[Bug 243823] New: dbus excesive usage makes plasma and kscreenlocker unresponsive

[Jaime Torres]

https://bugs.kde.org/show_bug.cgi?id=243823

           Summary: dbus excesive usage makes plasma and kscreenlocker
                    unresponsive
           Product: KMail 2
           Version: 2.0 beta1
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: jtamate at gmail.com


Version:           2.0 beta1 (using Devel) 
OS:                Linux

First of all, I do not know where this bug should be placed. dbus, akonadi or
kmail2.

When syncing a folder (the gmail total folder) with around 50.000 mails stored,
akonadi_imap seems to use dbus to comunicate with kmail2 or whatever.
In a normal session, dbus cpu usage is < 1%.
In this situation, dbus cpu usage is >20%.
At some time, plasma makes a dbus call and it is so far in the dbus queue that
looks blocked. The same happens to kscreenlock when it wants to show the unlock
dialog.
Changing akonadi_imap nice to 20 alleviates the problem a little bit, but it
will happen again and again.

Reproducible: Always

Steps to Reproduce:
to have stored a lot of kmail bugs mails.


Expected Results:  
reduce the dbus usage or make dbus use several queues (or a special queue for
akonadi)

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