Messages in this thread |  | | Date | Fri, 10 Jan 1997 13:51:47 +0100 | From | Uwe Bonnes <> | Subject | Re: Wierd IDE/Triton behavior |
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>>>>> "Benson" == Benson L Chow <bc3c+@andrew.cmu.edu> writes:
Benson> This probably isn't exactly a kernel problem, since I had drives Benson> that work fin ewith the current linux IDE/Triton driver. Benson> However, I have a IBM DAQA32160 drive that is getting strange Benson> timing results with hdparm(8). In MSDOS/Win95 I get around the Benson> expected 6MB/sec transfer rate. However, under Linux I can get Benson> anywhere from 1.8MB/sec to 3.5MB/sec. with hdparm. Dumping with Benson> dd direct from disk to /dev/null gives similar results. What's Benson> strange is the other drives I've had (that supports mode3 only) Benson> can get consistent 3.1MB/sec though it's clearly a older, slower Benson> drive (Maxtor 7850). This clearly points to a possible problem Benson> with the drive itself but apparently other IBM DAQA31260's are Benson> also implemented this way. I'm just wondering if anyone has Benson> seen something like this happen on their drives.
Benson> ...
Benson> Under linux: IBM DAQA gets random 1.6MB/sec to 6 MB/sec, average Benson> 2 MB/sec Maxtor gets about the same as windoze... 3.1 MB/sec Benson> consistently
Benson> ...
Benson> Thanks for any suggestions, and/or anyone who gets similar Benson> results. - -bc
With 2.0.27 and 2,0,26, I have similar changing and slow results on a different Gigabyte ATEP and Gigabyte HX boards. Some times ago, with tests, I had consistant test with high speed.
I have some older kernels down to bzimage2.011 floating around and hope to test them for their behaviour.
Uwe Bonnes bon@elektron.ikp.physik.th-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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