No symbol table info available.
#19 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#20 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#21 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 39 (Thread 0x7f1b057ea700 (LWP 105199)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 38 (Thread 0x7f1b05feb700 (LWP 105198)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 37 (Thread 0x7f1b067ec700 (LWP 105197)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 36 (Thread 0x7f1b06fed700 (LWP 105196)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 35 (Thread 0x7f1b077ee700 (LWP 105195)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b2c3 in PR_EnterMonitor () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b3e8c23e6 in dblayer_txn_begin () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#3 0x00007f1b3e8fe007 in ldbm_back_modify () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#4 0x00007f1b4b22b541 in op_shared_modify () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#5 0x00007f1b4b22c004 in modify_internal_pb () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#6 0x00007f1b3eb48b60 in ipapwd_apply_mods () from
/usr/lib64/dirsrv/plugins/libipa_pwd_extop.so
No symbol table info available.
#7 0x00007f1b3eb4c8e0 in store_new_keys () from
/usr/lib64/dirsrv/plugins/libipa_pwd_extop.so
No symbol table info available.
#8 0x00007f1b3eb4ead0 in ipapwd_extop () from
/usr/lib64/dirsrv/plugins/libipa_pwd_extop.so
No symbol table info available.
#9 0x00007f1b4b23bba2 in plugin_call_exop_plugins () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#10 0x00007f1b4b717efe in do_extended ()
No symbol table info available.
#11 0x00007f1b4b71141a in connection_threadmain ()
No symbol table info available.
#12 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#13 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#14 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 34 (Thread 0x7f1b07fef700 (LWP 105194)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 33 (Thread 0x7f1b087f0700 (LWP 105193)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 32 (Thread 0x7f1b08ff1700 (LWP 105192)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 31 (Thread 0x7f1b097f2700 (LWP 105191)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 30 (Thread 0x7f1b09ff3700 (LWP 105190)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b433212f3 in __db_hybrid_mutex_suspend () from /lib64/
libdb-5.3.so
No symbol table info available.
#2 0x00007f1b43320640 in __db_tas_mutex_lock () from /lib64/libdb-5.3.so
No symbol table info available.
#3 0x00007f1b433cad3a in __lock_get_internal () from /lib64/libdb-5.3.so
No symbol table info available.
#4 0x00007f1b433cb820 in __lock_get () from /lib64/libdb-5.3.so
No symbol table info available.
#5 0x00007f1b433f7142 in __db_lget () from /lib64/libdb-5.3.so
No symbol table info available.
#6 0x00007f1b4333e605 in __bam_search () from /lib64/libdb-5.3.so
No symbol table info available.
#7 0x00007f1b43329256 in __bamc_search () from /lib64/libdb-5.3.so
No symbol table info available.
#8 0x00007f1b4332ad0f in __bamc_get () from /lib64/libdb-5.3.so
No symbol table info available.
#9 0x00007f1b433e3ca6 in __dbc_iget () from /lib64/libdb-5.3.so
No symbol table info available.
#10 0x00007f1b433f2b02 in __dbc_get_pp () from /lib64/libdb-5.3.so
No symbol table info available.
#11 0x00007f1b3e8ce680 in idl_new_fetch () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#12 0x00007f1b3e8dcb26 in index_read_ext_allids () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#13 0x00007f1b3e8c7284 in keys2idl () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#14 0x00007f1b3e8c79e3 in ava_candidates.isra.0 () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#15 0x00007f1b3e8c7fd2 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#16 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#17 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#18 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#19 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#20 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#21 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#22 0x00007f1b3e90380c in subtree_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#23 0x00007f1b3e904e7f in ldbm_back_search () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#24 0x00007f1b4b2321d6 in op_shared_search () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#25 0x00007f1b4b72333e in do_search ()
No symbol table info available.
#26 0x00007f1b4b7113c3 in connection_threadmain ()
No symbol table info available.
#27 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#28 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#29 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 29 (Thread 0x7f1b0a7f4700 (LWP 105189)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 28 (Thread 0x7f1b0aff5700 (LWP 105188)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 27 (Thread 0x7f1b0b7f6700 (LWP 105187)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 26 (Thread 0x7f1b0bff7700 (LWP 105186)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b433212f3 in __db_hybrid_mutex_suspend () from /lib64/
libdb-5.3.so
No symbol table info available.
#2 0x00007f1b43320640 in __db_tas_mutex_lock () from /lib64/libdb-5.3.so
No symbol table info available.
#3 0x00007f1b433cad3a in __lock_get_internal () from /lib64/libdb-5.3.so
No symbol table info available.
#4 0x00007f1b433cb820 in __lock_get () from /lib64/libdb-5.3.so
No symbol table info available.
#5 0x00007f1b433f7142 in __db_lget () from /lib64/libdb-5.3.so
No symbol table info available.
#6 0x00007f1b4333e605 in __bam_search () from /lib64/libdb-5.3.so
No symbol table info available.
#7 0x00007f1b43329256 in __bamc_search () from /lib64/libdb-5.3.so
No symbol table info available.
#8 0x00007f1b4332ad0f in __bamc_get () from /lib64/libdb-5.3.so
No symbol table info available.
#9 0x00007f1b433e3ca6 in __dbc_iget () from /lib64/libdb-5.3.so
No symbol table info available.
#10 0x00007f1b433f2b02 in __dbc_get_pp () from /lib64/libdb-5.3.so
No symbol table info available.
#11 0x00007f1b3e8ce680 in idl_new_fetch () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#12 0x00007f1b3e8dcb26 in index_read_ext_allids () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#13 0x00007f1b3e8c7284 in keys2idl () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#14 0x00007f1b3e8c79e3 in ava_candidates.isra.0 () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#15 0x00007f1b3e8c7fd2 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#16 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#17 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#18 0x00007f1b3e90380c in subtree_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#19 0x00007f1b3e904e7f in ldbm_back_search () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#20 0x00007f1b4b2321d6 in op_shared_search () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#21 0x00007f1b4b24294e in search_internal_callback_pb () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#22 0x00007f1b4b242be8 in search_internal_pb () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#23 0x00007f1b4b72149b in ids_sasl_canon_user ()
No symbol table info available.
