Messages in this thread |  | | From | "Michael Kwasigroch" <> | Date | Fri, 20 Oct 2000 15:29:53 +0200 |
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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
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