PCI IRQ latency

[Daniel O'Connor]

On Wed, 19 Aug 2009, Zaphod Beeblebrox wrote:
> On Tue, Aug 18, 2009 at 11:23 PM, Daniel O'Connor 
<doconnor at gsoft.com.au>wrote:
> > Unfortunately it seems that _something_ blocks interrupts for >4
> > milliseconds, however I have no real idea how to go about finding
> > what it is.. Does anyone have any suggestions? (apart from get a
> > new DAQ card, I know this one already :)
>
> This is a huge shot-in-the-dark, but could this be something like
> ACPI or some other motherboard legacy cpu-using evil?  Would it be
> possible to test on something opposite-ish of what you're using (ie:
> amd vs. intel) just to cycle out all the potential goo?

It's worth a shot, I'll see if I can dig up some other hardware, thanks.

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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