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My Centos 7 Server takes from 160Mb to 2Gb Ram after 3,4 idle hours without any applications or services running, See htop response for more detail Htop Response . Whenever I start my apps (elasticsearch 1.4Gb and Spring Java app 300Mb) with early state 160Mb Ram. At first it shows 1.9Gb, after 1 day, it becomes 3.4/3.7, CPU 1 - 10%, very slow and unresponsive for almost actions. Some topics says that it's for caching file system, but maybe something is wrong here. Please give me some suggestions.
[ngocchien@localhost ~]$ free -m
total used free shared buff/cache available
Mem: 3792 1968 1572 24 250 1609
Swap: 0 0
what does
top
/htop
show? – jeremysprofile – 2018-08-01T15:01:49.787Please see the link "Htop Response" in the question. My account has not yet permitted to attach an image. – ngocchien – 2018-08-01T17:37:58.013