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!! :) -- 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
