I don't know about anyone else, but I am still having the slowness issue with Firefox, even after upgrading to the (unannounced) 52.2.1 release. For this reason I am pushing Chrome to our users because we cannot keep having random page timeouts slowing us down like this.

I cannot find a way to recreate the issue, other than at least once per hour the whole browser stops loading pages and it takes anywhere from 30-60 seconds before I can use firefox again. I can open new tabs and start trying to load pages, but none of them load until whatever is bottle-necking the browser finally releases.

jim


On 6/6/2017 11:50 AM, Lawrence Mandel wrote:
Thanks Samuel. As a follow up, I have filed https://bugzilla.mozilla.org/show_bug.cgi?id=1370629

Lawrence

On Fri, May 19, 2017 at 9:22 AM, Samuel Ambaye <[email protected] <mailto:[email protected]>> wrote:

    We noticed the issue when one of our users reported a similar
    issue following a minor version ESR update:

    Using FF 45.9.0.6310 & Windows 7.
    (1) Start FF
    (2) goto this URL www.lematin.ch <http://www.lematin.ch>
    (newspaper in Geneva, Switzerland)
    Results: Browser waits for the page to load for two-three minutes
    to load (but would actually load);
    Results: Other browsers, No issue;
    (4) Close browser
    Browser hangs and requires a kill process.
    (5) Restart Browser and Try different web sites, even ones that
    were ok before;
    Results: Browser waits for web site for over two / three minutes;
    (5) Kill Process, Restart browser and repeat step 2 and 5:
    Same Result;
    (6) Kill Process, Replace FF user profile and repeat step 2 and 5:
    Same Result;
    (7) Uninstall FF for users who were affected; Install FF 52.1.0.6316
    Issue no longer reproducible

    We hope this helps.

    Best,
    Samuel



    >>> Jim Weill <[email protected]
    <mailto:[email protected]>> 19/05/2017 00:17 >>>
    I notice the issue when I first open FF in the morning on Windows
    7 Pro
    x64 machines.  After that I cannot come up with a reliable way to
    reproduce this issue, other than it happens at random times throughout
    the day.

    I do not notice this on Mac OSX 10.12 at all (we have a few of these).
    And I have not polled our Linux users on this issue, so I do not know
    where that stands.

    Is there something in the dev tools that I can leave open when this
    happens again to try to narrow this down?  I've had this happen
    several
    times today already.

    jim


    On 5/11/2017 11:51 AM, Phil Pishioneri wrote:
    > On 5/11/17 2:06 PM, Julien Cristau wrote:
    >> we've filed a bug at
    >> https://bugzilla.mozilla.org/show_bug.cgi?id=1361865
    <https://bugzilla.mozilla.org/show_bug.cgi?id=1361865> to investigate
    >> the issue reported in this thread. Unfortunately so far we haven't
    >> been able to reproduce this internally.  Does anyone on this thread
    >> have a reliable way to reproduce the problem you've seen?  If
    this is
    >> also reproducible with the non-ESR Firefox releases, knowing which
    >> version introduced it would also help narrow down the search.
    >
    > I've had very reproducible delays since (non-ESR) release 48. I
    found
    > it related to syncing of my (large) bookmarks. Whenever the sync
    > process starts (this can be "random", especially if a Firefox is
    > active on another host syncing to the same account), Firefox's UI
    > locks up for a few seconds. On a Mac, I get the spinning beach ball;
    > on Windows, I'll get the window title bar message about the process
    > not responding; I don't recall the behavior on Linux, other than
    > Firefox becomes unresponsive. Creating a new bookmark also starts a
    > sync (and, it'll start while the "Bookmark This Page" window is
    open).
    >
    > My circumvention was to find the host name being used for my
    sync, and
    > put in an override in my client's hosts file that maps the name to
    > loopback 127.0.0.1, then commenting that out and manually starting a
    > sync when I need it (then uncomment it again afterward).
    >
    > My multiprocess status is off on all of these platforms due to
    > incompatible extensions.
    >
    > -Phil
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