Re: [MLUG] Physical RAM vs. Swap RAM

[Michael <EMAIL:PROTECTED>]

Having to much swap space combined w/ a slow or busy hdd can slow things
down nicely though. If you want a lot of swap space it can be useful to
buy a cheap second controller and small hdd and use that hdd just for
swapping. I've seen some pretty fast boxes slowed way down just because
the swap space was much bigger than it needed to be.

I guess my general rules is swap should be about twice the physical RAM
but no more than 128Mb and preferably around 64Mb.. somewhat depends on
your needs and hdd speed. Is much better to add more RAM. :)

*^*^*^*
Have the courage to take your own thoughts seriously, for they will shape
you. -- Albert Einstein

On Wed, 31 Jan 2001, Igor Izyumin Jr. wrote:

> > Does anyone know what determines which items go to phyiscal RAM and what
> > goes to Swap space in Linux? I'm running a machine with 196 MB RAM, and
> > obviously I want everything there instead of my Swap space.
> Contrary to what many windoze users believe, the swap space isn't for running 
> programs slowly even when RAM is available.  It is used for many internal 
> things, in addition to the memory.  It does not replace the memory.  Unless 
> you have a very slow hard drive that eats up a lot of CPU time, there is no 
> need to worry.  By the way, I suggest checking your hdparm settings for IDE 
> hard drives.  They are often not optimized, and will cause more strain on the 
> CPU than they should.  There is a howto somewhere on how to optimize them.
> -- 
> -- Igor
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