Abnormal CPU load while just usual terminal output

[Andriy Gapon]

on 28/01/2009 14:13 Vladimir Grebenschikov said the following:
> Hi
> 
> After recent Xorg upgrade I've see abnormal CPU load on just:
> nice 20 make buildworld
> 
> and from another terminal:
> nice 20 portupgrade -a
> 
> Surprisingly ~80% of CPU (by top) was eaten by Xorg process.
> 
> both process was run under gnome-terminal.
> 
> Minimizing of terminals does not solve problem, but putting build
> process under screen and open inactive screen page solve problem (xorg
> eats now ~3%).
> (same if open inactive tab of gnome-terminal).
> 
> I've seen something like that before upgrade of X, but it did eat 15-20%
> in worst case.
> 
> Build processes do not produce much output (few lines per second).
> 
> Looks like something seriously broken.
> 
> # uname -a
> FreeBSD vbook.fbsd.ru 8.0-CURRENT FreeBSD 8.0-CURRENT #3: Sun Jan 18
> 00:03:20 MSK 2009     root at vbook.fbsd.ru:/usr/obj/usr/src/sys/VBOOK
> i386
> #
> 
> ULE scheduler

I think that I've seen something very similar with konsole (on 7.1
system with ati X driver). And it is before the upgrade.
Maybe font rendering is at play? (OTOH I configured terminus font for
konsole).

-- 
Andriy Gapon