Re: Plain 2.4.5 VM...

Mike Galbraith
2001-05-29T06:07:02Z

On Tue, 29 May 2001, Jeff Garzik wrote:

> > On Tuesday 29 May 2001 00:10, Jakob Østergaard wrote:
> >
> > > > > Mem: 381608K av, 248504K used, 133104K free, 0K shrd, 192K
> > > > > buff
> > > > > Swap: 255608K av, 255608K used, 0K free 215744K
> > > > > cached
> > > > >
> > > > > Vanilla 2.4.5 VM.
> >
> > > It's not a bug. It's a feature. It only breaks systems that are run with
> > > "too little" swap, and the only difference from 2.2 till now is, that the
> > > definition of "too little" changed.
>
> I am surprised as many people as this are missing,
>
> * when you have an active process using ~300M of VM, in a ~380M machine,
> 2/3 of the machine's RAM should -not- be soaked up by cache

Emphatic yes. We went from cache collapse to cache bloat. IMHO, the
bugfix for collapse exposed other problems. I posted a patch which
I believe demonstrated that pretty well. (i also bet Rik a virtual
beer that folks would knock on his mailbox when 2.4.5 was released.
please cc him somebody.. i want my brewski;)

-Mike