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Re: 23.0.50; MacOS X 10.4: very slow visuals, multi-tty patch suspected

From: Ted Zlatanov
Subject: Re: 23.0.50; MacOS X 10.4: very slow visuals, multi-tty patch suspected
Date: Thu, 06 Sep 2007 10:45:46 -0500
User-agent: Gnus/5.110007 (No Gnus v0.7) Emacs/22.1.50 (darwin)

On Thu, 06 Sep 2007 07:14:54 -0700 Dan Nicolaescu <address@hidden> wrote: 

DN> Ted Zlatanov <address@hidden> writes:
>> Started Emacs without any init functionality to confirm this
>> performance issue.
>> Visual operations (e.g. line down/up) are much, much slower than in
>> my last CVS build from 2 weeks ago.  There is a perceptible lag every
>> time I press up/down arrow for example.  I didn't see a way to compile
>> without multi-tty at the configure level to confirm the multi-tty
>> patch is the problem, but I suspect it.  It may be related that
>> (start-server) doesn't start the Emacs server.
>> Nonvisual operations, e.g. Gnus loading, are as fast as they were
>> before based on observation but no hard numbers.

DN> This is a known problem (it has been reported before), unfortunately
DN> nobody seems to care enough about that platform to try to fix it and
DN> there is no active maintainer for it.

If the problem appeared with the recent multi-tty merge, as I am
guessing, wouldn't it make sense to look at at least disabling that
functionality selectively as configure options?  I know very little
about MacOS Carbon development, but this seems like a nasty problem that
will hit lots of users.  Would Emacs 23 get released with such slow
visual performance?  I hope not.


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