Google network calendar with ~4000 items takes ~8mn to load - lightning/calendar 68.1 - Provider for Google Calendar 68.1 (gdata-provider) - Thunderbird 68.1 ESR about gdata-provider HOT 12 CLOSED

Philipp,

Any advise on how loading speed of Google Calendar can be improved in Thunderbird 68.1 ESR?
Any setting tweaks available to end-users?

It take 2mn loading per 1000 items batch in Thunderbird lightning/calendar UI...

Is that related to bug https://bugzilla.mozilla.org/show_bug.cgi?id=501689 you refer to in https://bugzilla.mozilla.org/show_bug.cgi?id=1544320#c35 ?

Comparatively network wise (DevTools > Network) the situation is much better with Google network calendar than with CalDAV network calendar (as per bug https://bugzilla.mozilla.org/show_bug.cgi?id=1543953):

ADSL - All Events - No sorting (unifinder) - One Google calendar with ~4000items

Regards,

from gdata-provider.

It is super difficult to make this bug actionable. I think I mentioned in one of the bugzilla bugs, can you create a profile using the gecko profiler? I'd like to figure out if there is something we need to speed up in the Provider or if this is a Lightning bug. I'm assuming the latter, to be honest.

from gdata-provider.

Here is the Thunderbird Dev Tools Performance performance profile you requested... while loading the first 2000 items (about) of my Google "home" calendar with about 4000 items in it.

gdata.#14.devtools.perf.profile.tb.68.1.1.loading.2000first.items.zip

I observe loading progress via the status bar that show "Synchronising home event item X of Y" where X grows incrementally and Y by steps of 1000...

After 1mn23sec from start when reaching 1971 items (about) there is a long "pause" with Thunderbird "flickering" possibly not responding but the mention does not appear... this "pause" last for about 26sec before resuming...

So to load the 2000 first items it takes in total about 1mn50sec...

As further loading progress, the loading slow down, especially pauses re-occurs at some interval causing the Google calendar to take about 8mn to load entirely.

The same calendar takes only 3mn to load entirely via CalDAV in TB 68.1.1 (half+ better than via gdata) which in itself is way too long, it has reported separately here... https://bugzilla.mozilla.org/show_bug.cgi?id=1572823#c3 ... Lightning performance is a work in progress...

So while Lightning is certainly part of the delay, gdata-provider may have its part to play as well... or interaction between the two... causing extra delay... I had opened a bugzilla bug on Mozilla for issue reported here, but it was closed arguing this was a gdata issue, though I am conscious this is not entirely true as Lightning perf also has an impact obviously :-)

I intent to re-run same tests, later on, with more recent version of TB... would gdata-provider add-ons be available for those 70.x or 71.x branches?

If there is a specific version of TB or gdata-provider you want me to run through let me know...

from gdata-provider.

Any update?

from gdata-provider.

from gdata-provider.

I probably wont have time to look in to this any time soon,

Ok. Too bad... but understandable... was worth a try... I did what I could to help...

but if someone else wants to take a stab at it I'm happy to review.

May be worth to advertise this on the git hub within the project readme.md and also on the Thunderbird add-on page perhaps... and in tb-planning... perhaps...

If you or anyone take over in the future, please know that:

• comparatively the same calendar takes only 3mn to load via Lightning/Caldav in TB 68.x branch (Ref: https://bugzilla.mozilla.org/show_bug.cgi?id=1572823#c3) so issue is definitively not only due to Lightning...

• it can easily be actioned/reproducible by setting up a ~4000items calendar on Google and try to load it first time via gdata-provider add-on...

At the meantime, if by any chance you are still able to help bring performance up in Lightning Caldav... please do so... as performance seems regressing again... see at https://bugzilla.mozilla.org/show_bug.cgi?id=1572823#c16
:-)

Thanks for your help.

from gdata-provider.

I am getting the same problem of slow calendar item loading

from gdata-provider.

2020 says hello with the same problem. Major freezes after 7346 items of 8312 has been loaded.

from gdata-provider.

reporting this issue as well.

from gdata-provider.

Reporting this issue as well. Loading Thunderbird the first time and refreshing calendar events both make Thunderbird unusable for several minutes at a time.

from gdata-provider.

It looks like we haven't heard back on this issue, therefore we are closing this issue. If this problem persists in the latest version of Thunderbird and the Provider for Google Calendar, please re-open this issue.

from gdata-provider.

Sorry if this was closed preemptively, I've just set up a github action intended to close newer issues with the needinfo label. That said, I don't think there is immediate action I can take here. Performance is definitely a concern, but there are limitations in what a provider can do. I've done some tweaks in the latest branch on main if someone wants to give it a go. In terms of filing issues, if there is a specific path of code that can be optimized I'm all for having an issue open, otherwise it will be difficult for me to fix the general case.

from gdata-provider.