i tryed the performance apps, but i get every time a error message, that says:
error: unable to add inotify watch
power.sh: line 47: can't create /sys/devices/system/cpu/cpu0/cpufreq/scaling_govenor: noexisting directory
If i try to create these missing folders it won't work. I think i do not have the permission to create folders at this place.
@miroli: Thanks for your advice, these emulators running great
Hmm... looks like my unit also had the error message, I didn't notice it previously as it only flashed for a split second everytime I launch the app.
That's odd. My guess is that the performance.opk application is taking advantage of things enabled on the GCW0 that isn't enabled on the RG-350.
The power.sh script in performance.opk is trying to modify scaling_governor and scaling_setspeed that are supposed to be located in /sys/devices/system/cpu0/cpufreq, but, as you can probably guess, the entire cpufreq directory is missing. You can't create the directory because the directories and files in /sys/devices are tied to hardware functionality. In this specific case, CPU functionality. It looks like the kernel might've been built without dynamic cpu scaling.
Without that functionality, I don't really think that performance.opk is doing anything of any real value.
The really odd thing is that the Linux documentation from Igenic for the JZ4770 lists information on how to manipulate cpu scaling, so the CPU supports it.
There aren't any config files in /boot or anywhere else that I can find that would give hints as to how the kernel was built.
While this is odd, I don't think it's related to the GBA and PS1 slowdowns that you were seeing.