Richard Gooch (firstname.lastname@example.org)
Sun, 17 Jan 1999 21:31:12 +1100
Hi, all. I just noticed that if I run a RT (SCHED_FIFO) process
which hogs one CPU on a dual processor machine, system responsiveness
becomes extremely poor. A second (SCHED_OTHER) process will happily
compute away and get nearly 100% of the other CPU, but interactive
processes (i.e. X, top, xterm and so on) can take several seconds
before they respond to events. Even without the second SCHED_OTHER
compute process, the interactive response is still dreadful.
It's been a while (few months) since I've looked at the scheduler, but
IIRC this behaviour should not have happened with the old code.
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