[kde-linux] monitoring konqueror degrading performance

[James Richard Tyrer]

Pol wrote:
> Opening several konqueor windows (kde 3.5.10), each with dozens tabs,
> steadily slows down performance. 12-24 hours working result: 
>  - tens seconds to switch tabs and to pop up inactive windows;
>  - several minutes to render web pages, while reaching the same web sites
> by a non graphic browser (e.g. links) takes one second. 
> 
> Any hints?

Don't do that! (sorry old joke) :-)

> How to closely monitor konqueror activity, to spot the problem?
> 
This is an issue, perhaps even a bug.  The problem is that Konqueror 
does not control multiple tasks.  You could says that this is a general 
bug with running a GUI desktop on a non-RTOS.

If you open KSysGuard, you will see that if you have multiple instances 
of Konqueror open that if they are all running that sometimes they have 
approximately equal "User%".  This is clearly not what you would want if 
your were designing it.  You are only using one of them at a time.

What you would want is for windows to be given priorities based on 
whether they are minimized, whether they were on the current desktop, 
and which one had focus.  KWin could do this if it was running with root 
permissions.

The tab issue might be able to be handled in Konqueror if each tab was 
opened in a thread and they were assigned priorities based on which one 
had focus.

Another thing that would help would be to have two threads for a 
process.  A small one to accept input and a large one to do the work.

-- 
James Tyrer

Linux (mostly) From Scratch