Re: Setting oom_adj on linux?

Magnus Hagander <magnus(at)hagander(dot)net> writes:
> Do we need to make the value configurable? I'd certainly find it
> interesting to set backends to say 5 or something like that, that
> makes them less likely to be killed than any old "oops opened too big
> file in an editor"-process, but still possible to kill if the system
> is *really* running out of memory.

I don't want to go to the trouble of creating (and documenting) a
configure option for this. Much less a GUC ;-)

What I suggest is that we do something like

#ifdef LINUX_OOM_ADJ
...
fprintf(oom, "%d\n", LINUX_OOM_ADJ);
...
#endif

Then, somebody who wants the feature would build with, say,
-DLINUX_OOM_ADJ=0
or another value if they want that.

regards, tom lane