it seems e94568ecc10 has a pretty bad memory leak. A simple

   pgbench -i -s 300

allocates ~32GB of memory before it fails

   set primary keys...
   ERROR:  out of memory
   DETAIL:  Failed on request of size 134184960.

The relevant bit from the memory context stats:

TupleSort main: 33278738504 total in 263 blocks; 78848 free (23 chunks);
33278659656 used


Tomas Vondra                  http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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