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Re: definitions for /proc/fs/xfs/stat

To: Nathan Scott <nathans@xxxxxxxxxx>
Subject: Re: definitions for /proc/fs/xfs/stat
From: Mark Seger <mjseger@xxxxxxxxx>
Date: Fri, 14 Jun 2013 18:37:01 -0400
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
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actually I have since found a decoder ring here - http://xfs.org/index.php/Runtime_Stats and have been incorporating a lot of the data so I can look at things in real time.  I'd still love to know why writing 1000 1K files results in 200MB/sec of disk I/O though.  clearly something weird is going on. both PCP as well as collectl (now that I have incorporated some of the counters) are both telling me that I/O is in the logging, but why remains a mystery.  can anyone offer some suggestions as to why?

On Fri, Jun 14, 2013 at 6:16 PM, Nathan Scott <nathans@xxxxxxxxxx> wrote:
Hi Mark,

----- Original Message -----
> I've been thinking about adding xfs support to collectl but am having a hard
> time trying to decode he data in the stat file. can someone point me to a
> decoder ring? thanks.

Using Performance Co-Pilot, "pminfo -T xfs" will give you the answers you seek.
[ http://oss.sgi.com/projects/pcp/ ]



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