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KT7A-RAID performance boost

R

Rebus3

Junior Member
Following my initial installation of Win2kSP1 with normal ASPI enabled, v4.28 VIA driver set, block size set to 32kb, RAID throughput measured by WinBench99 was a tabletop flat 22MB/s from start to finish. Well, I disabled ASPI by modifying the txtsetup.sif file on the boot disk and reinstalled Win2k, with block size set to 16kb. Now transfer rate is between 48MB/s and 62MB/s. Strangely, it oscillates between these values. The plot is sort of a square wave but with pointed bottom dip. I'm happy with the transfer rate increase, but any idea what would cause a steady oscillation of about 15MB/s? The RAID controller is not sharing an IRQ and nothing else is running in the background.

Tbird 800 OC to 933
2 new WD 20GB 7200RPM UDMA100
CL SB Live 5.1
Leadtek GeForce MX
256MB PC133 SDRAM
FSB/MB 133MHz
Fast Ethernet
 
Hmm... I might be wrong, but I remember reading somewhere (maybe here at Anandtech) that the hdd SMART function might cause similar dips in performance. Try to disable it if it happens to be activated.

 
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