#24 0x00007f1b491e193b in _sasl_canon_user () from /lib64/libsasl2.so.3
No symbol table info available.
#25 0x00007f1b491e1c4c in _sasl_canon_user_lookup () from
/lib64/libsasl2.so.3
No symbol table info available.
#26 0x00007f1b430e9fb9 in gssapi_server_mech_step () from
/usr/lib64/sasl2/libgssapiv2.so
No symbol table info available.
#27 0x00007f1b491edb9b in sasl_server_step () from /lib64/libsasl2.so.3
No symbol table info available.
#28 0x00007f1b4b72283b in ids_sasl_check_bind ()
No symbol table info available.
#29 0x00007f1b4b70a61a in do_bind ()
No symbol table info available.
#30 0x00007f1b4b7113fd in connection_threadmain ()
No symbol table info available.
#31 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#32 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#33 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 25 (Thread 0x7f1b0c7f8700 (LWP 105185)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 24 (Thread 0x7f1b0cff9700 (LWP 105184)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 23 (Thread 0x7f1b0d7fa700 (LWP 105183)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 22 (Thread 0x7f1b0dffb700 (LWP 105182)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 21 (Thread 0x7f1b0e7fc700 (LWP 105181)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 20 (Thread 0x7f1b0effd700 (LWP 105180)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b433212f3 in __db_hybrid_mutex_suspend () from /lib64/
libdb-5.3.so
No symbol table info available.
#2 0x00007f1b43320b37 in __db_tas_mutex_readlock () from /lib64/
libdb-5.3.so
No symbol table info available.
#3 0x00007f1b4343ad35 in __memp_fget () from /lib64/libdb-5.3.so
No symbol table info available.
#4 0x00007f1b433e4333 in __dbc_iget () from /lib64/libdb-5.3.so
No symbol table info available.
#5 0x00007f1b433f2b02 in __dbc_get_pp () from /lib64/libdb-5.3.so
No symbol table info available.
#6 0x00007f1b3e8ce822 in idl_new_fetch () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#7 0x00007f1b3e8dcb26 in index_read_ext_allids () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#8 0x00007f1b3e8c7284 in keys2idl () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#9 0x00007f1b3e8c79e3 in ava_candidates.isra.0 () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#10 0x00007f1b3e8c7fd2 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#11 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#12 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#13 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#14 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#15 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#16 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#17 0x00007f1b3e90380c in subtree_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#18 0x00007f1b3e904e7f in ldbm_back_search () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#19 0x00007f1b4b2321d6 in op_shared_search () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#20 0x00007f1b4b72333e in do_search ()
No symbol table info available.
#21 0x00007f1b4b7113c3 in connection_threadmain ()
No symbol table info available.
#22 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#23 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#24 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 19 (Thread 0x7f1b0f7fe700 (LWP 105179)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b433212f3 in __db_hybrid_mutex_suspend () from /lib64/
libdb-5.3.so
No symbol table info available.
#2 0x00007f1b43320640 in __db_tas_mutex_lock () from /lib64/libdb-5.3.so
No symbol table info available.
#3 0x00007f1b433cad3a in __lock_get_internal () from /lib64/libdb-5.3.so
No symbol table info available.
#4 0x00007f1b433cb820 in __lock_get () from /lib64/libdb-5.3.so
No symbol table info available.
#5 0x00007f1b433f7142 in __db_lget () from /lib64/libdb-5.3.so
No symbol table info available.
#6 0x00007f1b4333e605 in __bam_search () from /lib64/libdb-5.3.so
No symbol table info available.
#7 0x00007f1b43329256 in __bamc_search () from /lib64/libdb-5.3.so
No symbol table info available.
#8 0x00007f1b4332ad0f in __bamc_get () from /lib64/libdb-5.3.so
No symbol table info available.
#9 0x00007f1b433e3ca6 in __dbc_iget () from /lib64/libdb-5.3.so
No symbol table info available.
#10 0x00007f1b433f2b02 in __dbc_get_pp () from /lib64/libdb-5.3.so
No symbol table info available.
#11 0x00007f1b3e8ce680 in idl_new_fetch () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#12 0x00007f1b3e8dcb26 in index_read_ext_allids () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#13 0x00007f1b3e8c7284 in keys2idl () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#14 0x00007f1b3e8c79e3 in ava_candidates.isra.0 () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#15 0x00007f1b3e8c7fd2 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#16 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#17 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#18 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#19 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#20 0x00007f1b3e8c9096 in list_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#21 0x00007f1b3e8c7f40 in filter_candidates_ext () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#22 0x00007f1b3e90380c in subtree_candidates () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#23 0x00007f1b3e904e7f in ldbm_back_search () from
/usr/lib64/dirsrv/plugins/libback-ldbm.so
No symbol table info available.
#24 0x00007f1b4b2321d6 in op_shared_search () from
/usr/lib64/dirsrv/libslapd.so.0
No symbol table info available.
#25 0x00007f1b4b72333e in do_search ()
No symbol table info available.
#26 0x00007f1b4b7113c3 in connection_threadmain ()
No symbol table info available.
#27 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#28 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#29 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 18 (Thread 0x7f1b0ffff700 (LWP 105178)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 17 (Thread 0x7f1b14d28700 (LWP 105177)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 16 (Thread 0x7f1b15529700 (LWP 105176)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 15 (Thread 0x7f1b15d2a700 (LWP 105175)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 14 (Thread 0x7f1b1652b700 (LWP 105174)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
No symbol table info available.
