Messages in this thread |  | | Date | Sat, 21 Oct 2000 02:37:18 -0500 | From | Jordan <> |
| |
Here is what I can acheive using an IBM DeskStar 75 Gig 7200 RPM UDMA 100 (controller only does UDMA 66) using linux-2.4.0-test10-pre3 and 3.6 drivers for my VIA vt82c596b (I believe they are not official yet but were released as a test package by email around October 6th on this email list), here is the output of hdparm -Tt /dev/hda on my machine:
4 root@ledzep /var/log > hdparm -Tt /dev/hda
/dev/hda: Timing buffer-cache reads: 128 MB in 0.91 seconds =140.66 MB/sec Timing buffered disk reads: 64 MB in 2.32 seconds = 27.59 MB/sec 5 root@ledzep /var/log >
Which blows away the U/W SCSI hard drive I had in my last machine!
Jordan Breeding
Michael Kwasigroch wrote: > > Hi, > > I recently bought a 40Gig IBM ATA100 disk as a replacement for a dying 4G > SCSI disk. I knew I was risking some trouble because I have an about 4 year > old triton 2 board (Intel 430HX) and I didn't want to risk more trouble > (and spend more money) by using a proprietary PCI IDE controller board. But > the disk was dead cheap and really big so I bought it and connected it as > the primary master on the onboard controller and... > > Linux (stock 2.2.17) could ony push about 2.6 MB/s "through" it (hdparm -Tt > /dev/hda)... :-( > > The scsi disks can do about 5.5 - 6.1 MB/s (8Bit fast SCSI, no ultra, > adaptec 2940 PCI). > > So I tried to enable IDE DMA, 16 bit data transfers, no use. That was quite > disappointing but I gave up until yesterday when I (again) searched > > http://www.linux-ide.org > > I got the latest 2.2.17 ide-patch, made a new kernel and voila: > > My new IDE disk now "flies" at about 9.2 MB/s and really outperforms the > scsi disks!!! > > ABOUT 3.5 PERFORMANCE GAIN! FOR FREE!!! Unbelievable, but the truth with > free software... > > One thing I don't understand: Why is this patch not in the stock kernel? It > should (positively) affect lots of people, or am I missing something? > > P.S.: Please email me directly, I'm not subscribed to any Linux list. > > PPS: Beware 33+ Gig IDE disks if you have an Award 4.51 BIOS and want to > boot from it. > You will **NOT** be able to boot from disks >33G due to a BIOS bug. > See > http://www.storage.ibm.com/techsup/hddtech/bios338gb.htm > and > http://www.storage.ibm.com/techsup/hddtech/hddfaqs.htm > for details. > > Enjoy. > > Mit freundlichen Gruessen / best regards > > Michael Kwasigroch > FaxPlus/Open Development > ________________________________________ > > eMail: mkwasigr@intercope.com > > INTERCOPE GmbH > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
|  |