"Tom Lane" <[EMAIL PROTECTED]> writes: > Gregory Stark <[EMAIL PROTECTED]> writes: >> We're seeing a problem where occasionally a process appears to be granted a >> lock but miss its semaphore signal. > > Kernel bug maybe? What's the platform?
It does sound like it given the way my description went. I was worried it may be some code path not setting waitStatus properly or the compiler caching it incorrectly somehow. But now that I check I see it's a pretty old kernel version (Linux 2.6.5) on the machine. The schedule was completely rewritten by Nick Piggin since then. I've suggested upgrading it but that may leave us in a bit of a pickle. If we update it then that throws away all the benchmark history since we can't really compare new benchmarks against old ones any more. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
