Profiling from macos?

[srenatus]

I've been going through the docs on profiling wasm executions using wasmtime, and they state that there's perf and vtune.

On macos, I don't think running perf is entirely easy (see https://github.com/docker/for-mac/issues/5500, since I don't control he VM host's kernel version, it would be best if the perf package came from the same source...).

However, it seems that vtune supports macos. But, I find that it's not an option for wasmtime-go -- Is there an underlying reason for this?

Thanks!

[alexcrichton]

Unfortunately I don't really know. You can use Instruments.app to profile everything but jit code, but you probably want to profile jit code. I have never used vtune myself, so I don't know how well it works.

[tschneidereit]

@jlb6740 and @abrown, is this something you can help with?

[jlb6740]

@srenatus Thanks for bringing this to our attention and sorry for not noticing this issue earlier. This initial patch was targeted and tested for ubuntu linux simply because it is a platform popular with many Vtune users. I'd say though that where Vtune runs and is an important for profiling, I think adding/accepting more support for those platforms would certainly be welcome.