#2 0x00007f1b4b70efee in connection_wait_for_new_work ()
No symbol table info available.
#3 0x00007f1b4b710719 in connection_threadmain ()
No symbol table info available.
#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
No symbol table info available.
#5 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
No symbol table info available.
Thread 13 (Thread 0x7f1b16d2c700 (LWP 105173)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
No symbol table info available.
#1 0x00007f1b433212f3 in __db_hybrid_mutex_suspend () from /lib64/
libdb-5.3.so
No symbol table info available.
#2 0x00007f1b43320640 in __db_tas_mutex_lock () from /lib64/libdb-5.3.so
No symbol table info available.
#3 0x00007f1b433cad3a in __lock_get_internal () from /lib64/libdb-5.3.so
No symbol table info available.
#4 0x00007f1b433cb820 in __lock_get () from /lib64/libdb-5.3.so
No symbol table info available.
#5 0x00007f1b433f7142 in __db_lget () from /lib64/libdb-5.3.so
No symbol table info available.
#6 0x00007f1b4333e605 in __bam_search () from /lib64/libdb-5.3.so
No symbol table info available.
#7 0x00007f1b43329256 in __bamc_search () from /lib64/libdb-5.3.so
No symbol table info available.
#8 0x00007f1b4332ad0f in __bamc_get () from /lib64/libdb-5.3.so
No symbol table info available.
#9 0x00007f1b433e3ca6 in __dbc_iget () from /lib64/libdb-5.3.so
No symbol table info available.
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#26 0x00007f1b4b7113c3 in connection_threadmain ()
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#27 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
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#28 0x00007f1b48dc1dc5 in start_thread () from /lib64/libpthread.so.0
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#29 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
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Thread 12 (Thread 0x7f1b1752d700 (LWP 105172)):
#0 0x00007f1b48dc56d5 in pthread_cond_wait@@GLIBC_2.3.2 () from
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#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
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#3 0x00007f1b4b710719 in connection_threadmain ()
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#4 0x00007f1b494207bb in _pt_root () from /lib64/libnspr4.so
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#6 0x00007f1b48aef28d in clone () from /lib64/libc.so.6
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Thread 11 (Thread 0x7f1b17d2e700 (LWP 105171)):
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Thread 10 (Thread 0x7f1b2509d700 (LWP 105168)):
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Thread 9 (Thread 0x7f1b2589e700 (LWP 105167)):
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#1 0x00007f1b4941ab07 in pt_TimedWait () from /lib64/libnspr4.so
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Thread 8 (Thread 0x7f1b2609f700 (LWP 105166)):
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#1 0x00007f1b4941b050 in PR_WaitCondVar () from /lib64/libnspr4.so
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Thread 7 (Thread 0x7f1b268a0700 (LWP 105165)):
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Thread 6 (Thread 0x7f1b270a1700 (LWP 105164)):
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Thanks,
Rakesh
On Mon, Sep 5, 2016 at 4:48 PM, thierry bordaz <tbordaz at redhat.com> wrote:
>
>
> On 09/05/2016 12:05 PM, Rakesh Rajasekharan wrote:
>
> Hi Thierry,
>
>
> I was getting the hang issue while running ipa-client-install
> simultaneously on few clients..
> However, today, I am not able to replicate that.
>
> I could not get a gdb . But i will try getting that the next time I face
> this issue.
>
> The CPU does not stay high.. it just momentarily touches a high value and
> then drops down to around 2-7%
>
> One question I have is , is it ok to set it nsslapd-threadnumber to a very
> high value .
> I have around 4000 clients and with nsslapd-maxthreadsperconn set to
> 5..So, can I set nsslapd-threadnumber to around 25000.
>
>
> Hello,
>
> I know some users running in production with several hunderds of threads
> (>600) and this without problem.
>
> I do not recall having suggested to increase that number and for what
> reason.
> Usually 30 workers is a good enough value. It can create bootleneck if for
> some reason each operation is very long to satisfy and exhaust the number
> of workers. You can monitor the work queue:
>
> ldapsearch -D "cn=directory manager" -w xxx -LLL -b "cn=monitor" -s base
> opsinitiated opscompleted
>
>
> If opscompleted-opsinitiated remains close to threadnumber, then yes it
> would be valuable to increase it.
>
> The computation #client * #async_op_per_client sound an overkill. Even if
> all clients send at the exact same time all their requests, it is very
> likely that some common resource (db page, log, allocator...) will
> serialize them. If you monitor a need to increase the work, you would for
> example set it to 50, then monitor, then set it to 100, then monitor...
> until you find a good enough value.
> Note the increasing the #thread, increases the memory footprint that will
> reduce the efficiency of file system cache and can increase the response
> time.
>
>
> best regards
> thierry
>
>
> Thanks
>
> On Mon, Sep 5, 2016 at 1:03 PM, thierry bordaz <tbordaz at redhat.com> wrote:
>
>>
>> Hi Rakesh,
>>
>> Were you able to get a pstack or full stack with gdb (
>> <http://www.port389.org/docs/389ds/FAQ/faq.html#debugging-crashes>
>> http://www.port389.org/docs/389ds/FAQ/faq.html#debugging-crashes) when
>> the server hangs ?
>>
>> If it happens with 500 threads as well as with 30, using 30 threads is a
>> better choice to debug this issue.
>> I will try to reproduce using 150 parallel 'ipa user-find p-testipa'
>> commands
>>
>> Something I am unsure is if the CPU consumption stays high (you mentioned
>> 340% CPU usage) as long as the hang happens or if after a suddent shot up
>> to 340% (that marks the beginning of the hang) it drops and stay hanging ?
>>
>> thanks
>> thierry
>>
>> On 09/04/2016 08:40 PM, Rakesh Rajasekharan wrote:
>>
>> starce on the slapd process actually had this in the output..
