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Date: Thu, 16 Sep 2004 16:48:25 -0400 (EDT)
From: "Mike Jakubik" <mikej@rogers.com>
To: "Ariff Abdullah" <skywizard@MyBSD.org.my>
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cc: current@freebsd.org
Subject: Re: ad0: TIMEOUT - READ_DMA retrying (2 retries left) LBA=207594611
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Ariff Abdullah said:

> On Thu, 16 Sep 2004 13:13:42 -0700
> One more thing to consider, the default scheduler. I found that those
> errors occured with SCHED_4BSD (PREEMPTION or NOT), while SCHED_ULE
> (of course without PREEMPTION, or *else*), nothing such that.
>
> Note that this is *my* case, your mileage may vary.

This sounds about right. I noticed this problem on my system just after
the scheduler change.