If you are running out of swap memory you can add more by creating a swap file on your storage device (hdd or ssd). Swapping to a file is a little less efficient than swapping to a dedicated swap partition as the kernel needs to access the new swap file through the file system. But since this swap file is only called upon when you’ve run out of RAM and then swap memory on a dedicated partition, the additional performance hit is not much compared to that of swapping itself.
Have a look at what memory you have available using free:
total used free shared buff/cache available
Mem: 16028508 3987252 3494292 1043004 8546964 10656712
Swap: 1003516 467112 536404
Here we have 16GB memory and 1GB of swap of which something like 467MB is being used.
The swapon command can also show the swap memory utilisation:
$ swapon --show
NAME TYPE SIZE USED PRIO
/dev/dm-2 partition 980M 456.2M -2
Here we have almost 1GB of swap of which 456MB is being used.
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