>> FUTEX_WAIT_PRIVATE
>>
>> and checking for the number of threads slapd had.. there were 5015 threads
>>
>> ps -efL|grep slapd|wc -l
>> 5015
>>
>> strace on most of the threads gave this output
>>
>> strace -p 67411
>> Process 67411 attached
>> futex(0x7f3f0226b41c, FUTEX_WAIT_PRIVATE, 1, NULL) = -1 EAGAIN (Resource
>> temporarily unavailable)
>> futex(0x7f3f0226b41c, FUTEX_WAIT_PRIVATE, 2, NULL^CProcess 67411 detached
>>
>>
>>
>>
>>
>> On Sun, Sep 4, 2016 at 5:34 PM, Rakesh Rajasekharan <
>> <rakesh.rajasekharan at gmail.com>rakesh.rajasekharan at gmail.com> wrote:
>>
>>> I have again got the issue of IPA hanging.. The issue came up when i
>>> tried to run ipa-client-isntall on 142 clients simultaneously
>>>
>>>
>>> None of the IPA commands are responding, and I see this error
>>>
>>> ipa user-find p-testipa
>>> ipa: ERROR: Insufficient access: SASL(-1): generic failure: GSSAPI
>>> Error: Unspecified GSS failure. Minor code may provide more information
>>> (KDC returned error string: PROCESS_TGS)
>>>
>>> KRB5_TRACE=/dev/stdout kinit admin
>>> [41178] 1472984115.233214: Getting initial credentials for
>>> <admin at XYZ.COM>admin at XYZ.COM
>>> [41178] 1472984115.235257: Sending request (167 bytes) to XYZ.COM
>>> [41178] 1472984115.235419: Initiating TCP connection to stream
>>> 10.1.3.36:88
>>> [41178] 1472984115.235685: Sending TCP request to stream 10.1.3.36:88
>>> [41178] 1472984120.238914: Received answer (174 bytes) from stream
>>> 10.1.3.36:88
>>> [41178] 1472984120.238925: Terminating TCP connection to stream
>>> 10.1.3.36:88
>>> [41178] 1472984120.238993: Response was from master KDC
>>> [41
>>>
>>>
>>> Running an ldapsearch to see the db.. does not give any results and just
>>> hangs there
>>>
>>> ldapsearch -x -D 'cn=Directory Manager' -W -s one -b
>>> 'cn=kerberos,dc=xyz,dc=com'
>>> Enter LDAP Password:
>>>
>>> even an ldapsearch -x does not respond
>>> At this point, am sure that slapd is the one causing issues
>>>
>>> Running an strace against the hung slapd itself seems to get stuck does
>>> not proceed after saying "attaching to process"
>>>
>>> From some others posts I read Thierry suggesting to increase the
>>> nsslapd-threadnumber value
>>>
>>> It was set to 30, I think that might be too low.
>>>
>>> I have raised it to 500
>>>
>>> Now after restarting the service .. ldapsearch starts responding.
>>> But running the test to add a sudden high number of clients again left
>>> ns-slapd to hung state
>>>
>>> When i attempted adding the clients.. the ns-slapd cpu usage shot up to
>>> 340% and after that ns-slapd stopped responding
>>>
>>> So now, atleast I know what might be causing the issue and I can now
>>> easily reproduce it.
>>>
>>> Is there a way I can make ns-slapd handle a sudden bump in incoming
>>> request for ipa-client-install
>>>
>>> Thanks
>>> Rakesh
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Mon, Aug 29, 2016 at 11:18 PM, Rich Megginson < <rmeggins at redhat.com>
>>> rmeggins at redhat.com> wrote:
>>>
>>>> On 08/29/2016 10:53 AM, Rakesh Rajasekharan wrote:
>>>>
>>>> Hi Thierry,
>>>>
>>>> My machine has 30GB RAM ..and 389-ds version is 1.3.4
>>>>
>>>> ldapsearch shows the values for nsslapd-cachememsize updated to 200MB.
>>>>
>>>> ldapsearch -LLL -o ldif-wrap=no -D "cn=directory manager" -w
>>>> 'mypassword' -b 'cn=userRoot,cn=ldbm database,cn=plugins,cn=config'|grep
>>>> nsslapd-cachememsize
>>>> nsslapd-cachememsize: 209715200
>>>>
>>>>
>>>> So, it seems to have updated though seeing that warning(WARNING: ipaca:
>>>> entry cache size 10485760B is less than db size 11599872B) in the log
>>>> confuses me a bit.
>>>>
>>>> Thers one more entry that I found from the ldapsearch to be bit low
>>>>
>>>> nsslapd-dncachememsize: 10485760
>>>> maxdncachesize: 10485760
>>>>
>>>> Should I update these as well to a higher value
>>>>
>>>> At the time when the issue happened, the memory usage as well as the
>>>> overall load of the system was very low .
>>>> I will try reproducing the issue atleast in my QA env..probably by
>>>> trying to mock simultaneous parallel logins to a large number of hosts
>>>>
>>>>
>>>> To monitor your cache sizes, please use the dbmon.sh tool provided with
>>>> your distro. If that is not available with your particular distro, see
>>>> https://github.com/richm/scripts/wiki/dbmon.sh
>>>>
>>>>
>>>>
>>>>
>>>> thanks
>>>> Rakesh
>>>>
>>>>
>>>>
>>>>
>>>> On Mon, Aug 29, 2016 at 8:16 PM, thierry bordaz < <tbordaz at redhat.com>
>>>> tbordaz at redhat.com> wrote:
>>>>
>>>>> Hi Rakesh,
>>>>>
>>>>> Those tuning may depend on the memory available on your machine.
>>>>> nsslapd-cachememsize allows the entry cache to consume up to 200Mb but
>>>>> its memory footprint is known to go above.
>>>>> 200Mb both looks pretty good to me. How large is your machine ? What
>>>>> is your version of 389-ds ?
