Ronan Jouchet Reporter
	Description • 13 years ago

User Agent: Mozilla/5.0 (Ubuntu; X11; Linux i686; rv:9.0) Gecko/20100101 Firefox/9.0
Build ID: 20111124194126

Steps to reproduce:

1. Set up a few online calendars (e.g. http://www.google.com/calendar/ical/4b3vms6i8vm26lvg69d7ncobec%40group.calendar.google.com/public/basic.ics )
2. Check the 'cache' option in their properties
3. Restart Thunderbird


Actual results:

- High hard drive load
- Thunderbird's UI froze (nothing was clickable) during calendar refresh.

I have 6 online calendars, the impact in seconds for each one (in seconds) is: 2, 12, 15, 50, 3, 5, totalling a minute and a half to be able to read email. The 50seconds badass calendar is the one mentioned above


Expected results:

Thunderbird should start as quickly as usual, or maybe with a small delay. If caching requires sync at startup, maybe it could be done in a way that doesn't impact the usability of the whole mail client (use a different thread?)

Note: I'm positive my bug is due to the "cache" feature: unchecking the cache for each calendar results in a Tb starting up as fast as expected.

	Ronan Jouchet Reporter
	Comment 1 • 13 years ago

Debug info:

Hardware: a recent Dell laptop with an okay HD and 8 cores
OS: Ubuntu 11.10 x86
FS: Ext4
Thunderbird: 8.0
Lightning: 1.0

	Felix Möller
	Comment 2 • 13 years ago

Adding Mohit as he developed the offline mode.

Does this just happen with the ICS Provider? Happens the same with the CalDAV provider? 

Could you attach teh calendar.debug.

Thanks

	Stefan Sitter [:ssitter]
	Comment 3 • 13 years ago

Known problem. There is a patch waiting for review in Bug 412914 that might help.

	Felix Möller
	Comment 4 • 13 years ago

Thanks Stefan! This is exactly the same and therefore a duplicate.