harddisk speed: 2.4.24 20+% faster then 2.6.3

[Danny ter Haar]

I've been checking, rechecking but cannot explain
why a "vannilla" debian install kernel (sid-testing install
cdrom) is faster then "Feisty Dunnart" on the same hardware.

hardware: Mini-itx with 1Ghz via-C3
200GB udma harddisk.

2.4.24:  
 Timing buffered disk reads:  150 MB in  3.01 seconds =  49.83 MB/sec

2.6.3 (vanilla):
 Timing buffered disk reads:  102 MB in  3.05 seconds =  33.40 MB/sec

2.6.3-mm4:
 Timing buffered disk reads:  108 MB in  3.00 seconds =  35.95 MB/sec

Bonnie tests confirm this!

hdparm & bonnie & kern.log for comparison put at: http://dth.net/c3/

Anyone any idea *why* ?

Mayby i'm overlooking something (it's kind of late on this
side of the pond) but still...

Open for feedback.

Danny

-- 
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