Warp is now enabled by default on Nightly, after positive feedback from users dogfooding it [0,1].
Here are just a few of the Talos/Raptor graphs showing improvements when Warp landed: - 20% on Win64 GDocs loadtime: https://mzl.la/3cp6dAs - 13% on Android Reddit SpeedIndex: https://mzl.la/2RUWdp8 - 18% on pdfpaint: https://mzl.la/2HtXb9W - 8% on tp6 JS memory: https://mzl.la/3j2VwGb - 8% on damp (devtools perf): https://mzl.la/3kLbhSM Please let us know if you notice any improvements or regressions. Thanks, The Warp team [0] https://www.reddit.com/r/firefox/comments/itib6s/dogfooding_warp_on_nightly_new_js_jit_engine/ [1] https://www.reddit.com/r/firefox/comments/iy2036/nightly_is_finally_feeling_as_fast_as_chromium/ On Tue, Sep 15, 2020 at 2:57 PM Jan de Mooij <jdemo...@mozilla.com> wrote: > > Hi all, > > The SpiderMonkey (JS) team has been working on a significant update to > our JITs called WarpBuilder (or just Warp) [0,1]. Before we enable > Warp by default in Nightly (hopefully next cycle in 83) we need your > help dogfooding it. > > Warp improves performance by reducing the amount of internal type > information that is tracked, optimizing for a broader spectrum of > cases, and by leveraging the same CacheIR optimizations used by last > year’s BaselineInterpreter work [2]. As a result, Warp has a much > simpler design and improves responsiveness and page load performance > significantly (we're seeing 5-15% improvements on many visual metrics > tests). Speedometer is about 10% faster with Warp. The JS engine also > uses less memory when Warp is enabled. > > To enable Warp in Nightly: > > 1. Update to a recent Nightly > 2. Go to about:config and set the "javascript.options.warp" pref to true > 3. Restart the browser > > We're especially interested in stability issues and real-world > performance problems. Warp is currently slower on various synthetic JS > benchmarks such as Octane (which we will continue investigating in the > coming months) but should perform well on web content. > > If you find any issues, please file bugs blocking: > > https://bugzilla.mozilla.org/show_bug.cgi?id=1613592 > > If you notice any improvements, we'd love to hear about those too. > > Finally, we want to thank our amazing contributors André Bargull and > Tom Schuster for their help implementing and porting many > optimizations. > > Turning Warp on is only our first step, and we expect to see a lot of > new optimization work over the next year as we build on this. We are > excited for what the future holds here. > > Thanks! > The Warp team > > [0] WarpBuilder still utilizes the backend of IonMonkey so we don't > feel it has earned the WarpMonkey name just yet. > [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1613592 > [2] > https://hacks.mozilla.org/2019/08/the-baseline-interpreter-a-faster-js-interpreter-in-firefox-70/ _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
