Lampson/Thacker to do Dynabook?

Bruce ONeel beoneel at mindspring.com
Sun Sep 12 13:38:16 UTC 1999


Hi,
  Thanks for the explanation.  I'm debating on what to replace my current powerbook 
with and a linux laptop is high on the list. 

cheers

bruce

"Raab, Andreas" <Andreas.Raab at disney.com> wrote:
> Yeah - for one thing it does byte-reverse all the forms on the fly (which is
> really painful on a slow machine with a small L2 cache). But what should
> help is setting Squeak to 8bit depth. This should be much faster than any
> other combination (though it is best if the display driver is set to 8bit as
> well). Also, display operations depend *heavily* on the quality of your
> graphics driver - I have seen differences up to a factor of three between MS
> standard drivers vs. vendor provided drivers (though I've found that Win98
> has a better set of drivers coming along with it).
> 
> [BTW, another thing is that the interpreter is clearly optimized towards
> processors having lots of registers (and Intel processors don't) the effects
> of which you can see if you compare the raw bytecode/send speed]
> 
>   Andreas
> --
> +===== Andreas Raab ========= (andreasr at wdi.disney.com) ==+
> | Walt Disney Imagineering        Phone: +1 818 544 5016  I
> I Glendale, CA                    Fax:   +1 818 544 4544  I
> +======< http://isgwww.cs.uni-magdeburg.de/~raab >========+
> 
> 
> > ----------
> > From: 	Bruce ONeel
> > Reply To: 	squeak at cs.uiuc.edu
> > Sent: 	Friday, September 10, 1999 5:29 AM
> > To: 	squeak at cs.uiuc.edu
> > Cc: 	recipient list not shown
> > Subject: 	Re: Lampson/Thacker to do Dynabook?
> > 
> > Bob Arning <arning at charm.net> wrote:
> > > On Thu, 9 Sep 1999 19:16:14 EDT JArchibald at aol.com wrote:
> > > >Similarly, on a Pentium 133 Thinkpad, I find Morphic too slow to
> > reasonably 
> > > >experiment with.
> > > 
> > > Isn't that interesting: on a 120 MHz PowerMac, I quite happily stayed in
> > Morphic unless it was absolutely necessary to revert to MVC.
> > 
> > This is very interesting...  My Powerbook 500 which has a 100mhz PPC is
> > quite nice in
> > morphic.  No cache either.   Squeak must do something which is painful on
> > a Pentium
> > and not so painful on a PPC.   There has been some chatter about this over
> > time.
> > 
> > cheers
> > 
> > bruce
> >





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