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Old 11-26-2008, 06:55 AM
"Rangi, Jai"
 
Default High System CPU Usage

In top, I only see java and mysql showing part of user CPU, I need to
know what application/process is using system cpu.

-Jai

-----Original Message-----
From: redhat-list-bounces@redhat.com
[mailto:redhat-list-bounces@redhat.com] On Behalf Of gopanapalli pradeep
Sent: Tuesday, November 25, 2008 10:19 PM
To: General Red Hat Linux discussion list
Subject: Re: High System CPU Usage

I think u can use top
which will show the processes running on each cpu




________________________________
From: "Rangi, Jai" <jrangi@automotive.com>
To: redhat-list@redhat.com
Sent: Wednesday, November 26, 2008 11:44:24 AM
Subject: High System CPU Usage

All,

I have a cluster of 7 servers (ns client) running hava application and 1
NFS server. Sometime In the top output system CPU is 55%.

Could some give me a clues what might be causing system CPU to be that
high.

Tried these

Ps -eo pid,user,%cpu,args -sort %cpu the top list was java process and
mysql using 39% and 4% max.

Checked the output from sar -c, sar -b and at the peak time



04:10:02 PM proc/s

04:20:01 PM 40.02

04:30:01 PM 34.65

04:40:02 PM 35.74

04:50:01 PM 36.13

05:00:01 PM 40.61

05:10:01 PM 38.42

05:20:01 PM 32.75



Sar -P all

04:20:01 PM CPU %user %nice %system %iowait %idle

04:30:01 PM all 22.70 0.00 64.87 1.83 10.61

04:30:01 PM 0 24.14 0.00 63.88 1.69 10.29

04:30:01 PM 1 21.25 0.00 65.86 1.97 10.92

04:40:02 PM all 22.21 0.00 66.27 1.51 10.01

04:40:02 PM 0 23.53 0.00 65.23 1.53 9.71

04:40:02 PM 1 20.89 0.00 67.30 1.50 10.31

04:50:01 PM all 22.55 0.00 66.49 1.45 9.52



I can see the high usage by System CPU, but I want to find out what
might be causing this high so High System CPU. Any lead would be
appreciated.



Jai

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Old 11-26-2008, 07:23 AM
"Maung Nanda Linn Aung"
 
Default High System CPU Usage

Maybe this one would help you.
http://www.cyberciti.biz/tips/how-do-i-find-out-linux-cpu-utilization.html



On Wed, Nov 26, 2008 at 2:55 PM, Rangi, Jai <jrangi@automotive.com> wrote:

> In top, I only see java and mysql showing part of user CPU, I need to
> know what application/process is using system cpu.
>
> -Jai
>
> -----Original Message-----
> From: redhat-list-bounces@redhat.com
> [mailto:redhat-list-bounces@redhat.com] On Behalf Of gopanapalli pradeep
> Sent: Tuesday, November 25, 2008 10:19 PM
> To: General Red Hat Linux discussion list
> Subject: Re: High System CPU Usage
>
> I think u can use top
> which will show the processes running on each cpu
>
>
>
>
> ________________________________
> From: "Rangi, Jai" <jrangi@automotive.com>
> To: redhat-list@redhat.com
> Sent: Wednesday, November 26, 2008 11:44:24 AM
> Subject: High System CPU Usage
>
> All,
>
> I have a cluster of 7 servers (ns client) running hava application and 1
> NFS server. Sometime In the top output system CPU is 55%.
>
> Could some give me a clues what might be causing system CPU to be that
> high.
>
> Tried these
>
> Ps -eo pid,user,%cpu,args -sort %cpu the top list was java process and
> mysql using 39% and 4% max.
>
> Checked the output from sar -c, sar -b and at the peak time
>
>
>
> 04:10:02 PM proc/s
>
> 04:20:01 PM 40.02
>
> 04:30:01 PM 34.65
>
> 04:40:02 PM 35.74
>
> 04:50:01 PM 36.13
>
> 05:00:01 PM 40.61
>
> 05:10:01 PM 38.42
>
> 05:20:01 PM 32.75
>
>
>
> Sar -P all
>
> 04:20:01 PM CPU %user %nice %system %iowait %idle
>
> 04:30:01 PM all 22.70 0.00 64.87 1.83 10.61
>
> 04:30:01 PM 0 24.14 0.00 63.88 1.69 10.29
>
> 04:30:01 PM 1 21.25 0.00 65.86 1.97 10.92
>
> 04:40:02 PM all 22.21 0.00 66.27 1.51 10.01
>
> 04:40:02 PM 0 23.53 0.00 65.23 1.53 9.71
>
> 04:40:02 PM 1 20.89 0.00 67.30 1.50 10.31
>
> 04:50:01 PM all 22.55 0.00 66.49 1.45 9.52
>
>
>
> I can see the high usage by System CPU, but I want to find out what
> might be causing this high so High System CPU. Any lead would be
> appreciated.
>
>
>
> Jai
>
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> redhat-list mailing list
> unsubscribe mailto:redhat-list-request@redhat.com?subject=unsubscribe
> https://www.redhat.com/mailman/listinfo/redhat-list
>
>
>
>
> --
> redhat-list mailing list
> unsubscribe mailto:redhat-list-request@redhat.com?subject=unsubscribe
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>
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>



--
Best Regards,

Nanda Linn Aung
http://infomm.com

My WHB web hosting
http://infomm.com/z-whb.php
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