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SubjectRe: Xterm Hangs - Possible scheduler defect?
> But the other side of the coin is that a SCHED_FIFO userspace task
> presumably has extreme latency requirements, so it doesn't *want* to be
> preempted by some routine kernel operation. People would get irritated if
> we were to do that.

Just to follow up a bit. People writing apps that run at SCHED_FIFO know
that they aren't getting hard real-time, and they are OK with that. If they
wanted something more they'd run on RTLinux. Why would it be wrong to preempt
the SCHED_FIFO process in the case, assuming that it is too hard to fix a broken
design that doesn't allow the necessary kernel threads to run on any CPU?

Chad
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