From: Hleb Valoshka <email@example.com> To: firstname.lastname@example.org Subject: raindrops tests fail on smp, fork is to blame Date: Sat, 23 Jun 2012 00:06:30 +0300 [thread overview] Message-ID: <CAAB-Kc=wfr0EQJ7h=YJ1J5NmAogEYbXmzy9f9Q6H21+-mntJ9w@mail.gmail.com> (raw) In-Reply-To: <CAAB-Kc=wfr0EQJ7h=YJ1J5NmAogEYbXmzy9f9Q6H21+-mntJ9w@mail.gmail.com> Hello! Raindrops build hangs on debian's build servers, but not on my local box. This occurs when tests are run under ruby1.9.1. You can see example of build log in . It took a lot of time to understand that the main difference between build and my box is number of CPUs: debian's servers are smp, my kvm box had only 1 cpu. Today I decided to start kvm with option -smp 2, and voila! build hung. The more tests with fork() you have the higher probability build will hang. When all tests are enabled, the probability of hang is about 100% when tests are run by gem2deb (it loads all test files simultaneously) and about 5-10% with "make test". When test_concurrect from test_middleware.rb and test_incr_shared, test_incr_decr and test_evaporate_with_fork from test_raindrops.rb are disabled build runs without hangs. Any ideas?  https://buildd.debian.org/status/fetch.php?pkg=ruby-raindrops&arch=kfreebsd-amd64&ver=0.9.0-1&stamp=1340389966
next parent reply other threads:[~2012-06-22 21:06 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-06-22 21:06 Hleb Valoshka [this message] 2012-06-22 22:29 ` Eric Wong 2012-06-23 11:59 ` Hleb Valoshka
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