Friends of technical issues in Thunderbird and owners of high-powered hardware, is has come to our attention that we shipped TB 60 with various performance regressions. The latest crisis was solved yesterday by a backout of two bugs which made address search and address auto-complete slow to a point of being unusable[1]. Further complaints[2] exist regarding the message pane where the Mozilla platform is now using (slow) ICU to format times and dates. Another complaint is that "Account Central" is now visible for an extended point of time upon start-up[3]. The man with the best hardware on the project as far as I know, Andrei/Sancus, said via IRC: "I see that flash for about 500ms before the start page shows", but others see it for much longer. Decoding of messages has been switched from uconv to encoding_rs[4]. I don't know whether this improved or degraded performance, but I'm about to land some changes[5] which certainly won't make things faster as they will add a charset lookup to every decoding action to cater for some exotic charsets that encoding_rs doesn't natively recognise. I also heard about some slowness related to Calendar/Lightning. All in all, we should start a program to monitor performance in order not to be hit by complaints when it's too late. Jörg. [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1511885 [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1510325 [3] https://bugzilla.mozilla.org/show_bug.cgi?id=1484270 [4] https://bugzilla.mozilla.org/show_bug.cgi?id=1363281 [5] https://bugzilla.mozilla.org/show_bug.cgi?id=1511950

On 06-Dec-18 3:44 AM, Jörg Knobloch wrote: > Friends of technical issues in Thunderbird and owners of high-powered > hardware, > > is has come to our attention that we shipped TB 60 with various > performance regressions. The latest crisis was solved yesterday by a > backout of two bugs which made address search and address > auto-complete slow to a point of being unusable[1]. > > Further complaints[2] exist regarding the message pane where the > Mozilla platform is now using (slow) ICU to format times and dates. Is this the source of the "gibberish" dates that are making the rounds in support forums? > > Another complaint is that "Account Central" is now visible for an > extended point of time upon start-up[3]. The man with the best > hardware on the project as far as I know, Andrei/Sancus, said via IRC: > "I see that flash for about 500ms before the start page shows", but > others see it for much longer. I think this "change" might be related to a more general almost freeze when getting mail.  I see no issues on startup, but I startup offline. Going online brings Thunderbird to an almost complete, and some time to a complete, stop. I have had no chance to run an tests,  but since 60.3.2 I am seeing a freeze after clicking hyperlinks like as if there is a callback looping waiting to a success response. Matt

On 05/12/2018 22:31, Matt Harris wrote: >> Further complaints[2] exist regarding the message pane where the >> Mozilla platform is now using (slow) ICU to format times and dates. > Is this the source of the "gibberish" dates that are making the rounds > in support forums? Gibberish? One consequence of the change is that users might not see the format they saw before: https://www.thunderbird.net/en-US/thunderbird/60.0/releasenotes/ NEW: An option under "Tools > Options, Advanced, General" now allows to select whether date/time display will follow the application locale (adjusted by operating system's format settings for that locale) or the locale selected in the operating system's regional settings. In other words, an US English Thunderbird can use, for example, German formats. Jörg.