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SubjectRe: 12 Veliciraptors again w/x4 card (~1gbyte/sec aggregate read)!


On Mon, 7 Jul 2008, Justin Piszcz wrote:

> Each PCI-e x1 card has 1 veliciraptor on it now.
> Got an x4 card wit 4 sata ports:
>
> Not quite the > 1 gbyte/sec I was hoping for in regards to the reads
> but pretty close!

Going to remove one of the drives from the x1 card and put it on the x4
card instead, then I will use all 4 SATA ports on the x4 and hopefully get
better bw.

If you look at 7,8,9 there is little improvement: (PCI-e x1)

7 VR
2 6 160 46744 6599020 44688 0 0 748204 17 3042 9084 0 34 40 26
3 6 160 46592 6598824 44372 0 0 747520 8 2975 9047 1 33 31 36
8 VR
2 7 160 46512 6598612 44580 0 0 761184 16 3089 9937 0 36 40 24
2 7 160 44528 6600392 44360 0 0 759720 8 2993 9522 0 36 36 28
9 VR
2 8 160 47152 6596824 44572 0 0 767016 0 3075 9730 1 37 39 24
2 7 160 46576 6597728 44688 0 0 771200 0 3032 9568 0 37 40 23

But once I hit the drives on the x4 card, vroom vroom!

10 VR
0 10 160 45048 6598240 44428 0 0 889072 8 3599 11561 0 47 20 33
2 10 160 45232 6598116 44772 0 0 890112 0 3495 11547 0 46 23 31
11 VR
4 8 160 45536 6594716 44600 0 0 996352 0 3947 12134 1 62 13 25
2 9 160 45348 6594912 44096 0 0 1009152 0 3949 11949 0 63 10 28
12 VR
6 8 160 45092 6583136 47016 0 0 1063200 0 4187 12394 1 71 9 21
3 11 160 47080 6578492 47588 0 0 1058412 0 4224 12547 1 72 8 20


Justin.



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