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RE: new emacs24 settings (was: Re: Performance problems (CPU 100%) with

From: Drew Adams
Subject: RE: new emacs24 settings (was: Re: Performance problems (CPU 100%) with NULs in files)
Date: Fri, 23 Sep 2011 09:39:36 -0700

> Drew Adams wrote:
>> Are you using the development version of Emacs (aka Emacs 24)?
>> If so, I have no idea whether this will help or help you find
>> the problem, but you might try doing this to see if it makes a
>> difference: (setq-default bidi-display-reordering  nil)
> This helped me with my slow scroll issues.  Holding down arrow on
> a fully maximized frame on a 1080p monitor was spiking my
> duo-core CPU to 20-25%.  Scrolling text.  50% of one CPU.
> Just to scroll text.  And it would start jumping around almost
> right away.  With this setting, it goes down to 8-14% while
> scrolling.  Still kind of silly, but that's better than emacs23.

Please try to report your experience using `report-emacs-bug'.  Eli Z., who is
the developer working on bidi support, would _very_ much appreciate knowing
about any such issues.  It's not obvious to him what might not work well, unless
he receives a bug report.  The more specific you can be, the better.
> Do you have any other useful emacs24 settings?

Nope, not yet.  There have been quite a few changes made to the way (where, how)
buffers get displayed, but that development seems to still be in flux
(redefinition).  If you experience odd behavior wrt buffer display, please
report it as a bug.

As always, if it turns out that there is no bug, the Emacs developers will be
happy to let you know.  When in doubt, report something as a bug, to provide
them the info.  They can then sort things out.

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