fandino wrote this message on Tue, Oct 26, 2004 at 17:19 +0200: > John-Mark Gurney wrote: > >Yep, and I get decent performance: > > could repeat the test setting udma mode to UDMA4? Sure, though there is only one drive in this machine, so there is no problems with channel colissions... > >dmesg clip: > >atapci0: <VIA 82C686B UDMA100 controller> port > >0xc000-0xc00f,0x376,0x170-0x177,0 > >x3f6,0x1f0-0x1f7 at device 7.1 on pci0 > >atapci0: Correcting VIA config for southbridge data corruption bug > > hhhmmm, my dmesg doesn't print the message for the 686B data corruption bug. > > >ata0: channel #0 on atapci0 > >ata1: channel #1 on atapci0 > >ad0: 43979MB <IBM-DTLA-307045/TX6OA60A> [89355/16/63] at ata0-master > >UDMA100 > >Transfer rates: > > outside: 102400 kbytes in 2.857371 sec = 35837 > > kbytes/sec > > middle: 102400 kbytes in 3.561157 sec = 28755 > > kbytes/sec > > inside: 102400 kbytes in 5.635770 sec = 18170 > > kbytes/sec Well, looks like I get similar performance w/ UDMA4 aka UDMA66: Transfer rates: outside: 102400 kbytes in 2.828054 sec = 36209 kbytes/sec middle: 102400 kbytes in 3.506356 sec = 29204 kbytes/sec inside: 102400 kbytes in 5.641238 sec = 18152 kbytes/sec Note, I didn't reboot just before switching to UDMA4... -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."Received on Tue Oct 26 2004 - 21:14:59 UTC
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