linux-ext4 - Re: Severe slowdown caused by jbd2 process

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Message-ID: <1295620109.22802.1.camel@tybalt>
Date:	Fri, 21 Jan 2011 14:28:29 +0000
From:	Jon Leighton <j@...athanleighton.com>
To:	Josef Bacik <josef@...hat.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: Severe slowdown caused by jbd2 process

Hi there,

On Fri, 2011-01-21 at 09:03 -0500, Josef Bacik wrote:
> Heh so now that I've had a moment to wake up, how about running your test on
> ext3, but mount the partition with
> 
> mount -o barrier
> 
> and see if it's still faster than ext4.  Thanks,

You're right, that slows it down significantly on the ext3 partition. Is
this expected behaviour with ext4 then?

Thanks

Jon

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