Messages in this thread | | | Date | Fri, 15 Apr 2005 00:08:15 +0200 | From | Tomasz Chmielewski <> | Subject | Re: poor SATA performance under 2.6.11 (with < 2.6.11 is OK)? |
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Tomasz Torcz wrote: > On Thu, Apr 14, 2005 at 06:23:30PM +0200, Tomasz Chmielewski wrote: > >>I have a Silicon Image SIL3112A SATA PCI controller + 2x 200GB, 8MB >>Barracuda drives. > > > Bad combination.
OK, from the link you gave I can see that there might be some problems with SIL3112 controller + seagate disks...
>>The performance under 2.6 kernels is *very* poor (Timing buffered disk >>reads never more than 20 MB/sec); under 2.4 it runs quite fine (Timing >>buffered disk reads around 60 MB/sec). > > > 2.4 risk data corruption. 2.6 sata_sil.c contains blacklist for some > driver-controller combination. > > See: http://home-tj.org/m15w/
...but this link just doesn't explain why performance is sooo bad with 2.6.11.x kernels (Timing buffered disk reads at 10-20 MB/sec), and is just OK with older 2.6 kernels (Timing buffered disk reads even at about 100 MB/sec with 2.6.8.1).
any clue?
or should I wait for 2.6.11.7 (?), where it should be corrected?
Tomek
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