From: alex@laos (Alex D. Nghiem)
Newsgroups: comp.sys.next.misc
Subject: Adding more buffers: how much more? GUI's slowness under 3.0?
Date: 13 Oct 92 21:55:27 GMT
Reply-To: alex@pencom.com
Organization: Pencom Software

In article <1992Oct9.210049.28177@eng.ufl.edu> pgriffin@uful07.phys.ufl.edu  
(Paul A. Griffin) writes:
> In article <BvuzAH.9s.2@cs.cmu.edu> ddj+@cs.cmu.edu (Doug DeJulio) writes:
> >In article <1992Oct9.032553.26343@eng.ufl.edu> pgriffin@uful07.phys.ufl.edu 
> >(Paul A. Griffin) writes:
> >>c. If it is a bug, is there a simple fix that an end user, or system
> >>administator can implement?  Does NeXT plan on releasing the bug fix
> >>before 3.1 arrives?
> >
> >Yes, I think so.  Boot with more buffers.  This makes a HUGE
> >difference.  Before increasing the number of buffers, my NeXTstation
> >mono (25MHz) cralwed with 3.0.  Now it doesn't seem like it's slower
> >than 2.1 to me (subjective, might be because of the way I use it).
> >-- 
> >Doug DeJulio
> >ddj+@cmu.edu
> 
> It's nice to know that there is a way of speeding up the 3.0 GUI 
> by increasing the number of buffers, and baring any better solution,
> that is what I will do when my cdrom/3.0 upgrade arrives in late December.
> 
> But is that the root of the problem? Namely, that the number of buffers 
> initially alocated by 3.0 is less than the number alocated by 2.x?  
> If so, then it's a simple bug to fix.  
> 
> There could be other explainations.  From reading complaints on the net,
> my best guesses are that the problem arises from one of the following:
> 1. Workspace Manager might be much larger in 3.0 than 2.x, and require more
>    real memory when moving windows around, etc.  On my 2.1 machine 
>    Workspace Manager asks for about 20 mb of (mostly virtual) memory.
> 2. Workspace Manager is slower because of a new feature, like distributed
>    objects.
> 3. Workspace Manager has a bug.
> 4. NeXT also has added compressed paging and/or swapping.  Maybe the 
>    memory management is slower in 3.0 than in 2.x, due to a bug or
>    the implementation of compression. 
> 
> I also noticed a number of people claiming that the two pre-release
> versions of 3.0 had snappier window management than the final 
> public version.  This makes the problem sound like a bug fix that 
> in turn generated a new bug!
> 
> -- 
> Paul A. Griffin                Phone: (904)-392-5712 
> Department of Physics          Fax: (904)-392-0524
> University of Florida          E-mail: pgriffin@uful07.phys.ufl.edu
> Gainesville, FL, 32611	       (ASCII text e-mail only)


Excuse my ignorance, but can someone explain how to specify more buffers for  
bootup?  Additionally, how many more buffers should I specify?  Obviously, I'm  
not a sysadmin.


Best regards,


Alex Duong Nghiem          Phone: (512) 343-1111
Pencom Software            Fax:   (512) 343-9650    
9050 Capital of TX Hwy N.  Mail:  alex@pencom.com
Suite 300                  Mail:  co-Xist_support@pencom.com
Austin, TX 78759           Mail:  co-Xist_info@pencom.com
USA
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