From: Dave Chinner <david@fromorbit.com>
To: "Ma, Jianpeng" <jianpeng.ma@intel.com>
Cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: Question: How to use systemtap count the total inode read from disk
Date: Tue, 30 Sep 2014 14:39:13 +1000 [thread overview]
Message-ID: <20140930043913.GP4758@dastard> (raw)
In-Reply-To: <6AA21C22F0A5DA478922644AD2EC308C8C986B@SHSMSX101.ccr.corp.intel.com>
On Tue, Sep 30, 2014 at 02:39:28AM +0000, Ma, Jianpeng wrote:
> Hi all,
> I want to count the total read inode from disk.
XFS already does that for you:
$ pminfo -tf xfs.inode_ops.ig_missed
xfs.inode_ops.ig_missed [number of failed in memory inode lookup operations]
value 1835354
$
And that's the number read from disk as reported by PCP. If you
don't have PCP:
$ awk '/ig/ {print $5}' /proc/fs/xfs/stat
1835354
$
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
prev parent reply other threads:[~2014-09-30 4:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-30 2:39 Question: How to use systemtap count the total inode read from disk Ma, Jianpeng
2014-09-30 4:39 ` Dave Chinner [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140930043913.GP4758@dastard \
--to=david@fromorbit.com \
--cc=jianpeng.ma@intel.com \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.