Ben Chobot <[email protected]> writes:
> May 31 02:59:40 sfmelwss postgres[30103]: [1-1] ERROR: out of memory
> May 31 02:59:40 sfmelwss postgres[30103]: [1-2] DETAIL: Failed on request of
> size 16777212.
So the kernel isn't letting PG have any more memory.
> That seems pretty self-explainitory. But I'm not so sure, because SAR
> says:
> ...
> ...which indicates there was still plenty of space left in swap.
Which the kernel isn't letting us use. Check the "ulimit" settings
that the postmaster is being started with. On a Linux box, any of
the -d -m or -v settings might cause this.
It's possible you are running out of 32-bit address space in the backend
process, but what seems more likely is that the per-process ulimit is
unreasonably small.
regards, tom lane
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