I reported this problem to the fontconfig list once before but failed to
raise a response.
Perhaps the problem is specific to Fedora? Could somebody try to
reproduce?
John
--- Begin Message ---
John Ellson a écrit :
David Turner wrote:
Hello John,
I suspect the problem is fontconfig.
I'm a graphviz developer, and dot, which is a command line utility
from graphviz, uses: pango+cairo+fontconfig+freetype
Every time I run dot it opens 940 files in /var/cache fontconfig
just to resolve "Times-Roman" !
$ strace dot hello.dot 2>&1 | grep open | grep
/var/cache/fontconfig | wc
940 3760 79900
Its not a problem specific to graphviz, or even cairo. The
fontconfig utility fc-match has the same problem:
$ strace /usr/bin/fc-match serif 2>&1 | grep open | grep
/var/cache/fontconfig | wc
940 3760 79900
Perhaps this doesn't matter much for a gui appplication, but its a
major problem for command line, or web-server applications.
A recent version of fontconfig should be able to use a global cache,
instead of having to re-open all font files
on startup. Moreover, FreeType 2.2.1 and later contain several
speed-ups that might affect performance
positively when opening a lot of font files.
it'd be interesting to know which versions of these libraries you're
using.
I'm using the latest available version on Fedora Development:
fontconfig-2.3.95-4
freetype-2.2.1-2
this is quite strange, please forward this to the fontconfig mailing
list, they must be made aware of the problem.
Hope this helps,
- David
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