topic Re: high fault count in Operating System - HP-UX

high fault count

Lee_110 — Tue, 24 May 2005 13:17:01 GMT

Hi,

I am attaching a txt file that has vmstat details. Could you please tell if there is anything unusual or concerning here. I see high fault numbers. Thanks in advance.

Re: high fault count

Devender Khatana — Tue, 24 May 2005 13:25:40 GMT

Hi,

From the attachement, your system is fully idle. 99-100% Free( No Load) Do you have any problems ? If yes it will be better you take this and a few more outputs at peak usage time.

HTH,
Devender

Re: high fault count

A. Clay Stephenson — Tue, 24 May 2005 13:41:25 GMT

I see nothing out of the ordinary. I think your concern stems froms translating the UNIX word "fault" to the English word "problem" --- when the two really aren't related. Your number of device n'rupts, system calls/second, and context switches/seconds is very modest. Note that context switches ( a very normal UNIX thing) is considered a "fault" though it is certainly not a problem. The same thing can be said of the other two columns under faults in vmstat. The ONLY column in vmstat that I pay any real attention to is "po" -- pageouts --- and yours is zero indicating no memory pressure.

By the way, you need to get into the habit of gathering metrics while the system is "normal" so that you have something to compare when it's not.