system uses too much memory

[just_hoster]

so, i have Debian X64 system with 4 GB ram.

ispcp 1.0.3 installed. traffic about 60 GB a day.

system uses all memory. TOP doesnt show me which process uses so much memory.

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
18013 mysql 20 0 162m 44m 5212 S 7 1.1 0:35.19 mysqld
17906 vu2002 20 0 192m 11m 6616 R 5 0.3 0:05.64 php5-cgi
19516 www-data 20 0 398m 11m 1528 S 3 0.3 0:00.64 apache2
19458 www-data 20 0 418m 14m 1872 S 1 0.4 0:01.06 apache2


mysql uses only 1% what can use other 99?

to release memory i must reboot computer.... restarting mysql or apache doesnt make effect


thanks

[kilburn]

post us the output of "free -m"

[just_hoster]

server1:~# free -m
total used free shared buffers cached
Mem: 3967 3898 69 0 146 3146
-/+ buffers/cache: 604 3362
Swap: 9577 0 9577
server1:~#

[kilburn]

Now repeat with me: free ram is not useful for anything, so I'm happy that the kernel uses it for caching and buffering purposes.

hint: read and understand the "-/+ buffers/cache" line, where it says that you actually have 3362mb of free ram that is being used by the kernel for buffering and/or caching purposes. If/when some program needs it, the kernel will happily handle it the necessary amount of ram.

It's standard linux behaviour regarding memory usage, and it's actually GOOD for you.

[just_hoster]

(01-28-2010 06:12 PM)kilburn Wrote:  Now repeat with me: free ram is not useful for anything, so I'm happy that the kernel uses it for caching and buffering purposes.

hint: read and understand the "-/+ buffers/cache" line, where it says that you actually have 3362mb of free ram that is being used by the kernel for buffering and/or caching purposes. If/when some program needs it, the kernel will happily handle it the necessary amount of ram.

It's standard linux behaviour regarding memory usage, and it's actually GOOD for you.

ah, now its clear for me. sorry, i started using linux systems about 1 month ago and i'm in a process of learning.

so it means that everything is all right

thanks