[[PageOutline]] * HDD benckmark with Crystal Disk Mark on iSCSI target * [http://crystalmark.info/software/CrystalDiskMark/ CrystalDiskMark 3.0.1a] * see also wiki:TipAndDoc/network/iscsi = initiator = * ThinkPad T61 7662-A25 (see wiki:TipAndDoc/Hardware#T617662-A25) * Windows 7 SP1 x64[[br]][[Image(attach.png,33%)]] [[Image(online.png,33%)]][[br]][[Image(taskmgr.png,33%)]] = target = * Ubuntu 10.04 x64 (Linux iscsi 2.6.32-31-generic !#61-Ubuntu SMP Fri Apr 8 18:25:51 UTC 2011 x86_64 GNU/Linux) * iscsitarget 1.4.19+svn275-ubuntu2 * /etc/ietd.conf {{{ Target iqn.2011-05.jp.mitty.local.iscsi:md0.disk Lun 0 Path=/dev/md0,Type=blockio }}} = hardware 1 = * Intel D915GAV * Pentium 4 531 3.00GHz * DDR400 2.5GB (see wiki:TipAndDoc/Hardware/memtest#a915GExpressonD915GAV) * Intel PRO/1000 PT * HDD {{{ /dev/sda: Device Model: ST340014A /dev/sdb: Device Model: WDC WD3000JD-22KLB0 /dev/sdc: Device Model: WDC WD3000JD-22KLB0 /dev/sdd: Device Model: WDC WD3000JD-22KLB0 /dev/sde: Device Model: WDC WD3000JD-22KLB0 }}} * hdparm {{{ /dev/sda: Timing buffered disk reads: 168 MB in 3.01 seconds = 55.77 MB/sec /dev/sdb: Timing buffered disk reads: 176 MB in 3.02 seconds = 58.29 MB/sec /dev/sdc: Timing buffered disk reads: 188 MB in 3.01 seconds = 62.42 MB/sec /dev/sdd: Timing buffered disk reads: 188 MB in 3.01 seconds = 62.36 MB/sec /dev/sde: Timing buffered disk reads: 186 MB in 3.00 seconds = 61.99 MB/sec }}} * fdisk {{{ /dev/sdb1 63 10485822 5242880 fd Linux raid autodetect /dev/sdc1 63 10485822 5242880 fd Linux raid autodetect /dev/sdd1 63 10485822 5242880 fd Linux raid autodetect /dev/sde1 63 10485822 5242880 fd Linux raid autodetect }}} == sdc1 == * /etc/ietd.conf {{{ Target iqn.2011-05.jp.mitty.local.iscsi:md0.disk Lun 0 Path=/dev/sdc1,Type=blockio }}} {{{ /dev/sdc1: Timing buffered disk reads: 186 MB in 3.00 seconds = 61.92 MB/sec }}} * result[[br]][[Image(D915GAV-sdc1.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 52.009 MB/s Sequential Write : 65.029 MB/s Random Read 512KB : 24.361 MB/s Random Write 512KB : 31.095 MB/s Random Read 4KB (QD=1) : 0.414 MB/s [ 101.0 IOPS] Random Write 4KB (QD=1) : 1.205 MB/s [ 294.3 IOPS] Random Read 4KB (QD=32) : 0.466 MB/s [ 113.8 IOPS] Random Write 4KB (QD=32) : 1.221 MB/s [ 298.2 IOPS] Test : 4000 MB [I: 1.1% (56.2/5117.0 MB)] (x5) Date : 2011/05/19 16:01:45 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) D915GAV/WD3000JD-22KLB0/no RAID }}} == RAID0 == mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l0 /dev/sd[bcde]1 {{{ md0 : active raid0 sde1[3] sdd1[2] sdc1[1] sdb1[0] 20971264 blocks 64k chunks }}} {{{ /dev/md0: Timing buffered disk reads: 564 MB in 3.00 seconds = 187.99 MB/sec }}} * result[[br]][[Image(D915GAV-0.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 46.145 MB/s Sequential Write : 88.671 MB/s Random Read 512KB : 22.361 MB/s Random Write 512KB : 72.244 MB/s Random Read 4KB (QD=1) : 0.561 MB/s [ 137.0 IOPS] Random Write 4KB (QD=1) : 5.289 MB/s [ 1291.2 IOPS] Random Read 4KB (QD=32) : 1.109 MB/s [ 270.8 IOPS] Random Write 4KB (QD=32) : 5.571 MB/s [ 1360.0 IOPS] Test : 4000 MB [I: 0.5% (0.1/20.0 GB)] (x5) Date : 2011/05/19 16:24:49 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) D915GAV/WD3000JD-22KLB0/RAID0 }}} == RAID1 == * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l1 /dev/sd[bcde]1 {{{ md0 : active raid1 sde1[3] sdd1[2] sdc1[1] sdb1[0] 5242816 blocks [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 186 MB in 3.01 seconds = 61.88 MB/sec }}} * result[[br]][[Image(D915GAV-1.