Re: xmosaic experience (Marc Andreessen)
Date: Thu, 25 Feb 93 15:32:00 -0800
From: (Marc Andreessen)
Message-id: <>
Subject: Re: xmosaic experience 
In-reply-to: <>
References: <>
X-Md4-Signature: 5d58570d33b7897760cfe3b414a28765 writes:
> Regarding Bill Jansen's experience, I read in his message a question
> that you haven't answered but which perhaps lies at the core of his
> complaint: the way I read it, he believes that you write the text
> *once* into a background pixmap and then scroll it around.  I can't
> believe this is true.  If indeed it isn't true you should perhaps
> explain why it takes so long to read the RFC in (is it just slow ftp
> or are you doing lots of processing?) and whether it is true that
> the X server should be chewing up CPU?  Could it be that Bill's
> server is too eager to do backing store and generates an exposure
> event for the entire subwindow?  (Perhaps Xmosaic can set a resource
> that disables this behavior?)

It's not storing a huge window-sized pixmap -- that would take one
hell of a lot of memory.  It's letting the X window mechanism generate
appropriate expose events and repainting on the fly.  Parsing a
document that long and finding out how to break it up into document
pages just plain takes a while -- but, for what it's worth, it will
take less time in 0.9, for reasons I'm not even going to go into here.


Marc Andreessen
Software Development Group
National Center for Supercomputing Applications