Hi Nathan, I'm sorry I can't answer your questions. I haven't heard of any regression, but I don't think we perform regular testing on RPi. Do you, by any chance, have profiles for both versions? I can't promise that someone will have time to look at them, but if someone does, it would be helpful.
Cheers, David On 5/16/17 3:18 AM, nathanrogers--- via dev-tech-js-engine-internals wrote: > Hello, > > I work on a project called Cobalt (cobalt.foo), it is an application > container designed to run web apps (namely youtube.com/tv) on embedded TV > devices. We use SpiderMonkey as our JavaScript engine, and are currently in > the process of rebasing from SpiderMonkey 24 to SpiderMonkey 45. On our > application specific benchmarks, which measure input latency, which > effectively measures total JavaScript execution time, we are noticing a > performance regression of about 40% when running in interpreted mode on a > Raspberry Pi 1, which is our reference low end platform. > > While we plan on investigating as much as possible on our side as well, I > would like to ask, is a performance regression of this magnitude to be > expected? Our configuration of SpiderMonkey, HTML application, and bindings > code are all held about as constant as they can be. If yes, then are there > any high ROI configuration (or even code) changes that we can make in order > to best mitigate this, and if no, then in what areas should we begin looking > into first? > > Thanks, > > -Nathan > _______________________________________________ > dev-tech-js-engine-internals mailing list > dev-tech-js-engine-internals@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-tech-js-engine-internals > _______________________________________________ dev-tech-js-engine-internals mailing list dev-tech-js-engine-internals@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-tech-js-engine-internals
