On Fri, 2007-08-17 at 20:29 -0400, Mag Gam wrote:
> Thanks John.
>
> Yes, this is a tricky question, but I face this a
> lot....Unfortunately, I am not sure how to check the adapter
> throughput, and what process is causing the i/o wait.
>
>
> On 8/17/07, John R Pierce <pierce@xxxxxxxxxxxx> wrote:
> Mag Gam wrote:
> > Hello:
> >
> > I have a server with 2 HBAs, and the users keeps complaining
> about
> > performance problems. My question is, how can I relate the
> process
> > with high I/O wait? Also, is it possible to see how much
> data is being
> > pushed thru by my 2 HBAs?
>
> iostat (part of the sysstat package) will answer your 2nd
> question.
>
> I dunno how to measure io wait time per process. maybe IBM's
> NMON can
> do that, not sure, I haven't used it for a while.
> http://www-941.haw.ibm.com/collaboration/wiki/display/WikiPtype/nmon
> <snip sig stuff>
I *think* that sar (System Activity Reporting?) package is still
available? Haven't looked/used for a long time. If so, you should be
able to get what you want, and a lot more, by installing and activating
it.
HTH
--
Bill
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