On 06/11/2012 12:11 PM, majianpeng wrote: > 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 ? Almost doubled the performance with one simple change, that's great! :) -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
