wohali commented on issue #2437: Hung beam.smp sitting at 100% CPU URL: https://github.com/apache/couchdb/issues/2437#issuecomment-574332938 ```irc 14:20 <vatamane> i had managed to lock beam on a mac when it was running eunit tests and I was compiling fdb from scratch, so all cpus were busy and memory usage was high 14:20 <+Wohali> what version of beam 14:20 <+Wohali> fbsd is currently on 21.something, i have to check 14:21 <vatamane> backtraces showed only one scheduler (#1) spinning and most other waiting on a condition variable 14:21 <vatamane> 21.3.8.4 14:21 <+Wohali> looks like fbsd is 21.3.8.11,4 so that lines up 14:22 <+Wohali> could this be another scheduler collapse? 14:23 <vatamane> since I saw the child_setup_failed which deals with forking ports (processes) like couchjs and cleaning them up and so on 14:24 <+Wohali> i guess we'll have to go spelunk into recent erlang changes in all that 14:25 <+davisp> Wohali: Probably that yeah. Specifically I'd go look at the commit history to that child_setup helper 14:26 <+davisp> https://github.com/erlang/otp/commits/master/erts/emulator/sys/unix/erl_ch ild_setup.c 14:26 <+Wohali> ok, at least there's a direction. i'll paste this convo into the bug 14:26 <+Wohali> ty for the pointer ```
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