Re: [uPATCH] small kswapd improvement ???

["Dr. Werner Fink" <werner@suse.de>]

> > > vmscan.c. Back then a simple bug was encountered and 'fixed'
> > > by always starting the memory scan at adress 0, which gives
> > > a highly unfair and inefficient aging process.
> > 
> > Ouch --- I wonder how much this is hurting 2.0.33.  I think I'll have
> > to try that, and perhaps look at this for 2.0.34/LMP... 
> 
> It doesn't hurt _that_ much... Otherwise we wouldn't
> have left it in the swapper code for three years :-)

Maybe that's the reason why the bigger initial age for swapped in pages gives
an improvement in 2.0.33 ... it's a ``better protection'' for often needed
pages.


          Werner