I know this isn't helpful, but here is some additional information. I have a P233 with a non-UDMA66 45GB hard drive. I get about 12MB/s. I question the utility of the hdparm performance. This doesn't appear to be random reads. Either way, I get much better performance with Storm (based on debian) using 2.2.16 kernel. Maybe debian has an older kernel?
paul -- Paul McHale Work: 937-253-7610 Double E Solutions Mobile: 937-371-2828 4912 Effingham Fax: 413-215-3232 Dayton, Ohio 45431 -- > -----Original Message----- > From: wilson [mailto:wilson]On Behalf Of Wilson Yau > Sent: Wednesday, June 14, 2000 7:55 PM > To: debian-user@lists.debian.org > Subject: ABIT BP6 & UDMA-66: Support for Debian Linux > > > Hi, everyone! > > My system is Abit BP6 w/Dual Celeron 500MHz CPUs & 128MB PC-100 SDRAM on > board. One 18GB IBM UDMA-66 7200rpm HDD (master) & One 20GB IBM UDMA-66 > 7200rpm HDD (Slave) connected to the first ATA-66 channel. > > I frist installed the Gentus Linux (Abit's RedHat-based distribution) > from the CD come with the main board, and both SMP and UDMA-66 > functioned at after the first boot. (It's almost a painless > installation - very smooth indeed.) Execute "hdparm -t /dev/hde6" gave > a benchmark of something like 20MB per sec (very impressive! I have > another system running dual PIII-600 Coppermine with two 9GB SCSI HDD > which gave a figure something like 18MB/sec) > > Then, I changed my mind to remove Gentus and install Debian Potato. By > choosing installation from floppies, I downloaded all the required image > including the UDMA-66 patch from > > ftp://ftp.uk.debian.org/debian/dists/potato/main/disks-i386/2.2.15 -2000-06-07/images-1.44/udma66/ Installation was fine (the rescue disk could detect the ATA-66 HDD - no need to swop them to ATA-33 channel during installation). SMP was not ready yet. Kernel had to be recompiled. No Problem! However, when I did "hdparm -t /dev/hde6" & "hdparm -t /dev/hdf1", this time it gave a figure between 2 to 3 MB per sec. Even slower than a ATA-33 5400rpm HDD in a single PII-266 64MB RAM system. Q.1/ Can anyone explain to me this phenomenon? Q.2/ How to optimize my system performance (esp the UDMA-66 HDD) with Debian Linux? Many thanks for your help! Wilson -- Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED] < /dev/null
