commit | 634720648d78f79c9c2705a7d4cfeed7ef3e173c | [log] [tgz] |
---|---|---|
author | Dan Willemsen <dwillemsen@google.com> | Tue Oct 30 21:24:23 2018 -0700 |
committer | Dan Willemsen <dwillemsen@google.com> | Tue Oct 30 21:24:23 2018 -0700 |
tree | 0745cf0f60f8d2398fbbe5214187e392c5dbafd0 | |
parent | 0d9ffeaac880401ee18e4f33bddc3a76b0faf372 [diff] |
Improve regen performance by setting cpu affinity For aosp/master aosp_arm64-eng, this brings the times for regen down by nearly a second: glob time (regen) 0.52 -> 0.52 shell time (regen) 2.25 -> 1.39 stat time (regen) 0.54 -> 0.44 Some of our internal targets show larger decreases: glob time (regen) 0.81 -> 0.83 shell time (regen) 4.84 -> 2.99 stat time (regen) 1.11 -> 0.95 Change-Id: I2c52de0643a3a424e9866017cc53dde4a24a40ec
kati is an experimental GNU make clone. The main goal of this tool is to speed-up incremental build of Android.
Currently, kati does not offer a faster build by itself. It instead converts your Makefile to a ninja file.
For Android-N+, ckati and ninja is used automatically. There is a prebuilt checked in under prebuilts/build-tools that is used.
All Android's build commands (m, mmm, mmma, etc.) should just work.
Set up kati:
% cd ~/src % git clone https://github.com/google/kati % cd kati % make
Build Android:
% cd <android-directory> % source build/envsetup.sh % lunch <your-choice> % ~/src/kati/m2n --kati_stats % ./ninja.sh
You need ninja in your $PATH.
% ./ninja.sh -t clean
Note ./ninja.sh passes all parameters to ninja.
For example, the following is equivalent to "make cts":
% ./ninja.sh cts
Or, if you know the path you want, you can do:
% ./ninja.sh out/host/linux-x86/bin/adb