Out of Memory on Linux min read


Linux will kill processes using a lot of memory when the amount of free memory on the system is too low. MemSQL is often the target process killed. To check if MemSQL was killed by Linux as a result of the system running out of memory, run:

$ dmesg | grep -i "out of memory"

If the server has rebooted since MemSQL was killed, you can find the logs from the last boot by running:

$ cat /var/log/kern.log

Linux can be configured to disable this behaviour by changing the setting of vm.overcommit_memory or vm.overcommit_ratio, but this is not recommended. It is safer to configure MemSQL to use less memory by setting maximum_memory to a lower value.