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 38.576 MB/s Sequential Write : 34.906 MB/s Random Read 512KB : 27.966 MB/s Random Write 512KB : 19.856 MB/s Random Read 4KB (QD=1) : 0.495 MB/s [ 120.8 IOPS] Random Write 4KB (QD=1) : 1.147 MB/s [ 280.0 IOPS] Random Read 4KB (QD=32) : 1.057 MB/s [ 258.1 IOPS] Random Write 4KB (QD=32) : 1.163 MB/s [ 283.8 IOPS] Test : 4000 MB [I: 1.1% (56.2/5117.0 MB)] (x5) Date : 2011/05/19 17:01:12 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) D915GAV/WD3000JD-22KLB0/RAID1 }}} == RAID5 == * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l5 /dev/sd[bcde]1 {{{ md0 : active raid5 sde1[3] sdd1[2] sdc1[1] sdb1[0] 15728448 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 362 MB in 3.01 seconds = 120.33 MB/sec }}} * result[[br]][[Image(D915GAV-5.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 39.126 MB/s Sequential Write : 28.302 MB/s Random Read 512KB : 22.531 MB/s Random Write 512KB : 12.854 MB/s Random Read 4KB (QD=1) : 0.536 MB/s [ 131.0 IOPS] Random Write 4KB (QD=1) : 0.216 MB/s [ 52.7 IOPS] Random Read 4KB (QD=32) : 1.080 MB/s [ 263.6 IOPS] Random Write 4KB (QD=32) : 0.361 MB/s [ 88.0 IOPS] Test : 4000 MB [I: 0.6% (0.1/15.0 GB)] (x5) Date : 2011/05/19 17:45:55 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) D915GAV/WD3000JD-22KLB0/RAID5 }}} == RAID10 == === near === * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l10 -pn2 /dev/sd[bcde]1 {{{ md0 : active raid10 sde1[3] sdd1[2] sdc1[1] sdb1[0] 10485632 blocks 64K chunks 2 near-copies [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 278 MB in 3.02 seconds = 92.07 MB/sec }}} * result[[br]][[Image(D915GAV-10-near.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 35.480 MB/s Sequential Write : 62.991 MB/s Random Read 512KB : 19.100 MB/s Random Write 512KB : 54.111 MB/s Random Read 4KB (QD=1) : 0.507 MB/s [ 123.8 IOPS] Random Write 4KB (QD=1) : 2.436 MB/s [ 594.7 IOPS] Random Read 4KB (QD=32) : 1.053 MB/s [ 257.0 IOPS] Random Write 4KB (QD=32) : 2.528 MB/s [ 617.2 IOPS] Test : 4000 MB [I: 0.8% (0.1/10.0 GB)] (x5) Date : 2011/05/19 18:19:32 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) D915GAV/WD3000JD-22KLB0/RAID10 near }}} === offset === * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l10 -po2 /dev/sd[bcde]1 {{{ md0 : active raid10 sde1[3] sdd1[2] sdc1[1] sdb1[0] 10485504 blocks 64K chunks 2 offset-copies [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 260 MB in 3.01 seconds = 86.40 MB/sec }}} * result[[br]][[Image(D915GAV-10-offset.