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--- swap:clear_swap [2017/04/03 15:43] – created peter
+++ swap:clear_swap [2019/12/04 21:41] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Swap - Clear swap ======
-Check your swap usage:
-<code bash>
-free -m
-                    total       used       free     shared    buffers     cached
-Mem:          1024        157        866          0         11         48
--/+ buffers/cache:         97        926
-Swap:          127         95         32
-</code>
-where
-  * **-m** is for the value to be listed in megabytes.
-To clear the swap:
-<code bash>
-sync && /sbin/sysctl vm.drop_caches=3 && swapoff -a && swapon -a
-</code>
-where
-  * **sync** is to force changed blocks to disk and update the super block;
-  * **sysctl vm.drop_caches=3** is to free pagecache, dentries and inodes;
-  * **swapoff** is to turn off swap;
-  * **swapon** is to turn swap back on.
-Check the swap again:
-<code bash>
-free -m
-                    total       used       free     shared    buffers     cached
-Mem:          1024        157        866          0         11         48
--/+ buffers/cache:         97        926
-Swap:          127         0         127
-</code>