[kdepim-users] kmail Fast for HTML, but SLOW for plain-text

[Ingo Klöcker]

On Friday 28 March 2008, Jeffrey D Anderson wrote:
> I'm running kmail 1.9.9 from kdepim 3.5.9 on Scientific Linux 5 and
> I've recently noticed a peculiarity in the performance of kmail.
>
> I've noticed this both on IMAP and dimap.
>
> Here is the symptom:
>
> I click on a message and it appears in the message pane.  I noticed
> that lately it has seemed quite sluggish (perhaps since the 3.5.9
> upgrade).  Then I noticed that SOME messages display immediately,
> while others take several seconds to display.
>
> Experimentation has shown that if the message body is of type "Plain
> Text Document" ( as reported in the Message Structure Viewer ) the
> message takes several seconds to display, but if it is of type "HTML
> Document" it displays instantly.  This is true regardless of whether
> I have automatic HTML rendering turned on or off.  I've tried turning
> off custom fonts and custom colors to see if that makes a difference.
>  I've tried turning off or on the Message Structure Viewer.  I've
> tried pretty much every configuration option I could find.
>
> I can't find any other relevant variables.  The slow rendering time
> for plain text messages is the same whether the message is one word
> or many pages. Likewise, HTML messages display instantly, whether
> they are big or small, and whether rendering is turned on or off.

I've never noticed this. Can you probably profile this with valgrind's 
callgrind (http://valgrind.org/docs/manual/cl-manual.html)?


Regards,
Ingo
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