[Bug 257177] New: Subscribing to a share folder slows down dramatically the N900

[Sabine Faure]

https://bugs.kde.org/show_bug.cgi?id=257177

           Summary: Subscribing to a share folder slows down dramatically
                    the N900
           Product: KMail Mobile
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: sabine at kdab.net


Version:           unspecified (using Devel) 
OS:                Linux

Subscribing to a share folder containing about 500 unread emails slows down the
N900 so badly that tabs cannot be opened or closed anymore.

Reproducible: Always

Steps to Reproduce:
- Launch Kmail-mobile
- Click on your Imap account
- Open the 'Actions' tab
- Click on 'Account'
- Click on 'Edit account'
- Check the 'Enable Server-Side Subscriptions' check box
- Click on the 'Serverside subscription...' button and select a shared folder
containing at least 500 unread emails
- Click on 'Ok' twice
- Reopen 'Actions' tab
- Click on 'Synchronize emails in account'

Actual Results:  
The N900 becomes so slow that it cannot perform simple operations like opening
and closing tabs.

This last for more than 10 minutes.

It is a regression since I do not think this happened before.

Expected Results:  
This should not happen enabling the serverside subscription should not slow
down the N900 so badly for so long.

N900, 4:4.6~20101117.1198109-1maemo1.1198084 

In a terminal using the 'top' command I got this information:
4202  4199 user     R    67500 27.4 43.6 /usr/bin/kmail-mobile --graphicssystem
raster 
3400     1 user     S     7572  3.0 30.9 /usr/bin/strigidaemon 
4224  4206 user     S     7068  2.8  4.9 /usr/bin/akonadi_strigi_feeder
--identifier akonadi_strigi_feeder

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