I realize this is a very platform-specific thing, but should we consider setting the value of /proc/<pid>/oom_adj when running on linux? See:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=Documentation/filesystems/proc.txt;h=220cc6376ef80e0c9bcfec162d45552e729cdf5a;hb=45d28b097280a78893ce25a5d0db41e6a2717853 section 3.1. To get the best benefit, I think it needs to be done in cooperation between the startup scripts and PostgreSQL. We'd want -17 ("never oom kill") on the postmaster, but some different value on regular backends (since if it has to kill someone, it's better to pick a regular backend so we can do a controlled restart). Only root can drop the value, so the startup script needs to be part of it. But if we then want to increase it for sub-processes, that'd require something in the backend itself... -- Magnus Hagander Me: http://www.hagander.net/ Work: http://www.redpill-linpro.com/ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
