901307 - Memory Leak in Lightning 1.9.1 with Exchange EWS Provider Add-on for Lightning

Status: RESOLVED INCOMPLETE

(Calendar :: Lightning Only, defect)

Description

[mad.engineer]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:22.0) Gecko/20100101 Firefox/22.0 (Beta/Release)
Build ID: 20130618035212

Steps to reproduce:

Installed Lightning 1.9.1 with TB 17.0.7, OS X 10.8.4, with Exchange 2007/2010 Calendar and Tasks Provider add-on to access my Exchange 2010 Calendar.


Actual results:

TB became very slow, checked Activity Monitor and noticed that TB was using upwards of 750MB memory


Expected results:

Un-installed Lightning add-on, TB went back to normal with memory usage around 150MB or so. There is definitely a memory leak in Lightning 1.9.1 making is unsable with TB 17.0.7

Comment 1

[Wayne Mery (:wsmwk)]

Is it better with Thunderbird 24 and updated Lightning?
Can you localize the problem to specific calendar items, like recurring appointment(s)?

Comment 2

[mad.engineer]

Upon further use, it appear that the memory leak start when using the Exchange EWS Provider Add-on for Lightning: http://www.1st-setup.nl/wordpress/?page_id=133. Even with TB 24.0 and Lightning 2.6, as soon as you install and setup the calendar, the memory usage on TB jumps to ~800MB constantly making TB so slow that it becomes un-usable. As soon as you un-install the add-on, TB works OK.

Comment 3

[Wayne Mery (:wsmwk)]

(In reply to mad.engineer from comment #2)
> Upon further use, it appear that the memory leak start when using the
> Exchange EWS Provider Add-on for Lightning:
> http://www.1st-setup.nl/wordpress/?page_id=133. Even with TB 24.0 and
> Lightning 2.6, as soon as you install and setup the calendar, the memory
> usage on TB jumps to ~800MB constantly making TB so slow that it becomes
> un-usable. As soon as you un-install the add-on, TB works OK.

see https://www.1st-setup.nl/bugzilla/show_bug.cgi?id=279

does that newer version of the addon help?

Comment 4

[mad.engineer]

I've tested this with the latest/last version 3.2.0-Beta-46 that is out there with the same symptoms that is described in the above bug report. Unfortunately, Michel Verbraak have decided not to work on this add-on anymore so not sure who can fix this.

Comment 5

[Wayne Mery (:wsmwk)]

(In reply to mad.engineer from comment #4)
> I've tested this with the latest/last version 3.2.0-Beta-46 that is out
> there with the same symptoms that is described in the above bug report.
> Unfortunately, Michel Verbraak have decided not to work on this add-on
> anymore so not sure who can fix this.

They are up to beta 77 as of spring 2014.

Are you able to determine, using Help | Troubleshooting | About:memory whether the high memory usage is actually in EWS, vs Calendar?

Comment 6

[mad.engineer]

sorry, I haven't had a chance to use this add-on beyond the last version that it's original author released.

Comment 7

[Wayne Mery (:wsmwk)]

Thanks for the feedback.

(In reply to mad.engineer from comment #6)
> sorry, I haven't had a chance to use this add-on beyond the last version
> that it's original author released.

I looks to me like EWS is at fault - in which case the bug will be closed INVALID.  But we don't know yet, so closing INCOMPLETE. If you do further testing, please provide more information based on the questions above.