Hi Martin,
Yes, I also have performance issue with my Cubieboard. Using one camera it seems to be fully loaded, however for me it is working. I mean the picture stream is continuous and movement triggered recording is also working.
I have tried with two camera, but it was too much for this hardware.
I planned to post a question to the Zoneminder forum regarding the use of hardware acceleration for image processing, but did not do yet.
I think the CPU is fully loaded because the zm scripts are not using any image processing feature of the hardware. Everything is done by software.
It would be nice to make use of hardware resources, but I do not know whether it is possible with the current architecture of Zoneminder.
I also have a 1GB Cubieboard and using it with Linaro.
I also installed the precompiled package. I do not know whether there is a point to build Zoneminder on the target hardware. As far as I know most of the code is written in Perl.
I do not know what kind of camera you are using. I have a cheap Chinese one (Wansview). It provides a series of pictures (15-25 jpeg images per second) and not a video stream.
I'm using the default settings of Zoneminder, just configured the camera and thats all.
I'm really sorry that I could not help too much.
Probably you can get some more help on the Zoneminder forum.
Kind regards,
Laszlo