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2009 Mac Pro (4)x SSD RAID 0, Seems Slow...

D

dsa420

macrumors 6502
Original poster
Feb 23, 2007
440
14
I have (4) 30GB OCZ Vertex in a RAID 0 array using software RAID in my 2009 Mac Pro Quad core, overall performance seems lagging. Check the Xbench scores below, dont seem to be limited by the I/O throttling as I am not reaching max speeds:

Results 271.94
System Info
Xbench Version 1.3
System Version 10.6 (10A432)
Physical RAM 3072 MB
Model MacPro4,1
Drive Type SSD RAID
CPU Test 192.23
GCD Loop 292.22 15.40 Mops/sec
Floating Point Basic 169.99 4.04 Gflop/sec
vecLib FFT 112.54 3.71 Gflop/sec
Floating Point Library 381.92 66.51 Mops/sec
Thread Test 668.92
Computation 813.65 16.48 Mops/sec, 4 threads
Lock Contention 567.90 24.43 Mlocks/sec, 4 threads
Memory Test 345.56
System 334.46
Allocate 259.51 952.99 Kalloc/sec
Fill 323.31 15720.28 MB/sec
Copy 494.27 10208.92 MB/sec
Stream 357.42
Copy 362.93 7496.10 MB/sec
Scale 350.90 7249.53 MB/sec
Add 368.73 7854.81 MB/sec
Triad 347.93 7443.03 MB/sec
Quartz Graphics Test 241.23
Line 214.34 14.27 Klines/sec [50% alpha]
Rectangle 273.87 81.76 Krects/sec [50% alpha]
Circle 234.38 19.11 Kcircles/sec [50% alpha]
Bezier 230.40 5.81 Kbeziers/sec [50% alpha]
Text 262.95 16.45 Kchars/sec
OpenGL Graphics Test 135.69
Spinning Squares 135.69 172.13 frames/sec
User Interface Test 353.96
Elements 353.96 1.62 Krefresh/sec
Disk Test 552.54
Sequential 382.85
Uncached Write 546.95 335.82 MB/sec [4K blocks]
Uncached Write 833.59 471.64 MB/sec [256K blocks]
Uncached Read 156.14 45.69 MB/sec [4K blocks]
Uncached Read 984.79 494.95 MB/sec [256K blocks]
Random 992.40
Uncached Write 458.54 48.54 MB/sec [4K blocks]
Uncached Write 922.09 295.20 MB/sec [256K blocks]
Uncached Read 3461.10 24.53 MB/sec [4K blocks]
Uncached Read 2099.22 389.52 MB/sec [256K blocks]
 
dsa420 said:
I have (4) 30GB OCZ Vertex in a RAID 0 array using software RAID in my 2009 Mac Pro Quad core, overall performance seems lagging. Check the Xbench scores below, dont seem to be limited by the I/O throttling as I am not reaching max speeds:

Results 271.94
System Info
Xbench Version 1.3
System Version 10.6 (10A432)
Physical RAM 3072 MB
Model MacPro4,1
Drive Type SSD RAID
CPU Test 192.23
GCD Loop 292.22 15.40 Mops/sec
Floating Point Basic 169.99 4.04 Gflop/sec
vecLib FFT 112.54 3.71 Gflop/sec
Floating Point Library 381.92 66.51 Mops/sec
Thread Test 668.92
Computation 813.65 16.48 Mops/sec, 4 threads
Lock Contention 567.90 24.43 Mlocks/sec, 4 threads
Memory Test 345.56
System 334.46
Allocate 259.51 952.99 Kalloc/sec
Fill 323.31 15720.28 MB/sec
Copy 494.27 10208.92 MB/sec
Stream 357.42
Copy 362.93 7496.10 MB/sec
Scale 350.90 7249.53 MB/sec
Add 368.73 7854.81 MB/sec
Triad 347.93 7443.03 MB/sec
Quartz Graphics Test 241.23
Line 214.34 14.27 Klines/sec [50% alpha]
Rectangle 273.87 81.76 Krects/sec [50% alpha]
Circle 234.38 19.11 Kcircles/sec [50% alpha]
Bezier 230.40 5.81 Kbeziers/sec [50% alpha]
Text 262.95 16.45 Kchars/sec
OpenGL Graphics Test 135.69
Spinning Squares 135.69 172.13 frames/sec
User Interface Test 353.96
Elements 353.96 1.62 Krefresh/sec
Disk Test 552.54
Sequential 382.85
Uncached Write 546.95 335.82 MB/sec [4K blocks]
Uncached Write 833.59 471.64 MB/sec [256K blocks]
Uncached Read 156.14 45.69 MB/sec [4K blocks]
Uncached Read 984.79 494.95 MB/sec [256K blocks]
Random 992.40
Uncached Write 458.54 48.54 MB/sec [4K blocks]
Uncached Write 922.09 295.20 MB/sec [256K blocks]
Uncached Read 3461.10 24.53 MB/sec [4K blocks]
Uncached Read 2099.22 389.52 MB/sec [256K blocks]
Click to expand...

