No I didn't configured 1.5GB shared memory. For this test I recreated a database cluster and leave everything in the configuration as default. As in the original post, when the connection was first established, the memory usage of backend process showed in top was VIRT = 182MB, RES = 6240K, SHR=4648K while running pgbench memoryusagetest -c 1 -j 1 -T180 -f test.sql I saw the memory climb up rapidly to VIRT = 1661MB RES = 1.5GB SHR = 55MB once the tests is done, the process terminated and the memory returned to OS Samuel -- View this message in context: http://postgresql.1045698.n5.nabble.com/PostgreSQL-backend-process-high-memory-usage-issue-tp4289407p4291691.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
