Bad SATA (Sil 3112A) performance with kernel 2.6.8
Andrey Andreev
andreev at cs.helsinki.fi
Mon Aug 30 09:31:36 UTC 2004
James Wilkinson wrote:
>>[andrei at brie andrei]$ sudo /sbin/hdparm -t -T /dev/sda
>>/dev/sda:
>> Timing buffer-cache reads: 1564 MB in 2.00 seconds = 780.95 MB/sec
>> Timing buffered disk reads: 44 MB in 3.12 seconds = 14.11 MB/sec
>>
>>Which is pretty awfuly slow, compared to 2.6.6 (over 50 MB/sec).
>
>
> Slow enough for PIO: what does hdparm -d /dev/sda report?
/dev/sda:
operation not supported on SCSI disks
I noticed that hdparm is not really very useful on SCSI disks. What'd be
its equivalent for SCSI?
//Andro
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