On Thu, Jan 28, 2016 at 01:43:13PM -0500, Jan Stancek wrote: > > How long should I have to wait for a fail? > > It's about 1000-2000 iterations for me, which I think you covered > by now in those 2 hours.
So I've been running: while ! ./pthread_cond_wait_1 ; do sleep 1; done overnight on the machine, and have yet to hit a wobbly -- that is, its still running. Also note that I don't think failing this test is a bug per se. Undesirable maybe, but within spec, since SIGALRM is process wide, so it being delivered to the SCHED_OTHER task is accepted, and SCHED_OTHER has no timeliness guarantees. That said; if I could reliably reproduce I'd have a go at fixing this, I suspect there's a 'fun' problem at the bottom of this.