On Wed, 2006-03-15 at 22:15 -0500, Bill Rugolsky Jr. wrote:
>
> I'm heading home now (it's 22:00, and I've been here 16 hours
> already), but I figured that I'd post what I have thus far, and
> perhaps you can tell me what the problem is.
>
I think it would be better to try to identify the exact circumstances
that trigger the large PIO delay, than to start over debugging a new and
untested driver, especially if the SMM hypothesis has been ruled out.
You mentioned before the bug only hits with writes to multiple drives -
can you try to identify a pattern here - stress the drives one at a
time, try RAID vs. stressing both drives independently, remove one from
the bus. See if anything affects the duration of the latencies, etc.
Lots of people have these boards and it seems like if the problem was
widespread, I would have seen it on the Linux audio lists, as many of
those users run Ingo's instrumented kernel and they all know to report
latency traces when they get them.
Lee
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