topic structure syswait in Operating System - Linux

structure syswait

Vacquier — Mon, 26 May 2008 12:26:53 GMT

Hi,
I used structure syswait on precedent versions of HP-UX; with 11.31 version this structure has disappeared and is only referenced as extern in /usr/include/sys/sar.h. Does anyone know if this structure still exist, if a patch is necessary or if there is another way to get iowait.
Thanks in advance

Re: structure syswait

Steven E. Protter — Mon, 26 May 2008 12:31:56 GMT

Shalom,

This sar based script will provide i/o wait information.

http://www.hpux.ws/?p=6

SEP

Re: structure syswait

Vacquier — Mon, 26 May 2008 12:40:21 GMT

Thanks but I need to use C programming and no script or system call because of performance constraints.

Re: structure syswait

Dennis Handly — Tue, 27 May 2008 01:17:15 GMT

>I used structure syswait on precedent versions of HP-UX; with 11.31 version this structure has disappeared

If it disappeared it was removed as undocumented (with all of the 11.31 header cleanup) and you weren't suppose to use it.

>Does anyone know if this structure still exist or if there is another way to get iowait.

What are you trying to do? What does iowait mean?

>no ... system call because of performance constraints.

You were probably making a syscall.
You can use tusc to verify.