So this is the interesting data , right ?
1. 3510, RAID-10 using 24 disks from two enclosures, random
optimization, 32KB stripe width, write-back, one LUN
1.1 filebench/varmail for 60s
a. ZFS on top of LUN, atime=off
IO Summary: 490054 ops 8101.6 ops/s, (1246/1247 r/w) 39.9mb/s,
291us cpu/op, 6.1ms latency
2. 3510, 2x (4x RAID-0(3disks)), 32KB stripe width,
random optimization, write back. 4 R0 groups are in one enclosure
and assigned to primary controller then another 4 R0 groups are in other
enclosure
and assigned to secondary controller. Then RAID-10 is created with
mirror groups between controllers. 24x disks total as in #1.
2.1 filebench/varmail 60s
a. ZFS RAID-10, atime=off
IO Summary: 379284 ops 6273.4 ops/s, (965/965 r/w) 30.9mb/s,
314us cpu/op, 8.0ms latency
Have you tried 1M stripes spacially in case 2 ?
-r
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