Ken Wellsch <kwellsch@tampabay.rr.com> writes:

> What I've been seeing is that after a certain period of time, with something
> like a tar unpacking a large tar.gz bundle (e.g. pkgsrc.tar.gz), that UBC
> or someone, is merrily consuming *all* available memory and leading to
> quiet processes getting swapped out. Thus after running something consumptive
> like that for several minutes, getting response from your shell or some
> other activity that hasn't been active for a while, is delayed until
> it can get some resources back.

I used to get that, to the point that I was seriously considering
backing down to 1.5. But then a few weeks ago the UBC stuff was given
a tuneup in the form of setting maximums for certain types of memory
usage, and now my system performs wonderfully - no more
several-second-pauses when I switch to an emacs sessions while a long
tar operation is running.

Are you completely up to date?