We experienced similar performance degradation, but it disappeared when reset profiles and set the new profile to autodetect network settings (not use the system settings – we’ve got an archaic proxy server that’s soon to be retired, and Windows 10 especially doesn’t seem to like talking to it; Firefox talks to it without issue). We had been using a profile template (to set homepage, etc) but we’ve stopped using that. The only thing retained from the old profiles are bookmarks (by exporting to a bookmark backup and then importing into the new profile).
Have you tried doing something like that in your environment? Will Spratt IT Science Support Specialist Tel: 01904 46 2631 From: Enterprise [mailto:[email protected]] On Behalf Of Andrei Boros Sent: 27 February 2018 10:39 To: Sylvestre Ledru <[email protected]>; [email protected] Subject: Re: [Mozilla Enterprise] Slow FF-ESR On 2018-02-27 9:34 AM, Sylvestre Ledru wrote: Hello, Le 27/02/2018 à 08:24, Andrei Boros a écrit : I have reported this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1424684 and the resolution was WONTFIX. I have been witness to gradual end-user perceived performance decrease since FF-49 and it's gotten the worse at FF-52. Being at FF-52-ESR means being stuck with a barely usable browser and endless frustration. Downgrading is not much of an option because of profile format changes. Upgrading to current stable, non-ESR branch is even less of an option, because of too many radical changes since FF57 and most importantly significant loss of functionality. It also means now seriously considering alternativ forks such as SeaMonkey, PaleMoon, Waterfox and also other browsers altogether. Why can't FF-52-ESR receive performance fixes, for performance degradation that appeared with it or it's recent predecessor versions? First, it is likely that Firefox 52 ESR is slower because of external factors (antivirus, security software, malware, etc) or addons. Given that I witnessed the overall slugishes on many installations in a variety of contexts, with and without external factors such as antivirus, security software, addons and lack of (new installations), my guess goes to FF-52-ESR, hence the bug report. In my tests I had to use real world profiles with real world addons. It is there where the performance impact is the problem. I could go so far as to clear history and also test with addons disabled, all but the profiling addon. We are extremely careful when modify Firefox ESR: we will only fix high and critical security issues, very important regressions due to new versions of operating systems or very important crashes. I can understand that and agree with you. However leaving it in a barely usable state ? The performance loss was gradual, since at least 49, and ongoing through 50 and 51, but it is in 52 (both release and esr) that it truly became a major hassle. We have data which shows that, improving performances in a stable product, leads in 50% of the case to regressions (stability, feature, etc). Therefor, because we commit to stability to our users, we won't take any performance improvements into ESR. ESR60 will be released May 8th. Even if we recommend you wait until ESR60.1 or .2, this version will benefit from all the Quantum improvements. Well, it's not that long until then and normally I would contend with the wait, however the promised improvements come at a too great a cost in functionality loss. I have many users willing and wanting to stay at pre57 release and/or 52 esr much longer with all risks involved. Killing so much functionality with Quantum release was a move against FF users, whatever the stated reasons behind it. I know many users who hava already ditched FF for Chrome or Opera because of it. Some of them still use FF release pre57 or esr52 for the specific functionalities and accompanying addons which gave FF a special edge compared to other browsers. But that is gone in Quantum, whatever new features it has. Sylvestre -- ing. Andrei Boros Colectiv administrare-dezvoltare SITE Radio Romania Tel: +40-21-303-1870 +40-745-115721 Email: [email protected]<mailto:[email protected]>
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