Ram defrag in UBUNTU

[Anthony M. Rasat]

Melissa Lane wrote:
>Just wondering if anyone knew how to defrag the RAM or knew of >a program that works in UBUNTU to defrag RAM.

Ubuntu is using Linux kernel and as far as I know there are none programs to defragmented RAM. Or you need one.

If I remember correctly, RAM when unused works as file cache buffer which immediately released whenever the boss - kernel - need additional RAM.

So unlike in Windows where DLLs preloaded in RAM when unused, Linux kernel only cache *any* file in buffer cache, not specifically libraries.

But like in Windows, Linux loves big RAM and performance usually suffer if RAM is insufficient. For example, I have a web server that once have a crawling speed, sprung to life immediately after I added more RAM to 1GB.

So how much RAM do you need for Ubuntu desktop? As of 2009 I would say 1GB is almost minimum, 2GB is OK, 4GB is ideal, 8GB is too much but not overkill. Remember, you may need to change Ubuntu edition to 64-bit edition once you have over 3GB RAM, if your processor permit it.

Hope that helps.

Regards,

Anthony M. Rasat
Manager - Technical, Network and Support Division
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