>PERFORMANCE!!! My B&W has an IDE ATA DMA33 controller and a Maxtor FireBall
30 Gig drive (ATA133, 5,400rpm, 512K cache). The IDE drive gets better
benchmark scores then the SCSI drive under Mac OS X. Both drives show an
unimpressive 10 MB/sec maximum transfer rate (sequential read test 1024k)
under Mac OS X. This is understandable for the IDE drive but NOT MY BRAND
NEW ATTO ULTRA SCSI/10,000RPM DRIVE COMBO!!!
>The drive is using the AppleSym8xx driver for the SCSI controller according
to the ATTO Config Utility. The card came loaded with firmware version 1.6.4
(latest available).
>The kick in the head is...
>Mac OS 9.2.2 Benchmark tests show the drive performing at 60 MB/sec and the
IDE drive at 28 MB/sec. Both are totally expected results
Mac OS X 10.2 is officially "supported" by ATTO and the LVD2D card and Mac
OS X 10.3 is not "officially" supported. I found out why. As a test I
installed Mac OS X 10.2 and re-ran my Xbench 1.1.3 tests with these results.
Is it possible to use a 10.2 ATTO driver on a 10.3 system?
MAC OS X 10.2
----------------------------------------------------------------------------
Results 86.14
System Info
Xbench Version 1.1.3
System Version 10.2 (6C115)
Physical RAM 512 MB
Model PowerMac1,1
Processor PowerPC Max @ 499 MHz
Version 7400 (Max) v2.9
L1 Cache 32K (instruction), 32K
(data)
L2 Cache 1024K @ 250 MHz
Bus Frequency 100 MHz
Video Card ATY,RV100
Drive Type MAXTOR ATLAS10K4_36WLS
Disk Test 86.14
Sequential 70.06
Uncached Write 53.17 22.16 MB/sec [4K blocks]
Uncached Write 87.67 35.90 MB/sec [256K blocks]
Uncached Read 62.83 9.95 MB/sec [4K blocks]
Uncached Read 91.21 36.85 MB/sec [256K blocks]
Random 111.79
Uncached Write 97.92 1.47 MB/sec [4K blocks]
Uncached Write 128.81 29.05 MB/sec [256K blocks]
Uncached Read 127.94 0.84 MB/sec [4K blocks]
Uncached Read 100.12 20.61 MB/sec [256K blocks]
MAC OS X 10.3
----------------------------------------------------------------------------
Results 40.33
System Info
Xbench Version 1.1.3
System Version 10.3.5 (7M34)
Physical RAM 512 MB
Model PowerMac1,1
Processor PowerPC Max @ 499 MHz
Version 7400 (Max) v2.9
L1 Cache 32K (instruction), 32K
(data)
L2 Cache 1024K @ 250 MHz
Bus Frequency 100 MHz
Video Card ATY,RV100
Drive Type MAXTOR ATLAS10K4_36WLS
Disk Test 40.33
Sequential 29.22
Uncached Write 29.66 12.36 MB/sec [4K blocks]
Uncached Write 29.09 11.91 MB/sec [256K blocks]
Uncached Read 33.03 5.23 MB/sec [4K blocks]
Uncached Read 25.94 10.48 MB/sec [256K blocks]
Random 65.07
Uncached Write 98.14 1.47 MB/sec [4K blocks]
Uncached Write 51.02 11.51 MB/sec [256K blocks]
Uncached Read 117.83 0.78 MB/sec [4K blocks]
Uncached Read 43.10 8.87 MB/sec [256K blocks]
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