Hello!

I was monitoring the VmSize and Vmrss through KDE System Guard and tried an experiment to swapoff my virtual memory. I would assume that the Vmrss would become the same value as VmSize, since there is no more shared memory for the entire system to reside on and would accordingly all be put into the physical memory (ie. Vmrss). However, when I checked the VmSize versus Vmrss, Vmrss was still only a chunk of the Vmsize value.

Can someone explain to me why the physical memory stays the same even I disable the swap drive.

(I am using Ubuntu, so maybe it has its own secondary swap memory I am not aware of)

Thanks,
Murdock

VMRss only measures the amount of RAM actually in use by programs (the so-called Resident Set Size). Take a look at this page for details on the various memory statistics: http://www.linuxdevcenter.com/pub/a/...of-memory.html