Bug#909818: firefox: Web Content is eating nearly 100% CPU, several of them

Dirk Griesbach spamthis at freenet.de
Sat Nov 3 15:03:52 GMT 2018

Package: fontconfig
Version: 2.13.1-1
Followup-For: Bug #909818

Progress. I had the same problem here(TM). Deleting global and local 
fontconfig cache did not solve the problem.

After clearing the local fontconfig cache, that cache would be recreated 
and it would get an additional amount of cache entries, e.g. every time 
I would start Firefox. In the end, ~/.cache/fontconfig contained around 
38000 files. Looking at their content, they pointed to 

I used custom fonts stored in ~/.local/share/fonts back then but 
currently the directory is empty. After deletion of 
~/.local/share/fonts, the number of files in ~/.cache/fontconfig (After 
clearing this one a final time) stays small and constant and Firefox is 
reacting normal again.


-- System Information:
Debian Release: buster/sid
   APT prefers unstable
   APT policy: (500, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 4.19.0 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages fontconfig depends on:
ii  fontconfig-config  2.13.1-1
ii  libc6              2.27-8
ii  libfontconfig1     2.13.1-1
ii  libfreetype6       2.8.1-2

fontconfig recommends no packages.

fontconfig suggests no packages.

-- no debconf information

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