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Re: XFS unlink still slow on 3.1.9 kernel ?

To: Richard Ems <richard.ems@xxxxxxxxxxxxxxxxx>
Subject: Re: XFS unlink still slow on 3.1.9 kernel ?
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 13 Feb 2012 13:10:12 -0500
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <4F395134.8030202@xxxxxxxxxxxxxxxxx>
References: <4F394116.8080200@xxxxxxxxxxxxxxxxx> <20120213170825.GA7197@xxxxxxxxxxxxx> <4F394442.9020307@xxxxxxxxxxxxxxxxx> <20120213171556.GA13449@xxxxxxxxxxxxx> <4F3947D6.5060402@xxxxxxxxxxxxxxxxx> <20120213172937.GA25248@xxxxxxxxxxxxx> <4F394E10.9000804@xxxxxxxxxxxxxxxxx> <20120213180220.GA24163@xxxxxxxxxxxxx> <4F395134.8030202@xxxxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Mon, Feb 13, 2012 at 07:06:44PM +0100, Richard Ems wrote:
> So
> 1. use kernels > 3.2, if XFS partition was not created using "-i size=1024"


> 2. if XFS partition was created using "-i size=1024", kernels < 3.2 will
> also be fast while unlinking files with out of line attributes


For workloads like yours creating the large inodes (probably only with
512 byte inodes, though) will be preferably if you have a choice, as it
should be even faster.

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