>>>>>
>>>>> Those warnings do not change your settings. It just raise that entry
>>>>> cache of 'ipaca' and 'retrocl' are small but it is fine. The size of the
>>>>> entry cache is important mostly in userRoot.
>>>>> You may double check the actual values, after restart, with ldapsearch
>>>>> on 'cn=userRoot,cn=ldbm database,cn=plugins,cn=config' and
>>>>> 'cn=config,cn=ldbm database,cn=plugins,cn=config'.
>>>>>
>>>>> A step is to know what will be response time of DS to know if it is
>>>>> responsible of the hang or not.
>>>>> The logs and possibly pstack during those intermittent hangs will help
>>>>> to determine that.
>>>>>
>>>>> regards
>>>>> thierry
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On 08/29/2016 04:25 PM, Rakesh Rajasekharan wrote:
>>>>>
>>>>> I tried increasing the nsslapd-dbcachesize and nsslapd-cachememsize in
>>>>> my QA envs to 200MB.
>>>>>
>>>>> However, in my log files, I still see this message
>>>>> [29/Aug/2016:04:34:37 +0000] - WARNING: ipaca: entry cache size
>>>>> 10485760B is less than db size 11599872B; We recommend to increase the
>>>>> entry cache size nsslapd-cachememsize.
>>>>> [29/Aug/2016:04:34:37 +0000] - WARNING: changelog: entry cache size
>>>>> 2097152B is less than db size 441647104B; We recommend to increase the
>>>>> entry cache size nsslapd-cachememsize.
>>>>>
>>>>> these are my ldif files that i used to modify the values
>>>>> modify entry cache size
>>>>> cat modify-cache-mem-size.ldif
>>>>> dn: cn=userRoot,cn=ldbm database,cn=plugins,cn=config
>>>>> changetype: modify
>>>>> replace: nsslapd-cachememsize
>>>>> nsslapd-cachememsize: 209715200
>>>>>
>>>>> modify db cache size
>>>>> cat modfy-db-cache-size.ldif
>>>>> dn: cn=config,cn=ldbm database,cn=plugins,cn=config
>>>>> changetype: modify
>>>>> replace: nsslapd-dbcachesize
>>>>> nsslapd-dbcachesize: 209715200
>>>>>
>>>>> After modifying , i restarted IPA services
>>>>>
>>>>> Is there anything else that I need to take care of as the logs
>>>>> suggest its still not getting the updated values
>>>>>
>>>>> Thanks
>>>>> Rakesh
>>>>>
>>>>> On Mon, Aug 29, 2016 at 6:07 PM, Rakesh Rajasekharan <
>>>>> <rakesh.rajasekharan at gmail.com>rakesh.rajasekharan at gmail.com> wrote:
>>>>>
>>>>>> Hi Thierry,
>>>>>>
>>>>>> Coz of the issues we had to revert back to earlier running openldap
>>>>>> in production.
>>>>>>
>>>>>> I have now done a few TCP related changes in sysctl.conf and have
>>>>>> also increased the nsslapd-dbcachesize and nsslapd-cachememsize to 200MB
>>>>>>
>>>>>> I will again start migrating hosts back to IPA and see if I face the
>>>>>> earlier issue.
>>>>>>
>>>>>> I will update back once I have something
>>>>>>
>>>>>>
>>>>>> Thanks,
>>>>>> Rakesh
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Thu, Aug 25, 2016 at 2:17 PM, thierry bordaz <
>>>>>> <tbordaz at redhat.com>tbordaz at redhat.com> wrote:
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 08/25/2016 10:15 AM, Rakesh Rajasekharan wrote:
>>>>>>>
>>>>>>> All of the troubleshooting seems fine.
>>>>>>>
>>>>>>>
>>>>>>> However, Running libconv.pl gives me this output
>>>>>>>
>>>>>>> ----- Recommendations -----
>>>>>>>
>>>>>>> 1. You have unindexed components, this can be caused from a search
>>>>>>> on an unindexed attribute, or your returned results exceeded the
>>>>>>> allidsthreshold. Unindexed components are not recommended. To refuse
>>>>>>> unindexed searches, switch 'nsslapd-require-index' to 'on' under your
>>>>>>> database entry (e.g. cn=UserRoot,cn=ldbm database,cn=plugins,cn=config)
>>>>>>> .
>>>>>>>
>>>>>>> 2. You have a significant difference between binds and unbinds.
>>>>>>> You may want to investigate this difference.
>>>>>>>
>>>>>>>
>>>>>>> I feel, this could be a pointer to things going slow.. and IPA
>>>>>>> hanging. I think i now have something that I can try and nail down this
>>>>>>> issue.
>>>>>>>
>>>>>>> On a sidenote, I was earlier running openldap and migrated over to
>>>>>>> Freeipa,
>>>>>>>
>>>>>>> Thanks
>>>>>>> Rakesh
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Wed, Aug 24, 2016 at 12:38 PM, Petr Spacek < <pspacek at redhat.com>
>>>>>>> pspacek at redhat.com> wrote:
>>>>>>>
>>>>>>>> On 23.8.2016 18:44, Rakesh Rajasekharan wrote:
>>>>>>>> > I think thers something seriously wrong with my system
>>>>>>>> >
>>>>>>>> > not able to run any IPA commands
>>>>>>>> >
>>>>>>>> > klist
>>>>>>>> > Ticket cache: KEYRING:persistent:0:0
>>>>>>>> > Default principal: <admin at XYZ.COM>admin at XYZ.COM
>>>>>>>> >
>>>>>>>> > Valid starting Expires Service principal
>>>>>>>> > 2016-08-23T16:26:36 2016-08-24T16:26:22 krbtgt/
>>>>>>>> <XYZ.COM at XYZ.COM>XYZ.COM at XYZ.COM
>>>>>>>> >
>>>>>>>> >
>>>>>>>> > [root at prod-ipa-master-1a :~] ipactl status
>>>>>>>> > Directory Service: RUNNING
>>>>>>>> > krb5kdc Service: RUNNING
>>>>>>>> > kadmin Service: RUNNING
>>>>>>>> > ipa_memcached Service: RUNNING
>>>>>>>> > httpd Service: RUNNING
>>>>>>>> > pki-tomcatd Service: RUNNING
>>>>>>>> > ipa-otpd Service: RUNNING
>>>>>>>> > ipa: INFO: The ipactl command was successful
>>>>>>>> >
>>>>>>>> >
>>>>>>>> >
>>>>>>>> > [root at prod-ipa-master :~] ipa user-find p-testuser
>>>>>>>> > ipa: ERROR: Kerberos error: ('Unspecified GSS failure. Minor
>>>>>>>> code may
>>>>>>>> > provide more information', 851968)/("Cannot contact any KDC for
>>>>>>>> realm '
>>>>>>>> > XYZ.COM'", -1765328228)
>>>>>>>>
>>>>>>>
>>>>>>> Hi Rakesh,
>>>>>>>
>>>>>>> Having a reproducible test case would you rerun the command above.
