(I just declared myself Eternal Newbie, so I'll go ahead and post my question as if I had not been using Linux for the past 5 yrs...)
Well, as the topic says, there are occasional hiccups in some apps (games..).
For example these:
* E-UAE (enhanced Amiga emulator using SDL)
Every x seconds the app hangs, but only the graphical output. The app continues playing sound and receiving input, and then suddenly the display "catches up"..!
My guess would be, that it is either a threading issue, something that has to do with scheduling on kernel-level, or perhaps an ALSA buffer issue -- who knows? I just don't know where to start investigating...
It might be completely unrelated, but Firefox (or rather Swiftfox 2.0 which I use) also shows a similar behaviour:
My input (may it be via mousewheel or keyboard) does not trigger actions immediatly, but it *is received* and the window scrolls / the textbox fills
a few milliseconds later, according to my input...
This is my setup:
* Debian SID
* customized Kernel 2.6.19-ck1 (yep, I'm using the Con Kolivas patchset -- perhaps this is the "root of all evil"? ;-) dunno!)
* I am running various daemons and background processes, but the system load is normally at 1-3 %
* Athlon XP 2500+, 1GB RAM
* Geforce TI4200 (using the proprietary Nvidia drivers 1.0-9631)
* SB Live! using ALSA (OSS emulation layer turned off, I'm using no artsd or similar)