memory problem

[ridzuan]

hye,

i need assist regarding to my direct admin,


problem: my memory went too low, from 12GB of ram only 4GB are free. How to check this problem and what is the solution?

DELL R420
12GB of RAM
4x400GB intel SSD



TQVM

 

[Themis]

problem: my memory went too low...

Linux uses all available memory but it is freed when an application or service requires so.
If you use Ubuntu check swappiness with

cat /proc/sys/vm/swappiness

If it is too low (e.g. 10) this means that your system uses more memory and less swap.
You can change it to 60 with:

echo 60 > /proc/sys/vm/swapiness

To free pagecache:

echo 1 > /proc/sys/vm/drop_caches

To free dentries and inodes:

echo 2 > /proc/sys/vm/drop_caches

To free pagecache, dentries and inodes:

echo 3 > /proc/sys/vm/drop_caches

 

[Cliff Spark]

You sure it's not "cached" ?

 

[nobaloney]

See this page: Linux ate my RAM (linuxatemyram.com).

Jeff

 

[paisley]

Login Directadmin -> Process Monitor -> What commands use most RAM ?