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 30.610 MB/s Sequential Write : 53.832 MB/s Random Read 512KB : 18.595 MB/s Random Write 512KB : 48.337 MB/s Random Read 4KB (QD=1) : 0.518 MB/s [ 126.4 IOPS] Random Write 4KB (QD=1) : 2.451 MB/s [ 598.3 IOPS] Random Read 4KB (QD=32) : 1.011 MB/s [ 246.8 IOPS] Random Write 4KB (QD=32) : 2.538 MB/s [ 619.5 IOPS] Test : 4000 MB [I: 0.8% (0.1/10.0 GB)] (x5) Date : 2011/05/19 19:00:05 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) D915GAV/WD3000JD-22KLB0/RAID10 offset }}} === far === * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l10 -pf2 /dev/sd[bcde]1 {{{ md0 : active raid10 sde1[3] sdd1[2] sdc1[1] sdb1[0] 10485504 blocks 64K chunks 2 far-copies [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 534 MB in 3.00 seconds = 177.81 MB/sec }}} * result[[br]][[Image(D915GAV-10-far.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 46.506 MB/s Sequential Write : 33.721 MB/s Random Read 512KB : 23.436 MB/s Random Write 512KB : 40.049 MB/s Random Read 4KB (QD=1) : 0.563 MB/s [ 137.4 IOPS] Random Write 4KB (QD=1) : 2.337 MB/s [ 570.5 IOPS] Random Read 4KB (QD=32) : 1.082 MB/s [ 264.1 IOPS] Random Write 4KB (QD=32) : 2.491 MB/s [ 608.1 IOPS] Test : 4000 MB [I: 0.8% (0.1/10.0 GB)] (x5) Date : 2011/05/19 19:40:51 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) D915GAV/WD3000JD-22KLB0/RAID10 far }}} == result == ||=method=||=sdc1=||=raid0=||=raid1=||=raid5=||=near=||=offset=||=far=|| ||hdparm||61.92||187.99||61.88||120.33||92.07||86.40||177.81|| ||Sequential Read||52.009||46.145||38.576||39.126||35.480||30.610||46.506|| ||Sequential Write||65.029||88.671||34.906||28.302||62.991||53.832||33.721|| ||Random Read 512KB||24.361||22.361||27.966||22.531||19.100||18.595||23.436|| ||Random Write 512KB||31.095||72.244||19.856||12.854||54.111||48.337||40.049|| ||Random Read 4KB (QD=1)||0.414||0.561||0.495||0.536||0.507||0.518|| 0.563|| ||Random Write 4KB (QD=1)||1.205||5.289||1.147||0.216||2.436||2.451|| 2.337|| ||Random Read 4KB (QD=32)||0.466||1.109||1.057||1.080||1.053||1.011|| 1.082|| ||Random Write 4KB (QD=32)||1.221||5.571||1.163||0.361||2.528||2.538|| 2.491|| [[Image(D915GAV-bar1.png,33%)]] [[Image(D915GAV-bar2.png,33%)]] [[Image(D915GAV-total.png,33%)]] = hardware 2 = * Gateway GT5236j (Intel DG33SXG2) * Celeron 430 1.80GHz * PC2-5300 2GB (see wiki:TipAndDoc/Hardware/memtest#G33onGatewayGT5240jPC2-5300) * Intel PRO/1000 PT * HDD {{{ /dev/sda: Device Model: ST340014A /dev/sdb: Device Model: WDC WD3000JD-22KLB0 /dev/sdc: Device Model: WDC WD3000JD-22KLB0 /dev/sdd: Device Model: WDC WD3000JD-22KLB0 /dev/sde: Device Model: WDC WD3000JD-22KLB0 }}} * hdparm {{{ /dev/sda: Timing buffered disk reads: 168 MB in 3.02 seconds = 55.70 MB/sec /dev/sdb: Timing buffered disk reads: 174 MB in 3.01 seconds = 57.82 MB/sec /dev/sdc: Timing buffered disk reads: 188 MB in 3.03 seconds = 62.13 MB/sec /dev/sdd: Timing buffered disk reads: 186 MB in 3.00 seconds = 61.92 MB/sec /dev/sde: Timing buffered disk reads: 184 MB in 3.01 seconds = 61.12 MB/sec }}} * fdisk {{{ /dev/sdb1 63 10485822 5242880 fd Linux raid autodetect /dev/sdc1 63 10485822 5242880 fd Linux raid autodetect /dev/sdd1 63 10485822 5242880 fd Linux raid autodetect /dev/sde1 63 10485822 5242880 fd Linux raid autodetect }}} == sdc1 == * /etc/ietd.conf {{{ Target iqn.2011-05.jp.mitty.local.iscsi:md0.disk Lun 0 Path=/dev/sdc1,Type=blockio }}} {{{ /dev/sdc1: Timing buffered disk reads: 188 MB in 3.02 seconds = 62.22 MB/sec }}} * result[[br]][[Image(GT5236j-sdc1.