Thomas Løcke wrote:

> Lester Caine wrote:
>> OK I've checked the other two Linux machines all three with the same
>> motherboard, but different disk arrangements, and the first is less than half
>> the speed of the other two on cached performance, but seems much the best on
>> buffered performance. All three are AMD64 4200X2's with DDR2 memory, although
>> the other to only have 2Gb each.
>>
>> Windows XP is running on exactly the same hardware ( a waste I know ) but is
>> three times faster - so where do I go next :(
>
> You could try this:
>
> http://hdparm-win32.dyndns.org/hdparm/
>
> And see if your harddrives are performing significantly faster on the
> Windows platform.
>
> Other than that I really don't know what to suggest. I've had zero
> performance issues moving from Windows to Slackware 12.

Well I don't think that the windows version is producing comparable results.
All three machines are showing cached read results in the 30to40 MB/sec range
and buffer disk read in the 40to50MB/sec range. Nothing gets over 50MB/sec.

I've spotted two problems with the Linux box, the DDR2 memory is only PC4200
and for some reason I've managed to put a Semperon 3500 processor in. I've got
4 sticks of PC6400 on the way, and a 64X2 6400+ 2MB processor to drop in.

Michael - These machine are all using ALiveSATA2-GLAN motherboards. VIA K8T890
chipset, but I understand the memory interface is on the processor. I've got
a couple of other things to try and see what happens.

--
Lester Caine - G8HFL
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