Hey everyone,

I have found a possible regression in the newest 3.9 kernel.
Im using archlinuxarm and their linux-raspberrypi-latest kernel and I am experiencing some stuttering in xbmc while playing some h264 files which worked flawlessy on the 3.6.y kernel.

The files themselves have 1080p24 h264 video and 1510kbits/s dts audio, their size is about 20g.
The are mounted on a kernel-space mounted nfs-share using big buffersizes and udp. This has been proven to be the fastest combination, at least for me.
I have also overclocked my device to have enough power to do the software-decoding of the dts-tracks.
I know the files themselves coupled with the fact that they're being streamed over the network is kinda heavy for the pi, but it worked on 3.6.y.

Other than that, I can report a speedup on the newer kernel (noticeable faster boot-times for example).

I have reported the issue in the archlinux forum but as they only apply rather small patches to the kernel, I am starting to think this could be a kernel-specific issue.

My issue has been reproduced by at least one other member of the archlinux forum.

I'd be glad to provide more information or to help test something as I am really, really enjoing this little device :)

Greets,
CruX