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Subject12 Veliciraptors again w/x4 card (~1gbyte/sec aggregate read)!
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!

(For my RAID5)
Previously my write was limited to 400-420MiB/s now I see an additional
120-125 MiB/s increase!

jpiszcz@p34:/x/f$ dd if=/dev/zero of=bigfile bs=1M count=10240
10240+0 records in
10240+0 records out
10737418240 bytes (11 GB) copied, 20.7054 s, 519 MB/s
jpiszcz@p34:/x/f$ sync
jpiszcz@p34:/x/f$ dd if=/dev/zero of=bigfile.1 bs=1M count=10240
10240+0 records in
10240+0 records out
10737418240 bytes (11 GB) copied, 20.4973 s, 524 MB/s
jpiszcz@p34:/x/f$ sync
jpiszcz@p34:/x/f$ dd if=bigfile of=/dev/null bs=1M count=10240
10240+0 records in
10240+0 records out
10737418240 bytes (11 GB) copied, 11.3529 s, 946 MB/s
jpiszcz@p34:/x/f$ sync
jpiszcz@p34:/x/f$ dd if=bigfile.1 of=/dev/null bs=1M count=10240
10240+0 records in
10240+0 records out
10737418240 bytes (11 GB) copied, 11.2635 s, 953 MB/s
jpiszcz@p34:/x/f$

--

For all disks:

Something I noticed is the x1 PCI-e cards are doing around 68MiB/s each
for 3 of them where the x4 has no issue pumping out 100MiB/s+ without a
problem, however keep in mind the bus is probably already taxed from the
6 sata drives on the southbridge.

vmstat output:

procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----

1 VR
0 1 160 45220 341772 6480468 0 0 122112 0 584 2082 1 7 73 20
0 1 160 46592 455436 6362088 0 0 113664 0 495 1968 0 4 74 21
2 VR
1 1 160 45540 3027724 3720340 0 0 243216 0 1006 4030 0 9 74 17
0 2 160 44988 3262220 3480648 0 0 234480 0 1008 4134 0 8 73 19
3 VR
1 2 160 44816 6600068 50476 0 0 330248 16 1342 4126 0 12 70 18
0 3 160 45440 6599812 50264 0 0 316032 8 1296 3878 0 12 72 17
4 VR
0 4 160 44504 6602488 47644 0 0 495232 0 1992 6081 0 20 57 23
1 3 160 45500 6602796 45980 0 0 483968 0 1915 6207 0 20 54 26
5 VR
1 5 160 43932 6602972 45304 0 0 606080 0 2375 6622 0 25 56 19
1 4 160 45412 6601852 45160 0 0 618756 0 2431 6791 0 25 53 21
6 VR
0 6 160 45000 6602348 44512 0 0 683904 8 2746 7880 0 31 42 27
0 6 160 45248 6602028 44460 0 0 705792 0 2754 7564 0 31 45 24
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
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

Just about 1 gigabyte per second total aggregate read for all drives on a
965 chipset!

Justin.


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