Nanoscope: Method-Tracing Tool for Android

by battwell • 8 years ago

25 6 8 years ago

estsauver• 8 years ago

One of the things that I would love to see would be an easy way to do a before/after accounting on some visual flourishes. "How much time does this take to do X" and check in something akin to a profile in parallel to source control. "Is this fast" is something that can be really hard to answer in retrospec and I'd love to have a tool that does something like that for Android, and it seems like nanoscope might be lightweight enough for it.

battwell4• 8 years ago

We've been building up CI tooling on top of Nanoscope. The short term goal for this is: make sure that none of our internal libraries (analytics, experimentation, etc) contribute a significant percentage of the time it takes to respond to any tap in the app. We have a lot of internal mobile libraries, so preventing perf regressions in them is a big rock.

If our CI efforts prove stable, then what you're suggesting should also be possible, if I understand it correctly.

ivankolev• 8 years ago

Looks good but custom fork of Android is required

battwell4• 8 years ago

True. Fortunately, the custom fork is very easy to install if you have a supported device (right now just 6P.

Just run `nanoscope flash`.

battwell4• 8 years ago

We're also working on creating a build for the emulator.

See https://github.com/uber/nanoscope/issues/53

battwell4• 8 years ago

Quick update here: You can now use Nanoscope without flashing a device by launching the Nanoscope Emulator.

This feature was largely implemented as a result of on hackernews and reddit.

Nanoscope: Method-Tracing Tool for Android

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