Date: Tue, 15 Feb 2005 21:17:23 +1300 From: Mark Kirkwood <markir@paradise.net.nz> To: Rob <spamrefuse@yahoo.com> Cc: freebsd-stable@freebsd.org Subject: Re: atapci VIA 82C596B UDMA66 controller: problem for 5.X ? Message-ID: <4211B013.9000809@paradise.net.nz> In-Reply-To: <20050215070722.44055.qmail@web54010.mail.yahoo.com> References: <20050215070722.44055.qmail@web54010.mail.yahoo.com>
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Rob wrote: > In this case there's only one harddisk and when I do > # atacontrol mode 0 UDMA66 BIOSPIO > > I get lots of such lines: > > ad0: WARNING - WRITE_DMA UDMA ICRC error (retrying > request) LBA=20185375 > ad0: WARNING - WRITE_DMA UDMA ICRC error (retrying > request) LBA=20185375 > ad0: FAILURE - WRITE_DMA status=51<READY,DSC,ERROR> > error=84<ICRC,ABORTED> LBA=20185375 I am wondering if building a kernel with the various debugging options turned on might help (see the developers handbook). If you can get a dump or trace then there is a good chance that one of the FreeBSD hackers on this list or -bugs can sort it! > Transfer rates: > outside: 102400 kbytes in 19.370328 sec > = 5286 kbytes/sec > middle: 102400 kbytes in 19.378847 sec > = 5284 kbytes/sec > inside: 102400 kbytes in 19.379687 sec > = 5284 kbytes/sec Pretty low transfer rates, clearly not UDMA66! best wishes Mark
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