Fedora 7 development - automount taking 100% CPU
Richard W.M. Jones
rjones at redhat.com
Thu Sep 20 22:13:43 UTC 2007
I've got a very strange one here. Fedora 7 with development repo, up to
date as of about 48 hours ago.
After boot, automount takes 100% of CPU, according to 'top'.
top - 23:41:18 up 9 min, 3 users, load average: 3.06, 2.73, 1.31
Tasks: 140 total, 1 running, 139 sleeping, 0 stopped, 0 zombie
Cpu(s): 24.3%us, 0.8%sy, 0.0%ni, 74.9%id, 0.0%wa, 0.0%hi, 0.0%si,
0.0%st
Mem: 8110068k total, 8027108k used, 82960k free, 44944k buffers
Swap: 0k total, 0k used, 0k free, 7523048k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2886 root 20 0 28564 1244 936 S 100 0.0 6:00.18 automount
Fair enough, but when I 'strace' automount, I just see:
# strace -p 2886
Process 2886 attached - interrupt to quit
rt_sigtimedwait(~[CHLD CONT RTMIN RT_1],
(and it just hangs there).
While 'strace' is hanging, automount is still (according to top at
least) consuming 100% CPU. I tried thinking about threads, but it seems
like automount is just a single thread from what I can tell.
Any ideas?
# uname -a
Linux amd 2.6.23-0.139.rc3.git10.fc8 #1 SMP Sun Aug 26 19:23:52 EDT 2007
x86_64 x86_64 x86_64 GNU/Linux
BTW, I'm using the previous kernel above, because the latest kernel
2.6.23-0.185.rc6.git7 seemed to be causing the machine to power-off
under load, which I guess might indicate a hardware problem although the
machine has not suffered hardware problems up til now. In any case
could hardware cause the strangeness above?
BTW#2, I stopped the autofs service and automount went away -- I never
use automount anyhow.
Rich.
--
Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in
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