I have run some very simple tests and performance is very close for real world complex apps, ~10% faster for an express hello world and ~10% slower for http stack only.

Basically TF is at parity on average but slower for code like the node core that was highly optimized to the particularities of crankshaft.

Hopefully npm 5.3.0 actually works since 5.0.0 was completely broken for me.

v7.10.0

Test suite for real world app

real 0m29.669s user 0m5.376s sys 0m0.356s

v8.3.0

Test suite for real world app

real 0m30.180s user 0m5.420s sys 0m0.220s

v7.10.0

Express Hello World

Requests per second: 6751.08 [#/sec] (mean)

HTTP Hello World

Requests per second: 13407.31 [#/sec] (mean)

v8.3.0

Express Hello World

Requests per second: 7734.33 [#/sec] (mean)

HTTP Hello World

Requests per second: 12601.42 [#/sec] (mean)