Subject: Re: VM trace tool
To: None <tech-kern@NetBSD.ORG, email@example.com>
From: Mike Hibler <firstname.lastname@example.org>
Date: 06/17/1995 21:09:19
> From: VaX#n8 <email@example.com>
> Subject: VM trace tool
> To: firstname.lastname@example.org
> Date: Sat, 17 Jun 1995 02:40:37 -0500 (CDT)
> Also, I've heard:
> > It's mostly the Mach 2.5 VM system, with some changes from Mach 3.0
> However, it appears to still use a (pagedaemon) process, which makes me
> think it's a little older. Does it support external pagers? I was told
> this would be a good way to support CVM, and would require less hacking
> to the kernel.
Mach 2.5 and 3.0 still have a pageout daemon. In 3.0 and maybe 2.5 it
is not a separate task (process) but it is still a dedicated thread.
But you are right, it is derived from Mach 2.0 with changes from both
2.5 and 3.0. It does not support external pagers.