Date: Mon, 1 Apr 96 13:02:49 MET DST From: Greg Lehey <lehey.pad@sni.de> To: joerg_wunsch@uriah.heep.sax.de Cc: freebsd-hackers@freebsd.org Subject: Virtual Memory system (was: Interesting IDE perf results) Message-ID: <199604010933.LAA02889@nixpbe.pdb.sni.de> In-Reply-To: <199603280941.KAA24152@uriah.heep.sax.de>; from "J Wunsch" at Mar 28, 96 10:41 am
next in thread | previous in thread | raw e-mail | index | archive | help
> > As Joe Greco wrote: > >> Yeah, I'm sending him a 386sx/16 with 3MB RAM and a 40MB hard disk. :-) > > 2 MB, 2 MB! > > (I've once got it almost running in 2 MB, but this was prior to > David's fix of the ``mb_map full'' problem. Perhaps i should try > again.) On an allied subject, I get the impression that the current VM system wastes a fair amount of memory. I have a window which displays the current vmstat statistics every 5 seconds, and I can't recall ever having seen less than 3 MB free (this is on a 32 MB system). BSD/386 will go down to 200 kB before starting to page furiously. Obviously it makes some sense not to take free memory down too low, but isn't it possible that the current tuning errs a bit too much on the side of free memory? Greg
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199604010933.LAA02889>