Bug 170426 - Konsole VERRRRRRRRRY Slow over Xwindows.
Summary: Konsole VERRRRRRRRRY Slow over Xwindows.
Keywords:
Status: CLOSED WORKSFORME
Alias: None
Product: Fedora
Classification: Fedora
Component: kdeutils
Version: 3
Hardware: i386
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Than Ngo
QA Contact: Ben Levenson
URL:
Whiteboard:
: 170477 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2005-10-11 16:31 UTC by Neal Rhodes
Modified: 2007-11-30 22:11 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2005-10-12 09:08:50 UTC
Type: ---
Embargoed:


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Description Neal Rhodes 2005-10-11 16:31:56 UTC
Description of problem:  When running an X session from another PC using an X
server on that PC, the Konsole application is incredibly slow, like 2400 baud
slow.  xterm is NOT.   Interestingly, Firefox is very slow to scroll, but
Konquerer is not so bad.


Version-Release number of selected component (if applicable):
Qt: 3.3.4
KDE: 3.4.2-0.fc3.2 Red Hat
Konsole: 1.5.2



How reproducible:  I'm using WinaXe, although I think this would happen 
with any Xserver software.    Or even from another linux machine if you 
could get it to run an XDMP session from another linux system.


Steps to Reproduce:
1.   Start xterm.  "time cat /etc/termcap".   Blink twice. 
2.   Start konsole. "time cat /etc/termcap".   Go get a cup of coffee and a bagel.
3.
  
Actual results:
on the system console, you CAN see the difference:
    xterm takes 2.3 secs, 
    konsole takes 4.3 seconds.
on a remote X display, its MUCH worse:
    xterm takes 11 secs, 
    konsole takes 52.4 seconds


Expected results: I'd expect that Konsole would be able to scroll a screen down
about as fast as Xterm. 


Additional info:

Comment 1 Marius Andreiana 2005-10-12 04:08:32 UTC
*** Bug 170477 has been marked as a duplicate of this bug. ***

Comment 2 Than Ngo 2005-10-12 09:08:50 UTC
The most KDE/GNOME applications (like konsole) use the feature "anti_aliasing 
for font" and therefore is much slower than xterm which does not support this 
feature. 
 
to disable this feature you should start konsole with the option "--noxft", 
it will be much faster then before. 


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