On Fri, Apr 15, 2005 at 12:08:15AM +0200, Tomasz Chmielewski wrote: > >>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?
The sata_sil blacklist grown over time. Older version didn't mark your drive as bad. Check sata_sil history at http://www.linuxhq.com/kernel/file/drivers/scsi/sata_sil.c , you may find exact time when your drive got blacklisted. -- Tomasz Torcz To co nierealne - tutaj jest normalne. [EMAIL PROTECTED] Ziomale na życie mają tu patenty specjalne. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
