Bug 277638 - Kontact lags if network is slow
Summary: Kontact lags if network is slow
Status: RESOLVED WORKSFORME
Alias: None
Product: kontact
Classification: Applications
Component: general (show other bugs)
Version: 4.4.11
Platform: Debian unstable Linux
: NOR normal
Target Milestone: ---
Assignee: kdepim bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-07-12 17:17 UTC by SZÉKELYI Szabolcs
Modified: 2011-07-16 19:33 UTC (History)
0 users

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Description SZÉKELYI Szabolcs 2011-07-12 17:17:52 UTC 
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
Comment 1 Christophe Marin 2011-07-16 19:33:19 UTC 
I cannot reproduce with kdepim master.

Please retry with kdepim >= 4.6.1