Performance Comparison Between Builtin JavaScriptCore and {N}'s one

Methodology

Run algorithms taken from Octane in a {N} and ReactNative applications on a button press. Each algorithm is run a specified number of times and the time is tracked and logged. The button is pressed numerous times and the range of the logged values is given in the table below.

var algo = 'richards';
var f = require(`./${algo}`);
var start = new Date();
for (var i = 0; i < 100; ++i) {
	f();
}
var end = new Date();
console.log(`"${algo} elapsed: ${((end.getTime() - start.getTime()))} ms`);

iOS 11.4.1 vs {N} version 4.2

Hardware:

iPhoneXModules
iPhone X 64GB
Model MQAD2GH/A
S/N DNPVVDXQJCLJ
iOS v 11.4.1 (15G77)

Algorithm	{N} (ms)	RN (ms)	Remarks
100x DeltaBlue	620 - 840	700 - 860
100x Richards	320 - 380	350 - 380
100x Crypto.encrypt	350 - 400	375 - 400
100x code-load.runCodeLoadClosure	54 - 140	55 - 110

Measure different {N} runtime versions' performance

The TnsJsPerformanceBenchmarks app can be used for comparing the performance between different versions of {N}. Just follow the installation instructions and perform multiple runs with different runtime packages while keeping track of the outcomes.