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bug#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpo
From: |
Eli Zaretskii |
Subject: |
bug#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpose of revision 116070. |
Date: |
Sun, 26 Jan 2014 18:33:10 +0200 |
> Date: Sun, 26 Jan 2014 09:54:47 +0000
> Cc: rudalics@gmx.at, 16526@debbugs.gnu.org
> From: Alan Mackenzie <acm@muc.de>
>
> > How do you configure your build? Can you show the exact configure and
> > make commands you use?
>
> ./configure --with-gif=no --with-tiff=no --with-gpm
> time make -j5 bootstrap
Try this instead, and be amazed:
CFLAGS='-O0 -g3' ./configure --with-gif=no --with-tiff=no --with-gpm
--enable-checking='yes,glyphs'
make -j5
IOW, force an unoptimized build, and add some diagnostics code to the
display engine.
My testing indicates that -O0 more than doubles the run time in this
case, and --enable-checking doubles it some more -- for a total factor
of 5 to 6. I get about 7 sec in an optimized version, and about 40
sec in the one configured as above.
(In general, I believe that every Emacs developer who does something
that can affect redisplay should always run an unoptimized build --
this will make any inefficiencies stand out very clearly.)
See my other message with some results of digging into this problem;
hopefully, you will be able to pick up where I left off.
> There's no way that something so massive at the syntax.c level can
> be cheated by a crafty configure option. ;-(
Well, evidently it can.
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression, (continued)
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression, martin rudalics, 2014/01/27
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression, Eli Zaretskii, 2014/01/27
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression, martin rudalics, 2014/01/27
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression, martin rudalics, 2014/01/26
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpose of revision 116070., Alan Mackenzie, 2014/01/25
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpose of revision 116070., Stefan Monnier, 2014/01/25
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpose of revision 116070., Eli Zaretskii, 2014/01/25
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpose of revision 116070., Alan Mackenzie, 2014/01/26
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpose of revision 116070.,
Eli Zaretskii <=
- bug#16526: 24.3.50; scroll-conservatively & c-mode regression. The purpose of revision 116070., Eli Zaretskii, 2014/01/26