Re: [gentoo-user] Firefox occasionally stalls

[J. Roeleveld]

On March 21, 2017 8:35:36 PM GMT+01:00, Alan McKinnon <alan.mckinnon@×××××.com> wrote:
>This post is rather vague, sorry about that in advance.
>
>I've spent much time on this and gotten absolutely nowhere. So I
>conclude all my thoughts and assumptions are wrong and not worth even
>sharing (on account of them being so wrong).
>
>I have firefox like this:
>
>[I] www-client/firefox
>      Available versions:  45.7.0^d 45.8.0^d (~)51.0.1^d {bindist
>custom-cflags custom-optimization dbus debug ffmpeg +gmp-autoupdate
>+gstreamer gtk2 hardened hwaccel jack +jemalloc +jemalloc3 +jit neon
>pgo
>pulseaudio rust selinux +skia startup-notification system-cairo
>system-harfbuzz system-icu system-jpeg system-libevent system-libvpx
>system-sqlite test wifi L10N="ach af an ar as ast az be bg bn-BD bn-IN
>br bs ca cak cs cy da de dsb el en-GB en-ZA eo es-AR es-CL es-ES es-MX
>et eu fa ff fi fr fy ga gd gl gn gu he hi hr hsb hu hy id is it ja ka
>kk
>km kn ko lij lt lv mai mk ml mr ms nb nl nn or pa pl pt-BR pt-PT rm ro
>ru si sk sl son sq sr sv ta te th tr uk uz vi xh zh-CN zh-TW"}
>      Installed versions:  51.0.1^d(21:30:20 21/02/2017)(dbus
>gmp-autoupdate jemalloc pulseaudio skia startup-notification
>system-harfbuzz system-icu system-jpeg system-libevent system-libvpx
>system-sqlite wifi -bindist -custom-cflags -custom-optimization -debug
>-gtk2 -hardened -hwaccel -jack -neon -pgo -rust -selinux -system-cairo
>-test L10N="en-GB en-ZA -ach -af -an -ar -as -ast -az -bg -bn-BD -bn-IN
>
>-br -bs -ca -cak -cs -cy -da -de -dsb -el -eo -es-AR -es-CL -es-ES
>-es-MX -et -eu -fa -ff -fi -fr -fy -ga -gd -gl -gn -gu -he -hi -hr -hsb
>
>-hu -hy -id -is -it -ja -ka -kk -km -kn -ko -lij -lt -lv -mai -mk -ml
>-mr -ms -nb -nl -nn -or -pa -pl -pt-BR -pt-PT -rm -ro -ru -si -sk -sl
>-son -sq -sr -sv -ta -te -th -tr -uk -uz -vi -xh -zh-CN -zh-TW")
>      Homepage:            http://www.mozilla.com/firefox
>      Description:         Firefox Web Browser
>
>with these plugins:
>- adblockplus
>- flashblock
>- foxyproxy standard
>- restart browser
>- user agent switcher
>- youtube all html5
>
>Occasionally, according to no discernable pattern, all my tabs on all
>some/most/all Firefox windows stop responding. Clicking and scrolling
>in
>the content has no effect. Can't open new tabs, can't close tabs, can't
>
>switch to existing tabs. Sometimes it affects only one firefox window,
>sometimes all firefox windows.
>
>Imagine if you will that firefox is coded with one global loop that
>gets
>user actions and responds, then that loop gets stuck somewhere. The
>firefox window will not be affected (controlled by KDE), and neither is
>
>the X-server but the tabs can all do nothing till the loop unsticks.
>It's an effect like that.
>
>Sometimes it does work after a delay >30s.
>The sysadmin in me says 30s? Hah, check DNS resolver timeouts. Checked,
>
>found nothing unusual. Proxy looks OK, VPN looks OK, Chrome never has
>this problem so it's firefox specific.
>
>Firefox itself is up, it responds correctly to moving around the menus,
>
>just can't do some of the actions like open the Addons page (that is
>regular content in a tab).
>
>The issue ALWAYS goes away if I restart firefox, either with the
>restart
>addon or Alt-F4 and start from KDE menu. I have "load previous tabs"
>set
>to true so those actions are pretty equivalent.
>
>DE is Plasma 5, and the problem isn't from a recent upgrade, I've been
>battling with this for ages through MANY kde and firefox updates.
>
>My question:
>Where the hell do I start to figure out what's really going on?
>I used up all my sysadmin troubleshooting knowledge and have had to
>revert back to n00b status on this one.

I see this with some websites that do some weird stuff.
CPU for at least one core then also goes to 100÷.
Make a list of websites open in tabs when it happens to see if there are common ones that are always there when you have the issue.

--
Joost
-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.