hi every body.
our site sometimes get slow and users can't login to easily. I have installed munin for monitoring the server. one thing that confused me is the graph of memory usage.
our server has only 4G RAM but in this graph I see "comitted" that go beyond the 5G.
actually I don't know what is "comitted" means.
please at first interpret the graph that is attached to this post ,then tell me if increasing the amount of RAM can resolve the occasionally slowness of the site.
It just means the memory that would be used if evrything that had been allocated was actually used.
Fuller explanation here:
http://www.redhat.com/advice/tips/meminfo.html
My understanding is that it's swap you really have to watch. As soon as your memory goes onto disk it's game over. Compared to similar graphs from my servers it looks like you are somewhat over capacity on your server. More memory and/or split the db server onto a different box is a relative pain free way to increase performance.
Fuller explanation here:
http://www.redhat.com/advice/tips/meminfo.html
My understanding is that it's swap you really have to watch. As soon as your memory goes onto disk it's game over. Compared to similar graphs from my servers it looks like you are somewhat over capacity on your server. More memory and/or split the db server onto a different box is a relative pain free way to increase performance.