>>>>>>> During its processing you may monitor DS process load (top). If it
>>>>>>> is high, you may get some pstacks of it.
>>>>>>> Also would you attach the part of DS access logs taken during the
>>>>>>> command.
>>>>>>>
>>>>>>> regards
>>>>>>> thierry
>>>>>>>
>>>>>>> >
>>>>>>>>
>>>>>>>> This is weird because the server seems to be up.
>>>>>>>>
>>>>>>>> Please follow
>>>>>>>> <http://www.freeipa.org/page/Tr>http://www.freeipa.org/page/Tr
>>>>>>>> oubleshooting#Authentication.2FKerberos
>>>>>>>>
>>>>>>>> Petr^2 Spacek
>>>>>>>>
>>>>>>>> >
>>>>>>>> >
>>>>>>>> > Thanks
>>>>>>>> >
>>>>>>>> > Rakesh
>>>>>>>> >
>>>>>>>> > On Tue, Aug 23, 2016 at 10:01 PM, Rakesh Rajasekharan <
>>>>>>>> > <rakesh.rajasekharan at gmail.com>rakesh.rajasekharan at gmail.com>
>>>>>>>> wrote:
>>>>>>>> >
>>>>>>>> >> i changed the loggin level to 4 . Modifying
>>>>>>>> nsslapd-accesslog-level
>>>>>>>> >>
>>>>>>>> >> But, the hang is still there. though I dont see the sigfault now
>>>>>>>> >>
>>>>>>>> >>
>>>>>>>> >>
>>>>>>>> >>
>>>>>>>> >> On Tue, Aug 23, 2016 at 9:02 PM, Rakesh Rajasekharan <
>>>>>>>> >> <rakesh.rajasekharan at gmail.com>rakesh.rajasekharan at gmail.com>
>>>>>>>> wrote:
>>>>>>>> >>
>>>>>>>> >>> My disk was getting filled too fast
>>>>>>>> >>>
>>>>>>>> >>> logs under /var/log/dirsrv was coming around 5 gb quickly
>>>>>>>> filling up
>>>>>>>> >>>
>>>>>>>> >>> Is there a way to make the logging less verbose
>>>>>>>> >>>
>>>>>>>> >>>
>>>>>>>> >>>
>>>>>>>> >>> On Tue, Aug 23, 2016 at 6:41 PM, Petr Spacek <
>>>>>>>> <pspacek at redhat.com>pspacek at redhat.com> wrote:
>>>>>>>> >>>
>>>>>>>> >>>> On 23.8.2016 15:07, Rakesh Rajasekharan wrote:
>>>>>>>> >>>>> I was able to fix that may be temporarily... when i checked
>>>>>>>> the
>>>>>>>> >>>> network..
>>>>>>>> >>>>> there was another process that was running and consuming a
>>>>>>>> lot of
>>>>>>>> >>>> network (
>>>>>>>> >>>>> i have no idea who did that. I need to seriously start
>>>>>>>> restricting
>>>>>>>> >>>> people
>>>>>>>> >>>>> access to this machine )
>>>>>>>> >>>>>
>>>>>>>> >>>>> after killing that perfomance improved drastically
>>>>>>>> >>>>>
>>>>>>>> >>>>> But now, suddenly I started experiencing the same hang.
>>>>>>>> >>>>>
>>>>>>>> >>>>> This time , I gert the following error when checked dmesg
>>>>>>>> >>>>>
>>>>>>>> >>>>> [ 301.236976] ns-slapd[3124]: segfault at 0 ip
>>>>>>>> 00007f1de416951c sp
>>>>>>>> >>>>> 00007f1dee1dba70 error 4 in libcos-plugin.so[7f1de4166000+
>>>>>>>> b000]
>>>>>>>> >>>>> [ 1116.248431] TCP: request_sock_TCP: Possible SYN flooding
>>>>>>>> on port 88.
>>>>>>>> >>>>> Sending cookies. Check SNMP counters.
>>>>>>>> >>>>> [11831.397037] ns-slapd[22550]: segfault at 0 ip
>>>>>>>> 00007f533d82251c sp
>>>>>>>> >>>>> 00007f5347894a70 error 4 in libcos-plugin.so[7f533d81f000+
>>>>>>>> b000]
>>>>>>>> >>>>> [11832.727989] ns-slapd[22606]: segfault at 0 ip
>>>>>>>> 00007f6231eb951c sp
>>>>>>>> >>>>> 00007f623bf2ba70 error 4 in libcos-plugin.so[7f6231eb6000+b00
>>>>>>>> >>>>
>>>>>>>> >>>> Okay, this one is serious. The LDAP server crashed.
>>>>>>>> >>>>
>>>>>>>> >>>> 1. Make sure all your packages are up-to-date.
