The score is this, I get a hard hang (capslock/numlock do not respond, can't ping) when running XOrg, always after loading the program nicotine (ports/net/nicotine), which is a python/gtk2 program. Sometimes, it has done a sudden reboot instead of a hang, and I haven't had much luck reproducing these results with any other program in X reliably. Also, I have not had any hang at all when not running X. As far as testing goes, ive generally recompiled the kernel with -j8 as a stress test, without XOrg, and have had no problems with any configuration. So the bug on my system involving sched_ule seems to be brought out by something nicotine is doing within the first minute or so of loading up. I do think that nicotine uses gdk threads, which use the posix threads, so the connection could be there...
I'm going to continue to search/test things as I think of them, but any advice as to what to check next would be helpful.
One thing that my results there don't list is the following: Never had a crash or hang with SMP disabled (even with sched_ule enabled). Also never had a crash or hang with sched_4bsd and SMP enabled.
My system is a Tyan Tiger MP motherboard with dual athlon MPs.
Any other information that you might find helpful to know, let me know.
Also: what other email lists should I post this too, if any? Should I make this into a problem report? sched_ule is already known to have problems...
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