How to optimize the usage of CPU, RAM in Centos

[dhanupreeth]

Hi,

I have setup in AWS cloud with Centos, and its running fine for me, but sometimes I have message like insufficient memory to process the java file, anyone can help me to optimize the CPU, RAM in Centos

a) How to get the CPU Usage
b) How to kill unwanted Process in centos
c) How to reduce the RAM memory on the fly

Note: used new relic to monitor the instance, but not satisfied, Please advice thanks

[raghuu]

Hi

How to reduce the RAM memory on the fly

fallow the below link

http://www.tecmint.com/clear-ram-memory-cache-buffer-and-swap-space-on-linux/

How to kill unwanted Process in centos

fallow the below article

Close all applications at a time

is there any way to close all opened applications at a time? For example whenever i shutdown my system, i need to close each application at each time. It is wasting of my time. Is there any command/script is available for to do the task? Any one have any idea about that?

How to get the CPU Usage

you can get cpu load by using the monitoring commands like

#top
#w
uptime