[Fontconfig-bugs] [Bug 105085] Performance concerns when larger CJK fonts are installed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105085

--- Comment #8 from Akira TAGOH <akira at tagoh.org> ---
(In reply to Mingcong Bai from comment #5)
> If that's the case this is good news... I have tried .92 just yesterday but
> it seemed to not like my old fontconfig xmls, spewing out a lot of parsing
> errors - and reverted to "defaults", don't remember the specifics. Is there
> a change resulted the change in fontconfig XML formatting?

No idea. what errors did you see?
such drastic changes shouldn't be made in config since 2.12.6

> Another thing is that it doesn't seem like the `faster` branch changes as
> referenced in #64766 is merged with the master - could you clarify?
> 
> I have re-opened the report as there's not a conclusive claim to improved
> performance in this case.

As we decided this is a dup of #64766, this obviously improved. see:

On 2.12.6
$ time fc-cache -f /usr/share/fonts/google-noto-cjk
fc-cache -f /usr/share/fonts/google-noto-cjk  186.64s user 0.43s system 96% cpu
3:13.38 total

On git master
$ time ./build/fc-cache/fc-cache -f /usr/share/fonts/google-noto-cjk
./build/fc-cache/fc-cache -f   0.19s user 0.04s system 9% cpu 2.281 total

Hope that helps

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