Re: Re: [PATCH] md:Add blk_plug in sync_thread.

[majianpeng <majianpeng@xxxxxxxxx>]

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?韬{.n?????%??檩??w?{.n???{炳盯w???塄}?财??j:+v??????2??璀??摺?囤??z夸z罐?+?????w棹f