Messages in this thread | | | Date | Sat, 19 Jul 2003 16:13:05 -0400 | From | Jeff Garzik <> | Subject | Re: libata driver update posted |
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Martin Schlemmer wrote: > On Fri, 2003-07-18 at 17:43, Jeff Garzik wrote: > > Slower this side. The Maxtor 40GB (ata133) is however just set to > udma33, where the Seagate 20GB (ata100) driver is set correctly to > udma100.
Yeah, that's expected: Parallel ATA (PATA) requires cable detection to go beyond UDMA/33, and my driver doesn't do that yet [since I'm concentrating on SATA].
> The Seagate start off ok (about 35mb/s), but then after doing some heavy > disk io, it also just drops to the 20mb/s region.
That's definitely interesting. Is "heavy disk I/O" the hdparm stuff you described, or something else too?
Jeff
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