On Tue, 19 Nov 2002, mdevin wrote: > # hdparm -tT /dev/hda > /dev/hda: > Timing buffer-cache reads: 128 MB in 0.46 seconds =278.26 MB/sec > Timing buffered disk reads: 64 MB in 16.12 seconds = 3.97 MB/sec > > Thus all the same as before whether turned on or off. I also tried > setting MultiSect to max of 16 (which hdparm -i told me it could do), > but this didn't change things either. > > So are the read times as expected for an IDE ATA133, 7200RPM, 40GB drive? > This is one of the faster IDE drives now isn't it?
P4 2.4ghz, Quantum AS 40 gig, using the onboard PDC 20726 controller # hdparm -Tt /dev/hdg /dev/hdg: Timing buffer-cache reads: 128 MB in 0.34 seconds =376.47 MB/sec Timing buffered disk reads: 64 MB in 1.93 seconds = 33.16 MB/sec Out of curiosity, one of the backup servers here, P120 with an 80 gig Maxtor D740X drive, connected to a PIIX3 controller. # hdparm -Tt /dev/hdc /dev/hdc: Timing buffer-cache reads: 128 MB in 4.26 seconds = 30.05 MB/sec Timing buffered disk reads: 64 MB in 7.52 seconds = 8.51 MB/sec As you can see, cpu and memory bandwidth make a tremendous difference on speeds. :) I wonder if this drive of yours is in the blacklist on DMA usage? Mike -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
