From: majianpeng <majianpeng@gmail.com>
To: Nagilum <nagilum@nagilum.org>
Cc: Neil Brown <neilb@suse.de>, linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Re: [PATCH] md:Add blk_plug in sync_thread.
Date: Mon, 11 Jun 2012 18:11:05 +0800 [thread overview]
Message-ID: <201206111811008288882@gmail.com> (raw)
In-Reply-To: 4FD5BB39.4040406@nagilum.org
On Mon, 11 Jun 2012 02:32:57 najilum wrote:
>On 06/11/2012 11:16 AM, majianpeng wrote:
>> Add blk_plug in sync_thread will increase the performance of sync.
>> Because sync_thread did not blk_plug,so when raid sync, the bio merge
>> not well.
>>
>> Testing environment:
>> SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI
>> Controller.
>> OS:Linux xxx 3.5.0-rc2+ #340 SMP Tue Jun 12 09:00:25 CST 2012
>> x86_64 x86_64 x86_64 GNU/Linux.
>> RAID5: four ST31000524NS disk.
>>
>> Without blk_plug:recovery speed about 63M/Sec;
>> Add blk_plug:recovery speed about 120M/Sec.
>Whahoo!! :)
What's mean ?
>
--------------
majianpeng
next prev parent reply other threads:[~2012-06-11 10:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-11 9:16 [PATCH] md:Add blk_plug in sync_thread majianpeng
2012-06-11 9:32 ` Nagilum
2012-06-11 10:11 ` majianpeng [this message]
2012-06-11 10:30 ` Nagilum
2012-06-27 2:30 ` NeilBrown
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