First off you chunksizes are different on the two volumes and secondly if you're looking for throughput performance move them up to like 512K or maybe more 2013/12/16 lilofile <lilofile@xxxxxxxxxx>: > the result of mdadm -D is as follows: > > root@host0:~# mdadm -D /dev/md126 > /dev/md126: > Version : 1.2 > Creation Time : Sat Dec 7 16:26:04 2013 > Raid Level : raid5 > Array Size : 1171499840 (1117.23 GiB 1199.62 GB) > Used Dev Size : 234299968 (223.45 GiB 239.92 GB) > Raid Devices : 6 > Total Devices : 6 > Persistence : Superblock is persistent > > Intent Bitmap : Internal > > Update Time : Fri Dec 13 22:51:04 2013 > State : active > Active Devices : 6 > Working Devices : 6 > Failed Devices : 0 > Spare Devices : 0 > > Layout : left-symmetric > Chunk Size : 64K > > Name : host0:md126 > UUID : aaa3075d:f25e3bd0:9dd347c5:fb58192f > Events : 158 > > Number Major Minor RaidDevice State > 0 65 112 0 active sync /dev/sdx > 1 65 96 1 active sync /dev/sdw > 2 65 80 2 active sync /dev/sdv > 3 65 64 3 active sync /dev/sdu > 4 65 48 4 active sync /dev/sdt > 6 65 32 5 active sync /dev/sds > root@host0:~# > > > root@host0:~# mdadm -D /dev/md129 > /dev/md129: > Version : 1.2 > Creation Time : Sun Dec 8 15:59:11 2013 > Raid Level : raid5 > Array Size : 1171498880 (1117.23 GiB 1199.61 GB) > Used Dev Size : 234299776 (223.45 GiB 239.92 GB) > Raid Devices : 6 > Total Devices : 6 > Persistence : Superblock is persistent > > Update Time : Mon Dec 16 21:50:45 2013 > State : clean > Active Devices : 6 > Working Devices : 6 > Failed Devices : 0 > Spare Devices : 0 > > Layout : left-symmetric > Chunk Size : 128K > > Name : host0:md129 (local to host sc0) > UUID : b80616a9:49540979:90b20aa6:1b22f67b > Events : 31 > > Number Major Minor RaidDevice State > 0 65 16 0 active sync /dev/sdr > 1 65 0 1 active sync /dev/sdq > 2 8 224 2 active sync /dev/sdo > 3 8 240 3 active sync /dev/sdp > 4 8 208 4 active sync /dev/sdn > 5 8 192 5 active sync /dev/sdm > root@host0:~# > > > ------------------------------------------------------------------ > 发件人：Tommy Apel <tommyapeldk@xxxxxxxxx> > 发送时间：2013年12月16日(星期一) 21:32 > 收件人：lilofile <lilofile@xxxxxxxxxx> > 抄 送：linux-raid <linux-raid@xxxxxxxxxxxxxxx> > 主 题：Re: 答复：two raid5 performance > > Please give us the output of mdadm -D for each array aswell, and just > in case, also the model of the SSD's in use > > 2013/12/16 Dag Nygren <dag@xxxxxxxxxx>: >> On Monday 16 December 2013 15:57:42 lilofile wrote: >>> the disks involved in the array is sTEC ssd disk,they are connected by mpt2sas 6Gb/s >> >> I/O bus to the card? >> >> Best >> Dag >> >> -- >> 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 > > > > -- > > /Tommy -- /Tommy -- 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
