Re: [gentoo-user] pf-sources Kernel

Re: [gentoo-user] pf-sources Kernel

[Alex Schuster]

James writes:

> Anyone running pf-sources?
> 
> AMD64?

Yes! Since two hours after I read your posting, never heard before of pf-
sources or BFS before.
And they run great! My system was somewhat unresponsive, especially when 
things like emerges were going on, video playback was stuttering, sometimes 
Amarok did this, too. Now, it's no problem any more. Well, activating Strigi 
desktop indexing and Nepomuk still slows things down, though.

> Your insights and experiences are most welcome,
> including your opinion of BFS...

It rocks!
But then, I have been running ck-sources before. And they also have the BFS 
patch. And it has been set in my .config. So, I should already have seen the 
benefits all the time.

Maybe this is all wishful thinking only? The system already performs much, 
much better since I added another 2G of RAM one week ago. Now I have 8G, and 
do not notice that much swapping any more. Although... right now,  swap is 
at 600M, and the system is swapping right now. Weird. I'm running rdiff-
backup, this seems to increase swap size. Maybe too much of the stuff it 
precesses is being cached? Swap is at 800M now.

	Wonko

[gentoo-user] Re: pf-sources Kernel

[Nikos Chantziaras]

On 05/25/2011 03:12 PM, Alex Schuster wrote:
> [...] Now I have 8G, and
> do not notice that much swapping any more. Although... right now,  swap is
> at 600M, and the system is swapping right now. Weird. I'm running rdiff-
> backup, this seems to increase swap size. Maybe too much of the stuff it
> precesses is being cached? Swap is at 800M now.

You can tweak this in /etc/sysctl.conf:

   vm.swappiness = 30

Or maybe 20.  The default is 60.  IMO way too high for desktop systems.

Swap performance (was: Re: [gentoo-user] Re: pf-sources Kernel)

[Alex Schuster]

Nikos Chantziaras writes:

> On 05/25/2011 03:12 PM, Alex Schuster wrote:
> > [...] Now I have 8G, and
> > do not notice that much swapping any more. Although... right now,  swap
> > is at 600M, and the system is swapping right now. Weird. I'm running
> > rdiff- backup, this seems to increase swap size. Maybe too much of the
> > stuff it precesses is being cached? Swap is at 800M now.
> 
> You can tweak this in /etc/sysctl.conf:
> 
>    vm.swappiness = 30
> 
> Or maybe 20.  The default is 60.  IMO way too high for desktop systems.

Good idea, but I'm using 20 already.

I'll start another thread about this.

	Wonko