On 12/01/2014 05:39 PM, Tomas Vondra wrote:
Hi all,
while working on the patch decreasing amount of memory consumed by
array_agg [1], I've ran into some strange OOM issues. Reproducing them
using the attached SQL script is rather simple.
[1] https://commitfest.postgresql.org/action/patch_view?id=1652
At first I thought there's some rare hidden memory leak, but I'm pretty
sure that's not the case. I've even put some explicit counters into
aset.c counting allocated/freed blocks, and it seems to be working just
fine (and matching the context tree perfectly). So no memory leak.
Doesn't this line:
TopMemoryContext: 136614192 total in 16678 blocks; 136005936 free (500017
chunks); 608256 used
look pretty suspicious?
cheers
andrew
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