FC2 v's FC1: memory handling

[Satish Balay]

On Wed, 2 Jun 2004, Marc Lucke wrote:

> Anecdotally it seems that FC2 will do everything it can to avoid paging to 
> the hard disk whereas FC1 was quite happy to go on chewing up hard drive 
> until the proverbial cows come home.  However performance seems to suffer - 
> my sendmail process now takes so long to answer when my hard disk is under 
> heavy load and I am beginning to suspect that the system's paging routines 
> might have something to do with this.  In FC1, 1GB of RAM did not seem to be 
> enough, in FC2 no matter what I'm doing it won't use any more than about 
> 2-300k!
>
> I think this may be a kernel thing, but any comments?

Try:
echo 100 > /proc/sys/vm/swappiness

Checkout:
http://kerneltrap.org/node/view/3000

Satish