Re: oom_killer

On Thu, Apr 21, 2011 at 3:28 AM, Tory M Blue <tmblue(at)gmail(dot)com> wrote:
> Is there anyone that could help me understand why all of a sudden with
> no noticeable change in data, no change in hardware, no change in OS,
> I'm seeing postmaster getting killed by oom_killer?
>
> The dmesg shows that swap has not been touched free and total are the
> same, so this system is not running out of total memory per say.
>
> I keep thinking it's something to do with lowmem vs highmem 32bit vs
> 64 bit, but again no changes and I'm getting hit nightly on 2
> different servers (running slon, so switched over and same thing, even
> disabled memory over commit and still got nailed.
>
> Is there anyone familiar with this or could take a look at the dmesg
> output (off list) and decipher it for me?
>
> this is a Fedora 12 system, 2.6.32.23-170. I've been reading and
> appears this is yet another fedora bug, but so far I have not found
> any concrete evidence on how to fix it.
>
> Fedora 12
> 32gig memory, 8 proc
> postgres 8.4.4, slony 1.20
> 5 gigs of swap (never hit it!)

curious: using 32/64 bit postgres? what are your postgresql.conf
memory settings?

merlin