See comments below - PNaCl is not finished, and we don't know what performance and portability it will provide when it is. It is also not close to being standar

See comments below - PNaCl is not finished, and we don't know what performance and portability it will provide when it is. It is also not close to being standardizable since it is in flux. Do you have numbers for the "unacceptable speed penalty" JavaScript imposes on compiled code? That's an honest question, I am curious to see benchmarks about that.