Bug 1125813

Summary:	Firefox, 100% CPU load on all cores, for ~20 seconds, every minute, removing ~/.fonts
Product:	[openSUSE] openSUSE Tumbleweed	Reporter:	Michael Traxler <M.Traxler>
Component:	X11 Applications	Assignee:	E-mail List <bnc-team-screening>
Status:	RESOLVED DUPLICATE	QA Contact:	E-mail List <qa-bugs>
Severity:	Major
Priority:	P5 - None	CC:	badshah400, fkrueger
Version:	Current
Target Milestone:	---
Hardware:	x86-64
OS:	openSUSE Factory
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Michael Traxler 2019-02-18 16:08:59 UTC

When running Firefox on the newest Tumbleweed from time to time (~1 minute time spans) the firefox threads go to 100% CPU load and you can not open new tabs in firefox, for some time. The time of blocking is dependent on the number of fonts you have installed and you can see with strace that firefox goes in a loop opening all installed fonts.
A workaround for me was to remove .fonts.

The solution I found here:
https://askubuntu.com/questions/1076412/firefox-freezing-with-100-cpu-usage-for-30-seconds-when-launching-chromium

Comment 1 Frank Krüger 2019-02-18 19:36:57 UTC

(In reply to Michael Traxler from comment #0)
> When running Firefox on the newest Tumbleweed from time to time (~1 minute
> time spans) the firefox threads go to 100% CPU load and you can not open new
> tabs in firefox, for some time. The time of blocking is dependent on the
> number of fonts you have installed and you can see with strace that firefox
> goes in a loop opening all installed fonts.
> A workaround for me was to remove .fonts.
> 
> The solution I found here:
> https://askubuntu.com/questions/1076412/firefox-freezing-with-100-cpu-usage-
> for-30-seconds-when-launching-chromium

Probably a duplicate of https://bugzilla.suse.com/show_bug.cgi?id=1124816. A fix seems to be on the way: https://build.opensuse.org/request/show/673056.

Comment 2 Atri Bhattacharya 2019-02-19 00:56:36 UTC

Please reopen if fontconfig package from M17N (https://build.opensuse.org/package/show/M17N/fontconfig) does not help.

*** This bug has been marked as a duplicate of bug 1124816 ***