If it helps, here are my results (120 Vertex, Quad, 12 gigs ram):

Results 215.34
System Info
Xbench Version 1.3
System Version 10.6.1 (10B504)
Physical RAM 12288 MB
Model MacPro4,1
Drive Type OCZ-VERTEX
CPU Test 154.43
GCD Loop 284.17 14.98 Mops/sec
Floating Point Basic 126.69 3.01 Gflop/sec
vecLib FFT 94.13 3.11 Gflop/sec
Floating Point Library 258.64 45.04 Mops/sec
Thread Test 749.95
Computation 840.04 17.02 Mops/sec, 4 threads
Lock Contention 677.32 29.14 Mlocks/sec, 4 threads
Memory Test 329.79
System 370.92
Allocate 465.12 1.71 Malloc/sec
Fill 281.16 13670.70 MB/sec
Copy 419.95 8673.82 MB/sec
Stream 296.88
Copy 313.05 6465.83 MB/sec
Scale 285.41 5896.57 MB/sec
Add 304.38 6483.95 MB/sec
Triad 286.52 6129.41 MB/sec
Quartz Graphics Test 219.66
Line 166.09 11.06 Klines/sec [50% alpha]
Rectangle 210.67 62.90 Krects/sec [50% alpha]
Circle 188.73 15.38 Kcircles/sec [50% alpha]
Bezier 197.60 4.98 Kbeziers/sec [50% alpha]
Text 611.24 38.24 Kchars/sec
OpenGL Graphics Test 91.41
Spinning Squares 91.41 115.96 frames/sec
User Interface Test 338.90
Elements 338.90 1.56 Krefresh/sec
Disk Test 310.36
Sequential 290.90
Uncached Write 375.66 230.65 MB/sec [4K blocks]
Uncached Write 373.26 211.19 MB/sec [256K blocks]
Uncached Read 158.88 46.50 MB/sec [4K blocks]
Uncached Read 472.76 237.61 MB/sec [256K blocks]
Random 332.62
Uncached Write 107.24 11.35 MB/sec [4K blocks]
Uncached Write 743.77 238.11 MB/sec [256K blocks]
Uncached Read 3515.94 24.92 MB/sec [4K blocks]
Uncached Read 932.94 173.11 MB/sec [256K blocks]
 
Well, of course. You're testing your hi-speed RAID with lame software not capable of recording proper results. X-Bench and Geekbench should be deleted from the drives of any serious tester's tool-set. They are lame and inaccurate.
 
3 SSD's will max out the ICH10R which handles the SATA connections. It has a max throughput of 660MB/s.

Why do you say your performance seems lagging... are you just being an ass?! :p :eek:

Also, as Tess says, there are no good benchmarking utilities for OSX... your best bet is some app benchmarks.

EDIT: here's another thread on disk performance you might find helpful to put things in context... https://forums.macrumors.com/threads/726879/
 
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