Re: Why searching fonts in xetex is so slow?

[Hans Hagen <pragma@wxs.nl>]

Mojca Miklavec wrote:
> On Sat, Apr 25, 2009 at 15:33, Yue Wang wrote:
>> I see, no font is defined when dumping the formats... pretty unlike plain TeX...
>> then why so much time is used for iwona, while only 1.2 sec is used to
>> load lm roman?
> 
> I have a bit of a problem to test all that since running fc-cache only
> takes two seconds.

here fc-cache takes minutes

> A run with iwona takes 2.1 seconds (2.4 when some math equations are
> added) and a run with LM takes 1.1 seconds. The timings refer to
> subsequent runs, not to the first run.

lm is faster because the definitions are preloaded (not the fonts 
themselves but the typescript defs)

> Maybe I should try to experiment on Windows. I have no idea when XeTeX
> forces reload of fc-cache, but I suspect that any other application
> does the same if font database becomes outdated. I didn't notice
> subsequent runs of fc-cache though. Once fc-cache is through, it
> doesn't run for a while.

here it runs *each* xetex run

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