User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b2pre) Gecko/20081020 Minefield/3.1b2pre Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b2pre) Gecko/20081020 Minefield/3.1b2pre When pressing the Render button successive times, there is an initial boost in performance when the jitter is triggered for several represses of the Render button (between roughly 1 and 3), after which the jitter starts to take a pathological amount of time to complete - up to 10 times the amount of time from a run without jit enabled, during which FF becomes unresponsive. Reproducible: Always Steps to Reproduce: 1. 2. 3. Actual Results: Rendering takes successively longer with each run, after the initial increase from the jitter. Expected Results: The rendering should remain quick once the jitter has been triggered.
bz is on the case