From: Alex Elder <aelder@sgi.com>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH] xfs: force background CIL push under sustained load
Date: Thu, 23 Sep 2010 13:58:32 -0500 [thread overview]
Message-ID: <1285268312.1973.114.camel@doink> (raw)
In-Reply-To: <1285208863-31489-1-git-send-email-david@fromorbit.com>
On Thu, 2010-09-23 at 12:27 +1000, Dave Chinner wrote:
> From: Dave Chinner <dchinner@redhat.com>
>
> I have been seeing relatively frequent pauses in transaction throughput up to
> 30s long under heavy parallel workloads. The only thing that seemed strange
> about them was that the xfsaild was active during the pauses, but making no
> progress. It was running exactly 20 times a second (on the 50ms no-progress
> backoff), and the number of pushbuf events was constant across this time as
> well. IOWs, the xfsaild appeared to be stuck on buffers that it could not push
> out.
. . .
If you like I can take this patch directly (i.e., not wait for you to
send a separate pull request). It fixes a real bug but since delayed
logging still an experimental feature I am not inclined to send it to
Linus at this point in the cycle. Let me know if you disagree.
-Alex
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2010-09-23 18:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-23 2:27 [PATCH] xfs: force background CIL push under sustained load Dave Chinner
2010-09-23 10:43 ` Christoph Hellwig
2010-09-23 18:53 ` Alex Elder
2010-09-24 1:18 ` Dave Chinner
2010-09-24 14:02 ` Alex Elder
2010-09-23 18:58 ` Alex Elder [this message]
2010-09-24 2:15 ` Dave Chinner
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=1285268312.1973.114.camel@doink \
--to=aelder@sgi.com \
--cc=david@fromorbit.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.