topic Re: CPU utilization in Operating System - HP-UX

CPU utilization

TMcB — Tue, 16 Oct 2001 14:22:36 GMT

Hi folks,

On one of my HPUX servers, glance plus is intsalled and gives me the avarage and high CPU utilization.

Can anyone advise me as to how can I find this out on all my other servers (none of which have glance plus)

Thanks for your help

Re: CPU utilization

A. Clay Stephenson — Tue, 16 Oct 2001 14:28:58 GMT

Hi Terry:

You can use the old UNIX standby's - sar and sadc.

sadc (System activity data collector) can be used to take snapshots on a fixed interval. This does not mean that you will capture peak just what ever the metric happens to be at that point in time.

Man sar and sadc for details.

Re: CPU utilization

A. Clay Stephenson — Tue, 16 Oct 2001 14:29:54 GMT

Hi again Terry:

Plan B - you can install the 30-day trial version of Glance on your other boxes from the Application CD's.

Re: CPU utilization

Uday_S_Ankolekar — Tue, 16 Oct 2001 14:31:42 GMT

Hi,

You can use sar command. sar -u 5 10

You can also use top cammand

man sar for details.

Goodluck..

-USA...

Re: CPU utilization

Carsten Krege — Tue, 16 Oct 2001 14:32:43 GMT

sar should do it for you. E.g.

# sar 5 5
measures 5 times the CPU utilization for 5 second each (good for average)

# sar 1 5
measures 5 times the CPU utilization for 1 second each (good for peak)

Alternatively you can use top(1m) or could install the trial license of Glance on your other unix boxes (expires after some weeks).

Carsten

Re: CPU utilization

Santosh Nair_1 — Tue, 16 Oct 2001 14:37:32 GMT

Top is a really nice utility or you can get yamm (one of my favorites) from the HP porting center:

http://hpux.cs.utah.edu/hppd/hpux/Sysadmin/yamm-2.6.0

-Santosh

Re: CPU utilization

Deshpande Prashant — Tue, 16 Oct 2001 14:41:07 GMT

Hi Terry
For online monitoring you can use
#sar -u 1 5 or #top

If possible install glance on rest systems from app. CD.
You can capture/store history using measureware software or using sadc (/usr/lbin/sa1 and /usr/lbin/sa2 commands) in cronjobs.

Thanks.
Prashant

Re: CPU utilization

TMcB — Wed, 17 Oct 2001 12:10:45 GMT

Hello again,

I have been able to find out what I need from using sar, but I would now like to be able to run this as a cron job and monitor the systems for 24hours.
I have tried the command /usr/lbin/sa/sa1 and get thef following message :
sadc: Can't create/open data file: No such file or directory

Also, for 24hour monitoring, what would be the best intervalsto add in the cron job

Thanks for your help.

Re: CPU utilization

A. Clay Stephenson — Wed, 17 Oct 2001 12:18:22 GMT

HI:

You simply need to create the directrory /var/adm/sa assuming that is where the sa1 script has defined the datafiles directory.

I typically use a 20 min sampling interval.

Re: CPU utilization

TMcB — Wed, 17 Oct 2001 12:33:15 GMT

Thanks - cron job is now running.
This has created a file /var/adm/sa/sa17,
which is a binary file.
How do I then get the information I want from this file

Again, thankyou.

Re: CPU utilization

Volker Borowski — Wed, 17 Oct 2001 12:35:41 GMT

Hi Terry,

if you want a surveiliance for several systems and may be even statistics later, you might consider to try

http://www.bb4.com

Several monitoring agents for this tool appear at http://www.deadcat.net

Hope this helps
Volker

Re: CPU utilization

Uday_S_Ankolekar — Wed, 17 Oct 2001 12:51:17 GMT

Hi,

You can also try sarcheck utility for a month free.
www.sarcheck.com for more details.
-USA..

Re: CPU utilization

A. Clay Stephenson — Wed, 17 Oct 2001 13:03:17 GMT

To now get the data from the sa* files, you simply do a sar, e.g. sar -u will display CPU utilization using today's statistics files. You can specify a -f option to choose another day's data.

Any options that sar supports with a number of samples/sampling period set of arguments will not work instrad on today's file by default.

Man sar for all the possible options.

Clay