Subject: Re: Compiler timings on varous MVII NetBSDs etc.
To: None <allisonp@world.std.com>
From: James Lothian <simul8@simul8.demon.co.uk>
List: port-vax
Date: 01/25/2001 19:00:07
allisonp@world.std.com wrote:
> 
> On Tue, 23 Jan 2001, NetBSD Bob wrote:
> 
> > > > >It looks more like a straight PDP-11 V7 port than VAX.  Interesting.
> > > > >Maybe the hacking was not all that substantial, after all!
> > > >
> > > > So do any of the MicroVAX other than the MicroVAX I have full PDP-11
> > > > emulation?
> > >
> > > But you're not thinking about running NetBSD 1.5 on the pdp11 ?
> >
> > Interesting.  My take on it, is that like the PDP11 and the 4M ram
> > limitations, we are reaching a 16mb ram limitation in the old VAXentoyz.
> > I am sensing that gcc may be running out of ram.  Especially in the
> > 25 hour kernel compile arena and the neverending perl compile thicket.
> > Isildur got a kernel compile in 30 minutes on a KA650 box.
> 
> Only the MVII, MS2000 have the 16mb limit.  LAter machines are at least
> capable of 32mb or much more.
> 
> personally I find it ghastly to need more than 16mb to compile reasonably.
> Sound much more like disk flogging (not enough or large enough IO
> buffers?).
> 
> Allison

Erm, the 750 has a 14Mb limit. And most 750s were 8Mb. I know it's not a
microvax, but it's still a vaxentoy, at least as far as I'm concerned!

And you can build a 4.3 kernel on it in about a couple of hours. 

James