Timo Railo wrote: > Something is wacky. Any idea what could be causing such a poor > performance. Quite new hardware, normal IDE, disks in separate BUSses. > > tmoby:~# hdparm -T /dev/md0 > > hdparm -Tt /dev/hda /dev/hdc /dev/md0 > > /dev/hda: > Timing buffer-cache reads: 1828 MB in 2.00 seconds = 914.00 > MB/sec Timing buffered disk reads: 8 MB in 3.00 seconds = > 2.67 MB/sec > > /dev/hdc: > Timing buffer-cache reads: 1864 MB in 2.00 seconds = 932.00 > MB/sec Timing buffered disk reads: 10 MB in 3.69 seconds = > 2.71 MB/sec > > /dev/md0: > Timing buffer-cache reads: 1864 MB in 2.00 seconds = 932.00 > MB/sec Timing buffered disk reads: 10 MB in 3.63 seconds = > 2.75 MB/sec > > > Cheers, > Timo Railo
Check your hd settings via hdparm -i /dev/hda to see if dma is enabled. It's normally disabled so you'll have to enable it. hdparm -d1 /dev/hda to set it. Then adjust the hdparm script in /etc/init.d to enable this on startup or adjust your kernel to always set this automatically. Regards, Benedict -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
