My first two guesses are ulimit or numa. numactl --hardware will show your how many nodes your box has and if you're exhausting any of them.
On Thu, Sep 20, 2018, 6:11 PM greigwise <greigwise@xxxxxxxxxxx> wrote:
Hello, I'm running postgres 9.6.10 on Centos 7. Seeing the occasional out
of memory error trying to run a query. In the logs I see something like
this:
Grand total: 462104832 bytes in 795 blocks; 142439136 free (819860 chunks);
319665696 used
2018-09-20 18:08:01 UTC xxxx 5ba3e1a2.7a8a dbname ERROR: out of memory
2018-09-20 18:08:01 UTC xxxx 5ba3e1a2.7a8a dbname DETAIL: Failed on request
of size 2016.
If I have 142439136 free, then why am I failing on a request of size 2016?
Am I misunderstanding here?
Thanks,
Greig Wise
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