[Bug 277638] New: Kontact lags is network is slow

[SZÉKELYI Szabolcs]

https://bugs.kde.org/show_bug.cgi?id=277638

           Summary: Kontact lags is network is slow
           Product: kontact
           Version: 4.4.11
          Platform: Debian unstable
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: cc at mail.3d.hu


Version:           4.4.11 (using KDE 4.6.4) 
OS:                Linux

It feels like network access in kontact is done in the same thread as
everything else, thus waiting for a response from the network blocks the GUI as
well. This is very annoying sometimes as the GUI (including KMail's message
composer window) can become unresponsive for seconds, and this significantly
slows down message editing.

I'm not sure that this is the real cause of the problem, but it definitely
feels like that. My experience shows that the situation gets worse and worse as
the RTT increases.

Reproducible: Always

Steps to Reproduce:
Use a network with a big RTT. Here's a nice guide to artificially add latency
to an interface:
http://www.linuxfoundation.org/collaborate/workgroups/networking/netem


Expected Results:  
GUI functions should not be blocked by background operations.

OS: Linux (x86_64) release 3.0.0-rc6-amd64
Compiler: gcc

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