[pups] Progress on 2.11BSD kernel
Steven M. Schultz
sms at 2BSD.COM
Thu Mar 20 05:09:58 AEST 2003
> From: David Evans <dfevans at bbcr.uwaterloo.ca>
> I recall cranking MAXUSERS up a little, though I can't remember to
Good Idea because the default is only suitable for single user mode
and building a new/custom kernel. Quite a few kernel tables
are sized based on 'maxusers' - in particular the coremap and swapmap
tables (which track the fragments of memory and swap space) will be
exhausted easily if you bring up a network'd kernel and start up
the various daemons.
> what and my PDP-11 is turned off at the monent. A clarification of
> how the whole Unibus map register business effects Qbus-based systems
> would be nice.
It really doesn't - not having UMRs to deal with is a Nice Thing about
the Qbus ;) The kernel (and the standalone utilities of course)
need to know if they're on a U or Q-bus system but once a Q system
is found then the UMR handling is bypassed.
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