sar and reboot

[Richeux Eric]

We notice that the CPU load reported by sar is wrong after a reboot on HP-UX 11.00 (near 200%).

The latest sar patch is applied (PHCO_25174).

Any idea will be welcome.

Thanx, Eric

[Ravi_8]

Hi,

glance plus is the better tool to monitor the performance ( available on application CD for 60 days trial)

[David_246]

Yep Ravi, but glance isn't sar.

I know top had about the same problem. After aplie-ing patch PHCO_26020 it got fixed.

I don't know if you already applied this patch ? It's a non-harming patch I believe, it's worth the try.

I have UX-11.00 as well running the same sar patch. We may be able to check our systems together on differences.

Regs David

[Helen French]

This problem can be solved by applying the latest patches. Installing this patch may solve your issue - PHKL_23901 (s700_800 11.00 remove stopped threads from load averages).

The patch description clearly describes the issue you are facing:

http://support2.itrc.hp.com/service/cki/patchDocDisplay.do?patchId=PHKL_23901

Since this is a kernel patch, a system reboot will be necessary. Read install instructions.

[Zeev Schultz]

One thing Eric,
Did your perform any hardware changes (cpu addons,system board replacements etc) on this
computer?Was sar's report earlier correct and
only now you've noticed wrong stats?

Also read this one:
/usr/share/doc/sar_converter.README
And last one - I'd actually do its first one:
swlist -l fileset -a state | grep inst.

Zeev

[Richeux Eric]

Hi,

first of all, thanks for your replies.

PHKL_23901 is already applied and is in a configured state.

PHCO_26020 has been applied without any result concerning my problem.


Sar is started with the crontab with following entry:
0,5,10,15,20,25,30,35,40,45,50,55 * * * * /usr/lib/sa/sa1

The output is the following:
7:55 0 0 1 99
8:05 208 104 104 100
8:10 0 0 1 99
when rebooted at 7:59



Eric