Red Hat Bugzilla – Bug 170426
Konsole VERRRRRRRRRY Slow over Xwindows.
Last modified: 2007-11-30 17:11:15 EST
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):
KDE: 3.4.2-0.fc3.2 Red Hat
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.
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.
*** Bug 170477 has been marked as a duplicate of this bug. ***
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
to disable this feature you should start konsole with the option "--noxft",
it will be much faster then before.