Change Details

HHVM has been locking up in production, typically right after a big deployment which touches lots of file. Typically only one or two app servers are affected. I don't have exact numbers, but I believe that this has happened at least a dozen times. quickstack shows many threads stuck in __lll_lock_wait, many with HPHP::StatCache::refresh in the stack. Attaching a backtrace from mw1141. {F43152}

**Upstream HHVM bug: [#1402 deadlock with tbb](https://github.com/facebook/hhvm/issues/1402)** HHVM has been locking up in production, typically right after a big deployment which touches lots of file. Typically only one or two app servers are affected. I don't have exact numbers, but I believe that this has happened at least a dozen times. quickstack shows many threads stuck in __lll_lock_wait, many with HPHP::StatCache::refresh in the stack. Attaching a backtrace from mw1141. {F43152}

**Upstream HHVM bug: [#1402 deadlock with tbb](https://github.com/facebook/hhvm/issues/1402)** HHVM has been locking up in production, typically right after a big deployment which touches lots of file. Typically only one or two app servers are affected. I don't have exact numbers, but I believe that this has happened at least a dozen times. quickstack shows many threads stuck in __lll_lock_wait, many with HPHP::StatCache::refresh in the stack. Attaching a backtrace from mw1141. {F43152}