Subject: Re: FreeBSD Bus DMA
To: None <>
From: Matthew Jacob <>
List: tech-kern
Date: 06/12/1998 14:06:10
John S. Dyson wrote:
> To me, a machine with 256MB is very desirable, because FreeBSD
> makes very effective use of the memory.  I really forget
> what the effect of memory is on NetBSD (both MACH and UVM),
> but I suspect that it doesn't help very much (only to cache
> programs.)

Really? Well, NASA/AMES has several machines with > 256MB memory
a couple 8200's with 2GB)- seems to make some things a lot better,
but to be honest I haven't actually done real benchmarks on them to
see what the actual effects are. Mostly what we're trying to see is
the effects of 64k and larger blocksizes. Seems to help to have the
larger memory- but that's just a 'feel' for it.