Hi.. I am curious to know how unix define memory usage. When I type "free" or top, I saw the used
memory is so much as shown below. But my server is actually idle. In the top's process show that
the highest memory usage process is only taking up 0.5%. why? the Free command shows used memory
is so much?
[root@wat]# free
total used free shared buffers cached
Mem: 1027344 922496 104848 0 124304 589148
-/+ buffers/cache: 209044 818300
Swap: 2031608 0 2031608
Besides, I heard from my friend that there is a method to allocate memory for different process.
For example 30% for apache and 40% for tomcat. Is that true? How to do it?
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