Out Memory Error Postgresql
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Join them; it only takes a minute: Sign up ERROR: out of memory on machine with 32GB RAM and without swap file up vote 2 down vote favorite 1 I'm running postgresql 9.3 on a machine with 32GB ram,
Psycopg2 Databaseerror Out Of Memory For Query Result
with 0 swap. There are up to 200 clients connected. There's 1 other 4GB process running on the box. How do I interpret this error log message? How can I prevent the out of memory error? Allow swapping? Add more memory to the machine? Allow fewer client connections? Adjust a setting? example pg_top: last pid: 6607; load avg: 3.59, 2.32, 2.61; up 16+09:17:29 20:49:51 113 processes: 1 running, 111 sleeping, 1 uninterruptable CPU states: 22.5% user, 0.0% nice, postgres show work_mem 4.9% system, 63.2% idle, 9.4% iowait Memory: 29G used, 186M free, 7648K buffers, 23G cached DB activity: 2479 tps, 1 rollbs/s, 217 buffer r/s, 99 hit%, 11994 row r/s, 3820 row w/s DB I/O: 0 reads/s, 0 KB/s, 0 writes/s, 0 KB/s DB disk: 149.8 GB total, 46.7 GB free (68% used) Swap: example top showing the only other significant 4GB process on the box: top - 21:05:09 up 16 days, 9:32, 2 users, load average: 2.73, 2.91, 2.88 Tasks: 247 total, 3 running, 244 sleeping, 0 stopped, 0 zombie %Cpu(s): 22.1 us, 4.1 sy, 0.0 ni, 62.9 id, 9.8 wa, 0.0 hi, 0.7 si, 0.3 st KiB Mem: 30827220 total, 30642584 used, 184636 free, 7292 buffers KiB Swap: 0 total, 0 used, 0 free. 23449636 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 7407 postgres 20 0 7604928 10172 7932 S 29.6 0.0 2:51.27 postgres 10469 postgres 20 0 7617716 176032 160328 R 11.6 0.6 0:01.48 postgres 10211 postgres 20 0 7630352 237736 208704 S 10.6 0.8 0:03.64 postgres 18202 elastic+ 20 0 8726984 4.223g 4248 S 9.6 14.4 883:06.79 java 9711 postgres 20 0 7619500 354188 335856 S 7.0 1.1 0:08.03 postgres 3638 postgres 20 0 7634552 1.162g 1.127g S 6.6 4.0 0:50.42 postgres postgresql.conf: max_connections = 1000 # (change requires restart) shared_buffers = 7GB # min 128kB work_mem = 40MB # min 64kB maintenance_w
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Work_mem Postgres
have Meta Discuss the workings and policies of this site About postgres memory usage Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads pg_restore out of memory with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million http://stackoverflow.com/questions/26478031/error-out-of-memory-on-machine-with-32gb-ram-and-without-swap-file programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Postgres gets out of memory errors despite having plenty of free memory up vote 11 down vote favorite 2 I have a server running Postgres 9.1.15. The server has 2GB of RAM and no swap. Intermittently Postgres will start getting http://stackoverflow.com/questions/29485644/postgres-gets-out-of-memory-errors-despite-having-plenty-of-free-memory "out of memory" errors on some SELECTs, and will continue doing so until I restart Postgres or some of the clients that are connected to it. What's weird is that when this happens, free still reports over 500MB of free memory. select version();: PostgreSQL 9.1.15 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, 64-bit uname -a: Linux db 3.2.0-23-virtual #36-Ubuntu SMP Tue Apr 10 22:29:03 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Postgresql.conf (everything else is commented out/default): max_connections = 100 shared_buffers = 500MB work_mem = 2000kB maintenance_work_mem = 128MB wal_buffers = 16MB checkpoint_segments = 32 checkpoint_completion_target = 0.9 random_page_cost = 2.0 effective_cache_size = 1000MB default_statistics_target = 100 log_temp_files = 0 I got these values from pgtune (I chose "mixed type of applications") and have been fiddling with them based on what I've read, without making much real progress. At the moment there's 68 connections, which is a typical number (I'm not using pgbouncer or any other connection poolers yet). /etc/sysctl.conf: kernel.shmmax=1050451968 kernel.shmall=256458 vm.overcommit_ratio=100 vm.overco
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