Some days back (in FF12 development) when I tested Nightly on Peacekeeper v2 benchmark, I got this result: http://peacekeeper.futuremark.com/results?key=4n89 As you can see it has renderGrid01 around 100 fps. But now with current Nightly, I am not getting more than 76 fps, My faults is not reporting it early. Regression range finding is difficult but I try to find it by downloading builds from tinder box, this result link is of 15 Jan, so after that some happen. I will try to report back about regression as soon as possible. Any further info, should I provide? Also this attached URL is replica of Peacekeeper v1 but even in it I am getting 80 fps, so I think v1 and v2 benchmark are nearly identical.
FF 14.0a1 (nightly for linux 64-bit, 2012-03-28) can not pass the test: "Web Workers allow the browsers to work on multiple tasks simultaneously. This test performs an intensive contrast manipulation to two images at the same time."