How to reduce ram usage on server?

Hi i run a 20 slot server which aprently to fragnet.net is ment to run 30 slots but however since i run a variety of plugins i compensated for this and reduced the slots however when say we have 15 people join and then say 5 people leave and we then have 10 the ram dont drop at all.

Shouldnt it drop? or am i missing something ive check the logs and cleared and fixed the [Serve] errors from upgrading to 1.0, infact this only started really being a problem in 1.0 and im on build 1519.

Any ideas how i can reduce my ram usage or cure this problem without losing plugins as it means alot of restarts which i dont really wanna do apart from once a day at a specific time so regular users expect it.

 

turn view distance down to like 6 in server.props you should see a drop in startup memory and per player.

 

Ahh brillaint thank you, anything else that can reduce ram as tbh 1.0 has a memory leak somewhere for sure

 

try deleting some of the more 'ram consuming' plugins.

 

thats the thing tho all the plugins i have play a vital role in keeping the server fun :/ and running tbh

 

This is what I am asking myself, too. If I have many people on my server its ok if the ram usage goes up. But when the people leave, why does bukkit not free ram anymore? Especially when there is nobody on the server I would expect ram usage to go down at least a little bit.
Is there some trick I am missing or is bukkit really not freeing allocated ram when it is not used anymore?

 

I use 1529, and ram keep going up and end by making lags. 2Mo ram 3 player. It never free ram. I use ptweak plugin so it's a little better..

 

Answer to your question, no. Ram should not drop. From my experience people are more CPU incentive, cpu useage should go down. Ram is used for map, mob locations, plugins and so on.


Good tips:
Something that I use to help with lag is revising your minecraft.sh script. Most people only look at the -Xmx option. There are many others. Here is the one I use for all my servers. java -server -XXarallelGCThreads=[amount of cores] -Xincgc -Xmx[ram]G -jar [CB jar name].jar nogui.

Next i would tone down plugins. You need to see if you have plugins in that can he handled with others. EX: Many people used Infchests when they had essentials, many didnt know about essentials free signs.