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 58.987 MB/s Sequential Write : 64.984 MB/s Random Read 512KB : 24.785 MB/s Random Write 512KB : 30.615 MB/s Random Read 4KB (QD=1) : 0.450 MB/s [ 109.9 IOPS] Random Write 4KB (QD=1) : 1.229 MB/s [ 300.1 IOPS] Random Read 4KB (QD=32) : 0.483 MB/s [ 117.9 IOPS] Random Write 4KB (QD=32) : 1.228 MB/s [ 299.8 IOPS] Test : 4000 MB [I: 1.1% (56.2/5117.0 MB)] (x5) Date : 2011/05/19 22:53:46 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) GT5236j/WD3000JD-22KLB0/no RAID }}} == RAID0 == mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l0 /dev/sd[bcde]1 {{{ md0 : active raid0 sde1[3] sdd1[2] sdc1[1] sdb1[0] 20971264 blocks 64k chunks }}} {{{ /dev/md0: Timing buffered disk reads: 690 MB in 3.01 seconds = 229.60 MB/sec }}} * result[[br]][[Image(GT5236j-0.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 94.797 MB/s Sequential Write : 94.943 MB/s Random Read 512KB : 33.619 MB/s Random Write 512KB : 79.516 MB/s Random Read 4KB (QD=1) : 0.577 MB/s [ 140.8 IOPS] Random Write 4KB (QD=1) : 5.226 MB/s [ 1275.8 IOPS] Random Read 4KB (QD=32) : 1.639 MB/s [ 400.3 IOPS] Random Write 4KB (QD=32) : 5.621 MB/s [ 1372.2 IOPS] Test : 4000 MB [I: 0.5% (0.1/20.0 GB)] (x5) Date : 2011/05/19 23:11:05 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) GT5236j/WD3000JD-22KLB0/RAID0 }}} == RAID1 == * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l1 /dev/sd[bcde]1 {{{ md0 : active raid1 sde1[3] sdd1[2] sdc1[1] sdb1[0] 5242816 blocks [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 174 MB in 3.00 seconds = 57.91 MB/sec }}} * result[[br]][[Image(GT5236j-1.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 46.092 MB/s Sequential Write : 54.080 MB/s Random Read 512KB : 28.015 MB/s Random Write 512KB : 26.521 MB/s Random Read 4KB (QD=1) : 0.498 MB/s [ 121.6 IOPS] Random Write 4KB (QD=1) : 1.147 MB/s [ 279.9 IOPS] Random Read 4KB (QD=32) : 1.740 MB/s [ 424.9 IOPS] Random Write 4KB (QD=32) : 1.187 MB/s [ 289.9 IOPS] Test : 4000 MB [I: 1.1% (56.2/5117.0 MB)] (x5) Date : 2011/05/19 23:40:16 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) GT5236j/WD3000JD-22KLB0/RAID1 }}} == RAID5 == * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l5 /dev/sd[bcde]1 {{{ md0 : active raid5 sde1[3] sdd1[2] sdc1[1] sdb1[0] 15728448 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 504 MB in 3.00 seconds = 167.82 MB/sec }}} * result[[br]][[Image(GT5236j-5.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 65.202 MB/s Sequential Write : 33.132 MB/s Random Read 512KB : 33.384 MB/s Random Write 512KB : 15.253 MB/s Random Read 4KB (QD=1) : 0.544 MB/s [ 132.8 IOPS] Random Write 4KB (QD=1) : 0.245 MB/s [ 59.9 IOPS] Random Read 4KB (QD=32) : 1.641 MB/s [ 400.6 IOPS] Random Write 4KB (QD=32) : 0.638 MB/s [ 155.8 IOPS] Test : 4000 MB [I: 0.6% (0.1/15.0 GB)] (x5) Date : 2011/05/20 0:14:47 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) GT5236j/WD3000JD-22KLB0/RAID5 }}} == RAID10 == === near === * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l10 -pn2 /dev/sd[bcde]1 {{{ md0 : active raid10 sde1[3] sdd1[2] sdc1[1] sdb1[0] 10485632 blocks 64K chunks 2 near-copies [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 346 MB in 3.01 seconds = 115.12 MB/sec }}} * result[[br]][[Image(GT5236j-10-near.