Re: OT: performance problems.
On Tue, 8 Jan 2002 23:11:46 +0100
Theo Wribe <theo.wribe@telia.com> wrote:
> On Tue, Jan 08, 2002 at 02:00:27PM -0800, Brian Nelson wrote:
> > It's all about scsi baby...
> >
> > /dev/sdb:
> > Timing buffer-cache reads: 128 MB in 0.78 seconds =164.10 MB/sec
> > Timing buffered disk reads: 64 MB in 1.62 seconds = 39.51 MB/sec
>
> My Western Digital 80G 7200RPM is pretty good too.
>
> /dev/hdb:
> Timing buffer-cache reads: 128 MB in 0.80 seconds =160.00 MB/sec
> Timing buffered disk reads: 64 MB in 1.58 seconds = 40.51 MB/sec
Now that's something to get jealous over. How did you manage the
additional 20MB over mine (20MB+/sec)? Is it just the RPM's or some
other kernel compile option or hdparm paramater? Please don't tell me to
RTFM. 20MB/sec is the most I could get from all my fine reading and
tweaking. Also, I'm curious: anybody there who's managed to get even
half of the theoretical UDMA 100?
Reply to: