Is telemetry synchronous?

[janpio]

I noticed some unexpected slowness in the CLI. Is it possible that telemetry calls are sync?

See the following output:

E:\Projects\throwaway\x4wTest (master -> origin) ([email protected])
λ cordova telemetry on
Thanks for opting into telemetry to help us improve cordova.

E:\Projects\throwaway\x4wTest (master -> origin) ([email protected])
λ cordova -v | gnomon
   2.1843s   8.1.2 ([email protected])
   0.0016s

     Total   2.1887s

E:\Projects\throwaway\x4wTest (master -> origin) ([email protected])
λ cordova telemetry off
You have been opted out of telemetry. To change this, run: cordova telemetry on.

E:\Projects\throwaway\x4wTest (master -> origin) ([email protected])
λ cordova -v | gnomon
   1.2091s   8.1.2 ([email protected])
   0.0017s

     Total   1.2138s

(gnomon is the tool that measures the time it takes for each line of the output to appear, install via npm install -g gnomon.)

---

λ cordova -v
8.1.2 ([email protected])

[raphinesse]

The tracking should run asynchronously in a new process: yeoman/insight#34

[raphinesse]

Well, the question in the title is answered. Should we close this or rename it to something more actionable?

[janpio]

Why is the CLI slower when telemtry is enabled then?
Or does it still wait for that process to finish before returning to the console?

[raphinesse]

I also experience the difference. 1 s without telemetry vs 2 s with. I don't see any offenders in a 0x flame graph which does suggests that a child process is responsible for the delay. However, the child process should not be waited upon, the way it is handled:
https://github.com/yeoman/insight/blob/cb32c1a043c54d50ef1aff04c7a70f761bcb8035/lib/index.js#L85-L88

So it's maybe just the overhead of spawning a new Node.js process and doing the IPC 🤷‍♂️

I think the only thing we could do is to create a minimal example that showcases this and report it at the inquirer repo. But then again, that's what yeoman/insight#34 seems to be.

[dpogue]

We're removed telemetry support, so closing this issue