topic Informations about vmstat in Operating System - HP-UX

Informations about vmstat

StefanoIntroini — Mon, 08 May 2006 02:56:00 GMT

Hi,
i'm using vmstat in order to get some information about performance on our servers, every thing works fine, but sometimes i can see strange values (from my stats taken every 10 seconds):

6 0 0 71036 101719 0 0 0 0 85 0 0 3986 51542 6829 41 17 42
1387 0 0 558254 103742 0 0 2 1 109 0 0 4128 53032 6421 33 19 47
3 0 0 58641 104662 0 0 1 0 84 0 0 3511 51533 6290 29 17 53

it seems that there are 1387 processes in the run queue of the cpu, it looks very strange because, i normaly have about 300 processes (with ps) and our system does not create such uge number of processes in a such small time.

What do you think ?? is there any bug on vmstat (HP 11.00, i'm going to migrate to 11.11), or maybe it is correct ??.

Re: Informations about vmstat

Jannik — Mon, 08 May 2006 03:06:29 GMT

What is your patch level?
Try to install this patch: PHCO_27578

If it doesn't fix the problem report it to HP.

Re: Informations about vmstat

Jannik — Mon, 08 May 2006 03:10:03 GMT

another patch could be:

PHKL_31932

The following list of commands use psd_proc_cnt incorrectly: sadc, vmstat, iostat, top and uptime. If processors are deallocated after this patch is installed, these commands will display incorrect data in fields that are based on the psd_proc_cnt value (i.e. load average, active processors).