Hi Pierre, On 02/26/2014 12:37 AM, Pierre Malard wrote:
localu@nuage:~# free -h total used free shared buffers cached Mem: 4,0G 3,7G 279M 0B 395M 1,8G -/+ buffers/cache: 1,5G 2,5G Swap: 1,0G 7,1M 1,0Gbut, elsewere, if 5 users needs 1,5 Gb RAM, what about needed RAM for 50?
it doesn't mean that all of that RAM is used for Apache. There are countless tools to measure RAM usage, but for a quick look, e.g. this script can be helpful (it just presents some values from proc): https://raw.github.com/pixelb/ps_mem/master/ps_mem.py Run it once with apache running and once without, and compare it to the output of free (column used - cached).
Did you already disable all unused services in your distribution? Is this a minimal server install or a full-fledged installation? Did you already disable all unused modules in apache2? Some distributions come with mod_python, etc. pp. activated, which is useless if you only host Owncloud. You should also check your mpm parameters.
What about mysql, have you checked the configuration (table buffers, join buffers, caches, etc.).
There are too many factors that influence this to give a rule of thumb imho. Greetings André
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