search for: getline_nohang

Chandler Carruth via llvm-dev <llvm-dev at lists.llvm.org> writes: > What you're seeing is just the fact that lit is waiting on > subprocesses (select is waiting on the pipes i suspect). Right. Some digging revealed that it is waiting on getline_nohang.cc.tmp, a tsan test. I see that this test has been disabled for NetBSD, due to it sometimes failing. I'm seeing the same on Linux. How can we stabilize the sanitizer tests so that check-all can work reliably? If some sanitizer tests are so flaky, I should think they should be marked UNSUPPO...

...uth via llvm-dev <llvm-dev at lists.llvm.org> writes: > > > >> What you're seeing is just the fact that lit is waiting on > >> subprocesses (select is waiting on the pipes i suspect). > > > > Right. Some digging revealed that it is waiting on > > getline_nohang.cc.tmp, a tsan test. > > > > I see that this test has been disabled for NetBSD, due to it sometimes > > failing. I'm seeing the same on Linux. > > > > How can we stabilize the sanitizer tests so that check-all can work > > reliably? If some sanitizer tests...

Hi, >From time to time, I see check-all hang during running of lit tests. The hang always happens at the > 90% completion stage and I'm pretty sure all tests have been run and check-all is just waiting for lit/python to exit. I see a single python processing running, taking very little CPU time. An strace of that process shows this: select(0, NULL, NULL, NULL, {0, 50000}) = 0