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Re: Strange delete performance using XFS

To: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>
Subject: Re: Strange delete performance using XFS
From: Thomas Kaehn <tk@xxxxxxxxxxx>
Date: Wed, 4 Apr 2007 16:21:42 +0200
Cc: xfs@xxxxxxxxxxx
In-reply-to: <Pine.LNX.4.64.0704041012330.7309@p34.internal.lan>
References: <20070404130535.GE18320@mail3b.westend.com> <Pine.LNX.4.64.0704040928110.7309@p34.internal.lan> <20070404134724.GF18320@mail3b.westend.com> <Pine.LNX.4.64.0704040957120.7309@p34.internal.lan> <Pine.LNX.4.64.0704041012330.7309@p34.internal.lan>
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Hi Justin,

On Wed, Apr 04, 2007 at 10:12:48AM -0400, Justin Piszcz wrote:
> On Wed, 4 Apr 2007, Justin Piszcz wrote:
> >On Wed, 4 Apr 2007, Thomas Kaehn wrote:
> >$ time for i in `seq 1 100000`; do dd if=/dev/zero of=$i bs=1k count=20 
> >>/dev/null 2>&1; done
> >
> >1. Six 400GB SATA drives using SW RAID5:
> >real    6m24.411s
> >user    0m43.097s
> >sys     2m17.350s
> >
> 
> The removals:
> The benchmark:
> $ time rm -rf test
> 
> 1. Six 400GB SATA drives using SW RAID5:
> real    0m33.996s
> user    0m0.057s
> sys     0m8.101s

thanks for your bechmark. To my mind this clearly shows that my
setup is wrong at some point. I'll try again with your mount options.

Ciao,
Thomas
-- 
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