when the server is normal the top say
12:01:26 up 91 days, 20:07, 3 users, load average: 1.71, 1.23, 1.66
172 processes: 166 sleeping, 4 running, 2 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 57.0% 0.0% 5.6% 0.0% 0.0% 9.8% 127.2%
cpu00 24.1% 0.0% 3.3% 0.0% 0.0% 5.9% 66.4%
cpu01 32.8% 0.0% 2.3% 0.0% 0.0% 3.9% 60.7%
Mem: 1024780k av, 1007700k used, 17080k free, 0k shrd, 38324k
buff
755896k actv, 142816k in_d, 15620k in_c
Swap: 1999992k av, 324624k used, 1675368k free 604408k
cache
It can be a SCSI adapter issue ??
On 4/13/07, nilesh vaghela <nileshj.vaghela@xxxxxxxxx> wrote:
This happens sometimes lets say once in 3 days or may be some time once in
week.
Let me try to increase the ram.
[root@mailserver root]# free -m
total used free shared buffers cached
Mem: 1000 984 16 0 37 593
-/+ buffers/cache: 353 647
Swap: 1953 316 1636
On 4/13/07, Andrei Pascal <andrei@xxxxxxxxx> wrote:
>
> On Fri, 2007-04-13 at 01:15 -0400, nilesh vaghela wrote:
> > We have mail server running with sendmail, horde with front end and
> around
> > 350 users.
> >
> > Some time the server indicate very high cpu usage.
> >
> > What is to be ckeck
> >
> > We are using RHEL3.
> >
> >
> > 10:49:11 up 91 days, 18:55, 3 users, load average: 11.93, 15.27,
> 13.87
> > 259 processes: 254 sleeping, 4 running, 1 zombie, 0 stopped
> > CPU
> states: cpu user nice system irq softirq iowait idle
> > total 66.8% 0.0% 13.2% 0.4% 0.0% 118.8%
> 0.0%
> > cpu00 39.9% 0.0% 7.5% 0.5% 0.1% 51.6%
> 0.0%
> > cpu01 27.0% 0.0% 5.7% 0.0% 0.0% 67.1%
> 0.0%
> > Mem: 1024780k av, 1008968k used, 15812k free, 0k shrd,
> 13764k
> > buff
> > 749248k actv, 143504k in_d, 14280k in_c
> > Swap: 1999992k av, 437476k used, 1562516k
> free 558700k
> > cached
> > --------------
> > [root@mailserver root]# ps -el | grep imap | wc -l
> > 109
> > -----------------
>
> The "iowait" field in the CPU usage status means your processess are
> waiting for some data. Check you disk and network latency. 1 GB RAM
> should do it, but your swap is bieng hit quite hard. Check vmstat for si
>
> and so (swap in / swap out) - I think that's where youp problem is.
>
> Try stopping unnecessary services or simply add an extra GB of RAM to
> that machine.
>
>
> Regards,
> Andrei
>
>
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--
Nilesh Vaghela
ElectroMech
Redhat Channel Partner and Training Partner
74, Nalanda Complex, Satellite Rd, Ahmedabad
25, The Emperor, Fatehgunj, Baroda.
www.electromech.info
--
Nilesh Vaghela
ElectroMech
Redhat Channel Partner and Training Partner
74, Nalanda Complex, Satellite Rd, Ahmedabad
25, The Emperor, Fatehgunj, Baroda.
www.electromech.info
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