bad benchmark

[DarkPark]

node bin/benchmark.js

gives

Error: Cannot find module '../dist/sass.min.js'

and there is really no such file
so I've corrected it to sass.js and got this:

sass.js: 
node-sass: 
Fastest is 

[rodneyrehm]

I wasn't aware this benchmark thingie still existed. you'd have to use sass.sync.js, though

[DarkPark]

ok
corrected require statement to sass.sync.js
output is the same

[rodneyrehm]

Fixed the simple benchmark thingie… thx for the pointer :)

➜  node bin/benchmark.js
sass.js x 13,352 ops/sec ±1.38% (79 runs sampled)
node-sass x 15,768 ops/sec ±1.64% (76 runs sampled)
Fastest is node-sass

[rodneyrehm]

uhm… those results can't be correct, right? that would mean the emscripted library is almost as fast as the native binding… huh?

[DarkPark]

That was the idea behind Emscripten LLVM-to-JavaScript compiler :)
Seems it's a very good compiler.

[rodneyrehm]

The benchmark was reading the file, but not converting it to string. What it was testing is the input error handling, instead of the compiler.

➜  node bin/benchmark.js
sass.js x 22.61 ops/sec ±37.39% (67 runs sampled)
node-sass x 183 ops/sec ±1.21% (81 runs sampled)
Fastest is node-sass

That makes node-sass about 9x faster than sass.js.

[DarkPark]

rather big difference
according to this benchmark pure js LESS implementation is only twice slower than libsass

[rodneyrehm]

These benchmarks don't compare. bin/benchmark.js is basically running the same C++ code once via the native binding, once via emscripten. LESS is a completely different code base.