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SubjectRe: vmscan logic improvement, feedback wanted
On Fri, 6 Mar 1998, David Woodhouse wrote:

>
> H.H.vanRiel@fys.ruu.nl said:
> > so far, I've had one succes story with the patch I posted a few hours
> > ago. It showed a huge performance improvement over systems without my
> > patch.
>
> I'd second that. However, it's still drastically worse than 2.1.88 was.
>
> This is a 64Mb dual Pentium machine, and when it starts paging, it still
> just locks up for five or ten seconds at a time, and the load hits about eight.

It's in the free_memory_available() test. It's next to
impossible to get a free 128k area from random swapping,
so kswapd swaps up to 1/3rd of total memory at once :-(

Rik.
+-----------------------------+------------------------------+
| For Linux mm-patches, go to | "I'm busy managing memory.." |
| my homepage (via LinuxHQ). | H.H.vanRiel@fys.ruu.nl |
| ...submissions welcome... | http://www.fys.ruu.nl/~riel/ |
+-----------------------------+------------------------------+


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