On 9/24/07, Cliff Brake [off-list ref] wrote:

On 9/24/07, Cliff Brake [off-list ref] wrote:

quoted

On 9/22/07, Arnaldo Carvalho de Melo [off-list ref] wrote:

quoted

Look at the IRQ-<N> kernel thread that services the serial port hardware
interrupt, use chrt to bump its priority and see if it helps.

I don't see any IRQ-<N> processes on my system -- does this require
the RT patch?  Perhaps this is different on ARM/x86?

I've applied the RT patch which gives me the IRQ-N processes -- trying now ...

RT patch (2.6.23-rc4-rt1) fixed the problem without any additional
priority adjustments, so that is obviously the solution.  I guess I
should know by now that RT with Linux is still hit and miss without
the RT patch.

Thanks,
Cliff

-- 
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Cliff Brake
http://bec-systems.com