Re: Absolutely horrid IDE performance...

Brian Macy (bmacy@sunshinecomputing.com)
Wed, 25 Nov 1998 11:53:24 -0800

>My guess is the lack of cache on the Celeron but I could be totally wrong.
>I've got the same 10G drive in my box and it absolutely flies under linux.
>BX chipset.. whereas it looks like you've got the FX chipset? That could be
>another reason. FX didn't have UDMA support.

The Celeron is definitely not the problem... shoot from what I've seen the
lack of cache actually helps performance (very slightly) on large bulk
memory transfers.

>Try -c1 -d1 -m16 -W1 with hdparm and see what it does.
>Make sure nothing important is on that drive beforehand.
>
>It's the fastest IDE drive I've ever seen.

Ok... I'll try after Thanksgiving (don't want to toast my server right
before I leave:). Which kernel are you using? Do you have UDMA enable in the
BIOS? The board is a SuperMicro P6SBA (BX chipset) and it has a PIIX4 on it.

Which the ShuttleHOT 569A w/ P75 here at work gets even worse performance on
the IBM 8.4gig 5400rpm drive.

Birna Macy

Brian Macy

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