From: wbrana@gmail.com
To: linux-kernel@vger.kernel.org
Subject: Re: EXT4 RAID read performance
Date: Sun, 20 Sep 2009 00:54:43 +0200 [thread overview]
Message-ID: <a769871e0909191554hf15150fiae155d71b47a3313@mail.gmail.com> (raw)
In-Reply-To: <a769871e0909191112t3adb852cn93d72dc5fd94b9fd@mail.gmail.com>
creating tar of compiled kernel takes much longer with ext4
time tar c linux-2.6.31 | cat >/dev/null
reiser3:
real 0m11.425s
user 0m0.229s
sys 0m1.586s
ext4:
real 0m23.942s
user 0m0.183s
sys 0m1.440s
partition was remounted before test
>
> RAID details:
>
> md8 : active raid10 sda7[0] sdd7[3] sdc7[2] sdb7[1]
> 62925824 blocks 256K chunks 2 far-copies [4/4] [UUUU]
>
> Ext4:
> mkfs.ext4 -E stride=64,stripe-width=128 /dev/md8
> mount -t ext4 -o noatime,auto_da_alloc,commit=600 /dev/md8 /mnt/md8
>
> Reiser3:
> mkfs.reiserfs /dev/md8
> mount -t reiserfs -o noatime,notail /dev/md8 /mnt/md8
>
next prev parent reply other threads:[~2009-09-19 22:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-19 18:12 wbrana
2009-09-19 22:54 ` wbrana [this message]
2009-09-19 23:18 ` Theodore Tso
2009-09-26 14:27 ` wbrana
[not found] <dmcHr-ep-7@gated-at.bofh.it>
[not found] ` <1cddc13e-c147-43e0-9b40-5e3f07941b27@e34g2000vbm.googlegroups.com>
2009-09-20 10:40 ` wbrana
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