Performance myth busters (Android Dev Summit '19)

[@oziomaogbe8665]

Was expecting to hear about Enums vs Static Constants.

[@verofero]

i believe it was mentioned in i/o 2018 or 2017 ..but basically Enums used to be bad for memory but now with new powerful devices it's ok to use them

[@gabrielfeo13]

From I/O 2018: kzbin.info/www/bejne/f6OwqGqDesx0es0 Rewind a few minutes for details

[@landerlyoung9570]

@@verofero Not only do we have better devices, but also better JVM (ART), which allocates memory much fast :)

[@robertwilliams5979]

Don't think it was mentioned what min SDK was used for the multidex performance tests. My understanding is that legacy multidex (minSdk < 21) is much worse than ART's multidex, so would be interesting to see how this compares.

[@SoulReaperDan1]

I like these guys presenting style, real chill

[@am5a03]

How do you profile a release build?

[@David-yz9mb]

And why this don't happen automatically?

[@Firespirit233]

why are fragments so slow?

[@gregorysech7981]

Is there a white paper about those experiments? What are the percentiles and setup of those experiments?

[@javalc6]

I'd the same question in mind. A white paper will be really appreciated by develops

[@TheDnaitsirc]

For years they said in official docs that getters were slower than direct access. A change in the VM shouldn't be enough to say "busted" as lightly

[@acheeblessyou]

low-key, high-level pun at 11:04

[@cutiko]

This myths reminds me when as a teenager some one will came up with a weird think about a video game "Did you know you can make Shao Khan perform a fatality mid round?", where did kids come up with those? Where does devs come up with this?

[@David-yz9mb]

Why do you say there is not performance difference when the Kotlin version of Drive takes 0,002ms more to start up?

[@pxnx]

note noteably much

[@bjugdbjk]

I m busted.....so good the talk.... combination of u both s super good....

[@boom_shankar]

Busted :DDD

[@sylphion-123]

If you have more than 400k LOC in Kotlin, then you will have more than 200% of compile time.

[@SoulReaperDan1]

If you can prove this, I think Jetbrains would love to hear from you

[@UnleashedProPlays]

First