Messages in this thread |  | | Subject | Re: cerberus errors on 2.4.19 (ide dma related) | From | Ed Sweetman <> | Date | 18 Aug 2002 14:31:30 -0400 |
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Preempt doesn't seem to be the culprit. Reran the test without using preempt and I got MEMORY errors within 22 seconds at udma2. So preempt is not the problem here.
On Sun, 2002-08-18 at 05:19, Andre Hedrick wrote: > > 2.4.19-preempt > > All bets are off because who knows what preempt is doing to the state > machines and in PIO you are dead. > > You can not delay transaction of data between interrupts w/o having the > transport help out. But the preempt don't get it. > > If you push your request size down to 8k or to a page you preempt problems > will go away, only because granularity of requests. And the price is > performance goes in the tank. But this is preempt so who cares.
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