Testing the efficiency of the memory system part of linux
 

I have applied a patch in linux kernel version-2.6.31(fedora core 12)source code.
Now I want to check whether the performance of the memory management part has been enhanced. So how to test the efficiency of this new modified code?
Plz help me out!!!!

I would recommend you to start with these tools:

vmstat => Monitor virtual memory
free Display amount of free and used memory in the system.

pmap => Display/examine memory map and libraries (so).
Usage: pmap pid

top Show top processes

sar -B Show statistics on page swapping.

time -v date Show system page size, page faults, etc of a process during execution.
Note you must fully qualify the command as "/usr/bin/time" to avoid using the bash shell command "time".

cat /proc/sys/vm/freepages Display virtual memory "free pages".

One may increase/decrease this limit: echo 300 400 500 > /proc/sys/vm/freepages

cat /proc/meminfo Show memory size and usage.