Performance issue system swap partition.
Herta Van den Eynde
herta.vandeneynde at gmail.com
Mon Sep 3 08:47:45 UTC 2007
On 03/09/07, nilesh vaghela <nileshj.vaghela at gmail.com> wrote:
> We have RHEL 3 running groupware horde with around 400 users.
>
> output of the top is like
>
> 11:56:24 up 12 days, 14:29, 3 users, load average: 17.56, 13.86, 17.18
> 215 processes: 211 sleeping, 1 running, 3 zombie, 0 stopped
> CPU states: cpu user nice system irq softirq iowait idle
> total 133.8% 0.0% 15.6% 0.0% 0.0% 50.0% 0.0%
> cpu00 66.7% 0.0% 8.1% 0.0% 0.0% 25.0% 0.0%
> cpu01 67.1% 0.0% 7.5% 0.0% 0.1% 25.0% 0.0%
> Mem: 1024780k av, 1007952k used, 16828k free, 0k shrd, 16804k
> buff
> 752416k actv, 142348k in_d, 17892k in_c
> Swap: 1999992k av, 286856k used, 1713136k free 548700k
> cached
>
> PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM CTIME CPU COMMAND
> 27403 postgres 17 0 18932 18M 17512 S 36.8 1.8 0:01 0 postmaster
> 22027 apache 20 0 14064 13M 3948 S 9.9 1.3 0:06 1 httpd
> 9730 apache 16 0 15556 14M 4032 S 9.7 1.4 0:23 0 httpd
> 15890 apache 19 0 15504 14M 4016 S 6.3 1.4 0:18 1 httpd
> 7907 apache 18 0 15128 14M 4024 S 5.3 1.4 0:14 1 httpd
> 19281 apache 15 0 15324 14M 3984 S 2.9 1.4 0:12 1 httpd
> 8 root 15 0 0 0 0 SW 1.7 0.0 43:14 0 kscand
> 26073 apache 16 0 13784 12M 3912 S 1.7 1.2 0:01 1 httpd
> 26056 apache 16 0 14588 13M 3928 S 1.5 1.3 0:01 0 httpd
> 26152 amish.sh 15 0 1152 1112 1020 D 1.5 0.1 0:05 0 imap
> 19330 apache 15 0 15120 13M 3968 S 1.3 1.3 0:12 1 httpd
> 21861 apache 16 0 14568 13M 3952 S 1.3 1.3 0:05 1 httpd
> 22028 apache 15 0 14228 12M 3964 S 1.1 1.2 0:08 1 httpd
> 21860 apache 15 0 14436 13M 3964 S 0.9 1.3 0:06 0 httpd
>
> --------
>
> #free -m
> total used free shared buffers cached
> Mem: 1000 985 15 0 16 584
> -/+ buffers/cache: 384 616
> Swap: 1953 262 1691
> # iostat
> Linux 2.4.21-47.0.1.ELsmp (mailserver) 09/03/2007
>
> avg-cpu: %user %nice %sys %idle
> 8.62 0.00 1.67 89.72
>
> Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
> dev8-0 51.10 2174.61 528.74 2031403260 493924264
> dev8-1 20.50 1051.40 1106.51 982162050 1033642680
>
>
> Why it is consuming so high swap even the free memory is there ???
>
> The io wait consume almost all the cpu power. ??
>
>
> --
> Nilesh Vaghela
> ElectroMech
> Redhat Channel Partner and Training Partner
> 74, Nalanda Complex, Satellite Rd, Ahmedabad
> 25, The Emperor, Fatehgunj, Baroda.
> www.electromech.info
Could you post the output of 'cat /proc/meminfo', please?
Kind regards,
Herta
More information about the redhat-list
mailing list