>>>>>>>> >>>>
>>>>>>>> >>>> Please see
>>>>>>>> >>>> <http://directory.fedoraproject>http://directory.fedoraproject
>>>>>>>> .org/docs/389ds/FAQ/faq.html#d
>>>>>>>> >>>> ebugging-crashes
>>>>>>>> >>>> for further instructions how to debug this.
>>>>>>>> >>>>
>>>>>>>> >>>> Petr^2 Spacek
>>>>>>>> >>>>
>>>>>>>> >>>>>
>>>>>>>> >>>>> and in /var/log/dirsrv/example-com/errors
>>>>>>>> >>>>>
>>>>>>>> >>>>> [23/Aug/2016:12:49:36 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3291138 (rc: 32)
>>>>>>>> >>>>> [23/Aug/2016:12:49:36 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3291139 (rc: 32)
>>>>>>>> >>>>> [23/Aug/2016:12:49:36 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3291140 (rc: 32)
>>>>>>>> >>>>> [23/Aug/2016:12:49:36 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3291141 (rc: 32)
>>>>>>>> >>>>> [23/Aug/2016:12:49:36 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3291142 (rc: 32)
>>>>>>>> >>>>> [23/Aug/2016:12:49:36 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3291143 (rc: 32)
>>>>>>>> >>>>> [23/Aug/2016:12:49:36 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3291144 (rc: 32)
>>>>>>>> >>>>> [23/Aug/2016:12:49:36 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3291145 (rc: 32)
>>>>>>>> >>>>> [23/Aug/2016:12:49:50 +0000] - Retry count exceeded in delete
>>>>>>>> >>>>> [23/Aug/2016:12:49:50 +0000] DSRetroclPlugin -
>>>>>>>> delete_changerecord:
>>>>>>>> >>>> could
>>>>>>>> >>>>> not delete change record 3292734 (rc: 51)
>>>>>>>> >>>>>
>>>>>>>> >>>>>
>>>>>>>> >>>>> Can i do something about this error.. I treid to restart ipa
>>>>>>>> a couple
>>>>>>>> >>>> of
>>>>>>>> >>>>> time but that did not help
>>>>>>>> >>>>>
>>>>>>>> >>>>> Thanks
>>>>>>>> >>>>> Rakesh
>>>>>>>> >>>>>
>>>>>>>> >>>>> On Mon, Aug 22, 2016 at 2:27 PM, Petr Spacek <
>>>>>>>> <pspacek at redhat.com>pspacek at redhat.com>
>>>>>>>> >>>> wrote:
>>>>>>>> >>>>>
>>>>>>>> >>>>>> On 19.8.2016 19:32, Rakesh Rajasekharan wrote:
>>>>>>>> >>>>>>> I am running my set up on AWS cloud, and entropy is low at
>>>>>>>> around
>>>>>>>> >>>> 180 .
>>>>>>>> >>>>>>>
>>>>>>>> >>>>>>> I plan to increase it bu installing haveged . But, would
>>>>>>>> low entropy
>>>>>>>> >>>> by
>>>>>>>> >>>>>> any
>>>>>>>> >>>>>>> chance cause this issue of intermittent hang .
>>>>>>>> >>>>>>> Also, the hang is mostly observed when registering around
>>>>>>>> 20 clients
>>>>>>>> >>>>>>> together
>>>>>>>> >>>>>>
>>>>>>>> >>>>>> Possibly, I'm not sure. If you want to dig into this, I
>>>>>>>> would do this:
>>>>>>>> >>>>>> 1. look what process hangs on client (using pstree command
>>>>>>>> or so)
>>>>>>>> >>>>>> $ pstree
>>>>>>>> >>>>>>
>>>>>>>> >>>>>> 2. look to what server and port is the hanging client
>>>>>>>> connected to
>>>>>>>> >>>>>> $ lsof -p <PID of the hanging process>
>>>>>>>> >>>>>>
>>>>>>>> >>>>>> 3. jump to server and see what process is bound to the
>>>>>>>> target port
>>>>>>>> >>>>>> $ netstat -pn
>>>>>>>> >>>>>>
>>>>>>>> >>>>>> 4. see where the process if hanging
>>>>>>>> >>>>>> $ strace -p <PID of the hanging process>
>>>>>>>> >>>>>>
>>>>>>>> >>>>>> I hope it helps.
>>>>>>>> >>>>>>
>>>>>>>> >>>>>> Petr^2 Spacek
>>>>>>>> >>>>>>
>>>>>>>> >>>>>>> On Fri, Aug 19, 2016 at 7:24 PM, Rakesh Rajasekharan <
>>>>>>>> >>>>>>> <rakesh.rajasekharan at gmail.com>
>>>>>>>> rakesh.rajasekharan at gmail.com> wrote:
>>>>>>>> >>>>>>>
>>>>>>>> >>>>>>>> yes there seems to be something thats worrying.. I have
>>>>>>>> faced this
>>>>>>>> >>>> today
>>>>>>>> >>>>>>>> as well.
>>>>>>>> >>>>>>>> There are few hosts around 280 odd left and when i try
>>>>>>>> adding them
>>>>>>>> >>>> to
>>>>>>>> >>>>>> IPA
>>>>>>>> >>>>>>>> , the slowness begins..
>>>>>>>> >>>>>>>>
>>>>>>>> >>>>>>>> all the ipa commands like ipa user-find.. etc becomes very
>>>>>>>> slow in
>>>>>>>> >>>>>>>> responding.
>>>>>>>> >>>>>>>>
>>>>>>>> >>>>>>>> the SYNC_RECV are not many though just around 80-90 and
>>>>>>>> today that
>>>>>>>> >>>> was
>>>>>>>> >>>>>>>> around 20 only
>>>>>>>> >>>>>>>>
>>>>>>>> >>>>>>>>
>>>>>>>> >>>>>>>> I have for now increased tcp_max_syn_backlog to 5000.
