Heavy framedrops on 2.6.0-test11

I finally got nvrec to compile with V4L2 support, so now I can actuallycapture stuff. The V4L1 interface was borked - I kept getting errorswhen trying to set window size.

Anyway, I am getting ~600 frames dropped a minute, which is completelyunsuitable for anything more than watching a powerpoint withoutanimation. Under 2.4.22, I was getting ~1 frame dropped an hour, andwhen playing media I only dropped 20 or so.

bttv complains of frame skips, but the signal is a clean satellitesignal into the S-Video connector. I don't know how I would go aboutchecking the IRQ latency, but the hardware hasn't changed, so it doesn'tseem like anything would be affected.

Any ideas? Using the V4L2 extensions would be nice to watch TV andrecord at the same time, without using a software splitter hack.