Re: [gentoo-user] Very bad system response

["Hemmann, Volker Armin" <volker.armin.hemmann@tu-clausthal.de>]

On Dienstag, 6. Februar 2007, Michael Schreckenbauer wrote:
> Hi,
>
> Am Dienstag, 6. Februar 2007 schrieb Hemmann, Volker Armin:
> > On Dienstag, 6. Februar 2007, Pierre-Yves Rofes wrote:
> > > On Tue, February 6, 2007 9:29 pm, Michael Schreckenbauer wrote:
> > > > From time to time my system comes to a complete halt, that means not
> > > > a single
> > > > application shows any response to mouse and/or keyactions, sshing
> > > > into it takes forever. After a while (up to ~30s ) normal reaction is
> > > > back again. Strange thing is, there is no activity at the times this
> > > > happens. Reading email and browsing the web is all that is needed.
> > > > CPU is at 3-5% according to
> > > > top, mem has ~1GB free according to free.
> > >
> > > Maybe a faulty hard drive with bad sectors that can't be read. Anything
> > > in /var/log/messages or any other log file?
> > >
> > > --
> > > Pierre-Yves Rofes
> >
> > I am not sure that something is 'broken'. His problem is like mine...
> > heavy disk i/o kills performance. And if the box hits swap, everything
> > sucks.... because for some reason, always the wrong stuff is swapped out
> > ;) Really, sometimes, it is like every single bit is fetched individually
> > from the swap space...
>
> I don't think, swap is the cause of this. This system has 1,5GB Ram, swap
> is nearly never touched :)
>
>

swap was only an example. Things that kill performance: big tar, big copy 
around, and everything that touches a lot of files....
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