zfs raidz on FreeBSD8.2 with Rocket Raid 2720 その3(ベンチマーク編)

ベンチマーク(zfs raidz)

どうでもいいけどAM3時台だと7月11日の日記になるのね。
例のごとくベンチマーク1回目はraidzで作成。

環境みたいなの

OS :FreeBSD 8.2(x64)
CPU:Intel E3200
MEM:8GB(DDR2)
M/B:ASUS P5KPL-AM EPU
I/F:HighPoint Rocket Raid 2720
HDD:WD20EARX * 4

追記：
/boot/loader.conf

vfs.zfs.txg.timeout=5

# zpool create tank raidz da0p1 da2p1 da3p1

1回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.461938 secs (734464727 bytes/sec)
2回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.415024 secs (758815379 bytes/sec)
3回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.437210 secs (747101634 bytes/sec)

4回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.450791 secs (740107921 bytes/sec)
5回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.339544 secs (801572600 bytes/sec)

6回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.339696 secs (801481739 bytes/sec)

7回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.394513 secs (769976262 bytes/sec)
8回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.561849 secs (687481253 bytes/sec)

9回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.590825 secs (674959074 bytes/sec)

10回目
server# dd if=/dev/zero of=/filez/tank/tmp bs=1m count=1024
1024+0 records in
1024+0 records out/
1073741824 bytes transferred in 1.341407 secs (800459492 bytes/sec)

平均だいたい751MByte/secくらい。
はえー