On Fri, 10 Apr 2009, Cedric BAIL wrote:
On Thu, Apr 9, 2009 at 5:39 PM, Alan Coopersmith
<[email protected]> wrote:
Cedric BAIL wrote:
I am a developper of the Enlightenment project, and during my work
on optimising it, I did find that _XimParseStringFile was accounting
for more than 30% of the time needed to get a window to show (under
valgrind). I am using an Ubuntu Intrepid and it provide a 630KB
"/usr/share/X11/locale/en_US.UTF-8/Compose". So it take a lot of time
to read and parse. I did write a small patch, attached, that use mmap
to read the file, this make _XimParseStringFile only account for 14%
of the time, a little bit better.
mmap()'ing sounds like a fine idea, but I wonder if we need any #ifdef's
or configure checks for it for platforms like Cygwin, or if it's safe to
use on all.
I did ask a friend about Cygwin case, and they provide a working mmap
implementation. But if libX11 support mingw, we need some #ifdef
around this mmap.
well, i think that cygwin has an mmap implementation. It would be quite
anormal to not have one, actually.
i use only mingw, and i have written a kind of port of mmap, which seems
to work with enlightentment libraries on windows with mingw. So, if
needed, i can provide the code.
Vincent Torri
I think that if it's a normal
behaviour to provide a 630KB file to parse (and it sounds like it is
as the last size from libX11 git is around 670KB), changing this file
to precompiled binary file format would be a better patch, sadly I
don't have the needed time to write it right now.
I thought that's what was done by the mkcomposecache changes that SuSE
contributed a few years ago, but I don't think many people updated their
packages to build compose caches.
How can I activate this ? And what about making it on by default ?
--
Cedric BAIL
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