>>>>>>>> >>>>>>>> For now the slowness seems to have gone.. but I will do a
>>>>>>>> try
>>>>>>>> >>>> adding the
>>>>>>>> >>>>>>>> clients again tomorrow and see how it goes
>>>>>>>> >>>>>>>>
>>>>>>>> >>>>>>>> Thanks
>>>>>>>> >>>>>>>> Rakesh
>>>>>>>> >>>>>>>>
>>>>>>>> >>>>>>>> The issues
>>>>>>>> >>>>>>>>
>>>>>>>> >>>>>>>> On Fri, Aug 19, 2016 at 12:58 PM, Petr Spacek <
>>>>>>>> <pspacek at redhat.com>pspacek at redhat.com>
>>>>>>>> >>>>>> wrote:
>>>>>>>> >>>>>>>>
>>>>>>>> >>>>>>>>> On 18.8.2016 17:23, Rakesh Rajasekharan wrote:
>>>>>>>> >>>>>>>>>> Hi
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> I am migrating to freeipa from openldap and have around
>>>>>>>> 4000
>>>>>>>> >>>> clients
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> I had openned a another thread on that, but chose to
>>>>>>>> start a new
>>>>>>>> >>>> one
>>>>>>>> >>>>>>>>> here
>>>>>>>> >>>>>>>>>> as its a separate issue
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> I was able to change the nssslapd-maxdescriptors adding
>>>>>>>> an ldif
>>>>>>>> >>>> file
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> cat nsslapd-modify.ldif
>>>>>>>> >>>>>>>>>> dn: cn=config
>>>>>>>> >>>>>>>>>> changetype: modify
>>>>>>>> >>>>>>>>>> replace: nsslapd-maxdescriptors
>>>>>>>> >>>>>>>>>> nsslapd-maxdescriptors: 17000
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> and running the ldapmodify command
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> I have now started moving clients running an openldap to
>>>>>>>> Freeipa
>>>>>>>> >>>> and
>>>>>>>> >>>>>>>>> have
>>>>>>>> >>>>>>>>>> today moved close to 2000 clients
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> However, I have noticed that IPA hangs intermittently.
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> running a kinit admin returns the below error
>>>>>>>> >>>>>>>>>> kinit: Generic error (see e-text) while getting initial
>>>>>>>> >>>> credentials
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> from the /var/log/messages, I see this entry
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> prod-ipa-master-int kernel: [104090.315801] TCP:
>>>>>>>> >>>> request_sock_TCP:
>>>>>>>> >>>>>>>>>> Possible SYN flooding on port 88. Sending cookies.
>>>>>>>> Check SNMP
>>>>>>>> >>>>>> counters.
>>>>>>>> >>>>>>>>>
>>>>>>>> >>>>>>>>> I would be worried about this message. Maybe
>>>>>>>> kernel/firewall is
>>>>>>>> >>>> doing
>>>>>>>> >>>>>>>>> something fishy behind your back and blocking some
>>>>>>>> connections or
>>>>>>>> >>>> so.
>>>>>>>> >>>>>>>>>
>>>>>>>> >>>>>>>>> Petr^2 Spacek
>>>>>>>> >>>>>>>>>
>>>>>>>> >>>>>>>>>
>>>>>>>> >>>>>>>>>> Aug 18 13:00:01 prod-ipa-master-int systemd[1]: Started
>>>>>>>> Session
>>>>>>>> >>>> 4885
>>>>>>>> >>>>>> of
>>>>>>>> >>>>>>>>>> user root.
>>>>>>>> >>>>>>>>>> Aug 18 13:00:01 prod-ipa-master-int systemd[1]: Starting
>>>>>>>> Session
>>>>>>>> >>>> 4885
>>>>>>>> >>>>>> of
>>>>>>>> >>>>>>>>>> user root.
>>>>>>>> >>>>>>>>>> Aug 18 13:01:01 prod-ipa-master-int systemd[1]: Started
>>>>>>>> Session
>>>>>>>> >>>> 4886
>>>>>>>> >>>>>> of
>>>>>>>> >>>>>>>>>> user root.
>>>>>>>> >>>>>>>>>> Aug 18 13:01:01 prod-ipa-master-int systemd[1]: Starting
>>>>>>>> Session
>>>>>>>> >>>> 4886
>>>>>>>> >>>>>> of
>>>>>>>> >>>>>>>>>> user root.
>>>>>>>> >>>>>>>>>> Aug 18 13:02:40 prod-ipa-master-int python[28984]:
>>>>>>>> ansible-command
>>>>>>>> >>>>>>>>> Invoked
>>>>>>>> >>>>>>>>>> with creates=None executable=None shell=True args=
>>>>>>>> removes=None
>>>>>>>> >>>>>>>>> warn=True
>>>>>>>> >>>>>>>>>> chdir=None
>>>>>>>> >>>>>>>>>> Aug 18 13:04:37 prod-ipa-master-int sssd_be: GSSAPI
>>>>>>>> Error:
>>>>>>>> >>>> Unspecified
>>>>>>>> >>>>>>>>> GSS
>>>>>>>> >>>>>>>>>> failure. Minor code may provide more information (KDC
>>>>>>>> returned
>>>>>>>> >>>> error
>>>>>>>> >>>>>>>>>> string: PROCESS_TGS)
>>>>>>>> >>>>>>>>>>
>>>>>>>> >>>>>>>>>> Could it be possible that its due to the initial load of
>>>>>>>> adding
>>>>>>>> >>>> the
>>>>>>>> >>>>>>>>> clients
>>>>>>>> >>>>>>>>>> or is there something else that I need to take care of.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Manage your subscription for the Freeipa-users mailing list:
>>>> https://www.redhat.com/mailman/listinfo/freeipa-users
>>>> Go to http://freeipa.org for more info on the project
>>>>
>>>
>>>
>>
>>
>>
>>
>
>
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