Yes, these benchmarks by Mozilla are biased, but I wouldn't be surprised if Asm.js actually performs as well as Dalvik for 2 reasons. First, the Dalvik VM has a

Yes, these benchmarks by Mozilla are biased, but I wouldn't be surprised if Asm.js actually performs as well as Dalvik for 2 reasons. First, the Dalvik VM has always been optimized for memory footprint and not speed. Secondly, Google has focused their recent performance optimizations on the NDK, the platform that everyone uses when performance is critical. I think Google feels Dalvik is good enough for everything else. I've looked at every change log since Android 2.0 and the last time I saw any performance tweaks to Dalvik was with the addition of JIT in 2.2. Dalvik is about 3x slower than Oracle's Hotspot[1]. Until Google moves Lars Bak to the Android team or buys Myriad for their Dalvik Turbo, I don't see this changing anytime soon. [1] http://dl.acm.org/citation.cfm?id=2388956 http://dl.acm.org/citation.cfm?id=2388956