Gary L. Hennigan wrote: > Alexander <[EMAIL PROTECTED]> writes: > | Timing buffered disk reads: 32 MB in 6.87 seconds = 4.66 MB/sec > | > | Buffer-cache reads? Uh... explain that to me please, this particular UDMA > | can't go past 33 MB/s. > > The fastest disks manufactured are currently the > 10,000RPM drives, e.g., Seagate Cheetah, and their peak performance is > 20MB/s, and that's peak, which means probably only when > reading/writing data on the outter tracks would you ever get that > rate.
Right. Here's what I get on an alpha box with a 4.3 GB Seagate Cheetah (running Red Hat Linux, sorry!) # /sbin/hdparm -t -T /dev/sda3 /dev/sda3: Timing buffer-cache reads: 32 MB in 0.31 seconds =103.76 MB/sec Timing buffered disk reads: 16 MB in 1.17 seconds =13.65 MB/sec The system feels very fast. -- Peter Galbraith, research scientist <[EMAIL PROTECTED]> Maurice Lamontagne Institute, Department of Fisheries and Oceans Canada P.O. Box 1000, Mont-Joli Qc, G5H 3Z4 Canada. 418-775-0852 FAX: 775-0546 6623'rd Linux user at the Linux Counter -- http://counter.li.org/ -- Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED] < /dev/null
