[CentOS] Correlate i/o with a process

On Fri, 17 Aug 2007, John R Pierce 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

nmon is packaged as part of RPMforge :)

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