Subject: Re: uvm
To: Warner Losh <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 02/06/2000 18:06:57
On Sun, 06 Feb 2000 17:59:56 -0700
Warner Losh <firstname.lastname@example.org> wrote:
> Do you know what difference it made for, say, building the world on
> these machines?
Honestly, I never ran that comparison. I was mostly interested in making
it work at the time.
However, UVM was a significant win for every other platform in the tree
(most noticeable on VAX -- shaved 10 seconds off runnning /etc/rc on
a uVAX II) ... and given the additional improvements (like e.g.
eliminating double faults on systems where modified/reference information
is emulated, like the MIPS, and utilizing KSEG for certain kernel memory
pools to greatly reduce TLB usage), I would suspect that the MIPS benefitted
from UVM as well.
-- Jason R. Thorpe <email@example.com>