On 1 January 2018 at 09:27, Fred Smith <fredex@fcshome.stoneham.ma.us> wrote:
On Mon, Jan 01, 2018 at 12:00:59PM +0000, Terry Barnaby wrote:
> Is anyone else seeing issues with Firefox freezing up for 30secs or
> more when web pages are opened in TABS ?

I had problems with Firefox freezes (very long delays responding to any mouse
click) on several systems (linux and macOS).  Removing the Mr. Robot add-on
(https://www.engadget.com/2017/12/16/firefox-mr-robot-extension/) seems
to have restored normal operation. 
 
> Since the latest Firefox 57 this is happening a lot for me (every 10
> mins or so). Seems to lockup while downloading the page. You can
> still operate Firefox by clicking on menu's/Tab's etc, but no tab
> windows have thier web content updated. Normally the new tabs
> content are blank, but sometimes a small amount of the web page is
> rendered before the freeze. No obvious high CPU usage when it
> happens. Its as if the network has stopped, but other applications
> such as google-chrome are still working.
>
> This is with Fedora27, KDE Plasma and with an NFS mounted home directory.

I see something similar with FF57 on Centos-7. it tends to go on for
much longer than 30 seconds, and the HD activity light is pegged ON
for the duration. I'm guessing it may be a swap storm, but I don't see
unusually  high memory usage in top.

--
---- Fred Smith -- fredex@fcshome.stoneham.ma.us -----------------------------
                        The Lord is like a strong tower.
             Those who do what is right can run to him for safety.
--------------------------- Proverbs 18:10 (niv) -----------------------------
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--
George N. White III <aa056@chebucto.ns.ca>
Head of St. Margarets Bay, Nova Scotia