On Tue, 3 Apr 2001, Frank van der Linden wrote:

> The UBC + interactive performance thing came up again in some internal
> discussion recently, but this is a better place for it.
> 
> First of all, there still seem to be some complains about bad
> interactive performance (i.e. program ("text") pages being
> paged out because they're being claimed for data).

[snip]

> Lastly, I believe that another problem was that shared libraries
> are treated the same as 'normal' data files. Not sure what to
> do there, maybe a heuristic that prefers keeps r-x mapped pages?

I'd like to add another item to this list - the swap system. I've seem
machines just seem to hang when exiting a process, as have others. The
problem seems to be the extent map used to keep track of swap usage. How
can we fix this?

Take care,

Bill