From: "Josef 'Jeff' Sipek" <jeffpc@josefsipek.net>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com
Subject: Re: task blocked for more than 120 seconds
Date: Thu, 27 Sep 2012 08:49:15 -0400 [thread overview]
Message-ID: <20120927124914.GD28852@poseidon> (raw)
In-Reply-To: <20120423232759.GO9541@dastard>
On Tue, Apr 24, 2012 at 09:27:59AM +1000, Dave Chinner wrote:
...
> So, yes, your hangs are definitely due to inode buffer RMW cycles
> when trying to flush dirty inodes from the cache. I have a few
> ideas on how to fix this - but I'm not sure whether a current TOT
> solution will be easily back-portable. The simplest solution is a
> readahead based solution - AIL pushing is async, and will cycle back
> to inodes that it failed to flush the first time past, so triggering
> readahead on the first pass might work just fine.
Have you had time to look at this? (We got bitten by this again and I
really don't want to go back to ext4.) Is there anything I can help with?
Jeff.
--
Evolution, n.:
A hypothetical process whereby infinitely improbable events occur with
alarming frequency, order arises from chaos, and no one is given credit.
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next prev parent reply other threads:[~2012-09-27 12:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-18 15:11 task blocked for more than 120 seconds Josef 'Jeff' Sipek
2012-04-18 18:28 ` Ben Myers
2012-04-18 23:48 ` Dave Chinner
2012-04-19 15:46 ` Josef 'Jeff' Sipek
2012-04-19 22:56 ` Dave Chinner
2012-04-20 13:58 ` Josef 'Jeff' Sipek
2012-04-21 0:29 ` Dave Chinner
2012-04-23 17:16 ` Josef 'Jeff' Sipek
2012-04-23 20:24 ` Josef 'Jeff' Sipek
2012-04-23 23:27 ` Dave Chinner
2012-04-24 15:10 ` Josef 'Jeff' Sipek
2012-09-27 12:49 ` Josef 'Jeff' Sipek [this message]
2012-09-27 22:50 ` Dave Chinner
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