Alvaro Herrera <alvherre@xxxxxxxxxxxxxx> writes: > Jorge Daniel wrote: >> Hi guys , I'm dealing with OOM killing on Postgresql 9.4.8 running on docker , > What is your statistics target? analyze is supposed to acquire samples > of the data, not the whole table ... >> pgbench=# analyze verbose pgbench_accounts; >> INFO: analyzing "public.pgbench_accounts" >> INFO: "pgbench_accounts": scanned 1639345 of 1639345 pages, containing 100000000 live rows and 0 dead rows; 3000000 rows in sample, 100000000 estimated total rows The standard setting of default_statistics_target would only result in trying to acquire a 30000-row sample, so the problem here is having cranked that up beyond what the machine can sustain. AFAIR we do not consider maintenance_work_mem as imposing a limit on the sample size. regards, tom lane
