We recently ran an experiment using KSP at airbnb ...

# ksp

[Ben Schwab]

We recently ran an experiment using KSP at airbnb I did some analysis on the results:
https://docs.google.com/document/d/1zqQ5cMeucvAZtzN94YIcryvaNK_8KiJwF0Uyof4x5rw/edit#

Quick summary:
• ~660/900 modules were eligible to use ksp
• KSP helped most builds by about 10% in most percentiles, but dropped the performance of P95 builds
P95 drop in performance is likely from remote cache incompatibility and worse incremental compilation than kapt (ksp.incremental.intermodule=true just landed to address this)

[Ting-Yuan Huang]

Thanks for sharing! The release containing ksp.incremental.intermodule is coming in a couple of hours. Please stay tuned 😄

[Ben Schwab]

Excited to try it out!

[Ben Schwab]

Is the remote cache compatibility able to get prioritized https://github.com/google/ksp/issues/490? I think it’s just a one liner, and should make a big difference in build performance for non-incremental builds.

[Ting-Yuan Huang]

Yes. We'll prioritize it and make sure the fix included in next release.