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 50.446 MB/s Sequential Write : 81.228 MB/s Random Read 512KB : 31.192 MB/s Random Write 512KB : 59.114 MB/s Random Read 4KB (QD=1) : 0.528 MB/s [ 128.8 IOPS] Random Write 4KB (QD=1) : 2.496 MB/s [ 609.4 IOPS] Random Read 4KB (QD=32) : 1.679 MB/s [ 409.9 IOPS] Random Write 4KB (QD=32) : 2.607 MB/s [ 636.5 IOPS] Test : 4000 MB [I: 0.8% (0.1/10.0 GB)] (x5) Date : 2011/05/20 0:44:04 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) GT5236j/WD3000JD-22KLB0/RAID10 near }}} === offset === * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l10 -po2 /dev/sd[bcde]1 {{{ md0 : active raid10 sde1[3] sdd1[2] sdc1[1] sdb1[0] 10485504 blocks 64K chunks 2 offset-copies [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 348 MB in 3.01 seconds = 115.50 MB/sec }}} * result[[br]][[Image(GT5236j-10-offset.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 57.014 MB/s Sequential Write : 81.717 MB/s Random Read 512KB : 31.337 MB/s Random Write 512KB : 48.060 MB/s Random Read 4KB (QD=1) : 0.533 MB/s [ 130.1 IOPS] Random Write 4KB (QD=1) : 2.459 MB/s [ 600.2 IOPS] Random Read 4KB (QD=32) : 1.516 MB/s [ 370.1 IOPS] Random Write 4KB (QD=32) : 2.612 MB/s [ 637.7 IOPS] Test : 4000 MB [I: 0.8% (0.1/10.0 GB)] (x5) Date : 2011/05/20 1:10:50 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) GT5236j/WD3000JD-22KLB0/RAID10 offset }}} === far === * mitty@iscsi:~$ sudo mdadm --create /dev/md0 -n4 -l10 -pf2 /dev/sd[bcde]1 {{{ md0 : active raid10 sde1[3] sdd1[2] sdc1[1] sdb1[0] 10485504 blocks 64K chunks 2 far-copies [4/4] [UUUU] }}} {{{ /dev/md0: Timing buffered disk reads: 686 MB in 3.01 seconds = 227.96 MB/sec }}} * result[[br]][[Image(GT5236j-10-far.png,33%)]] {{{ ----------------------------------------------------------------------- CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo Crystal Dew World : http://crystalmark.info/ ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 98.748 MB/s Sequential Write : 44.695 MB/s Random Read 512KB : 33.241 MB/s Random Write 512KB : 40.741 MB/s Random Read 4KB (QD=1) : 0.574 MB/s [ 140.1 IOPS] Random Write 4KB (QD=1) : 2.399 MB/s [ 585.6 IOPS] Random Read 4KB (QD=32) : 1.627 MB/s [ 397.2 IOPS] Random Write 4KB (QD=32) : 2.500 MB/s [ 610.3 IOPS] Test : 4000 MB [I: 0.8% (0.1/10.0 GB)] (x5) Date : 2011/05/20 2:08:56 OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64) GT5236j/WD3000JD-22KLB0/RAID10 far }}} == result == ||=method=||=sdc1=||=raid0=||=raid1=||=raid5=||=near=||=offset=||=far=|| ||hdparm||62.22||229.60||57.91||167.82||115.12||115.50||227.96|| ||Sequential Read||58.987||94.797||46.092||65.202||50.446||57.014||98.748|| ||Sequential Write||64.984||94.943||54.080||33.132||81.228||81.717||44.695|| ||Random Read 512KB||24.785||33.619||28.015||33.384||31.192||31.337||33.241|| ||Random Write 512KB||30.615||79.516||26.521||15.253||59.114||48.060||40.741|| ||Random Read 4KB (QD=1)||0.450||0.577||0.498||0.544||0.528||0.533||0.574|| ||Random Write 4KB (QD=1)||1.229||5.226||1.147||0.245||2.496||2.459||2.399|| ||Random Read 4KB (QD=32)||0.483||1.639||1.740||1.641||1.679||1.516||1.627|| ||Random Write 4KB (QD=32)||1.228||5.621||1.187||0.638||2.607||2.612||2.500|| [[Image(GT5236j-bar1.png,33%)]] [[Image(GT5236j-bar2.png,33%)]] [[Image(GT5236j-total.png,33%)]]