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| author | 2022-01-28 11:30:16 -0800 | |
|---|---|---|
| committer | 2022-01-28 11:39:47 -0800 | |
| commit | 0849c14aea2eb11479ddffb50c5467f18fd42da9 (patch) | |
| tree | e9989f69f197df89ff0caa4f825b76a7d4bdc6f4 /rust/compiler.go | |
| parent | 8bb0d8f55d6ba71e82d94417ba4417d521ca29ed (diff) | |
Limit JIT tier for javac
javac is generally a short-lived JVM invocation that doesn't greatly
benefit from deep JIT tiering. As such, favor faster startup time
by limiting to tier 1 JIT for javac execution. This should greatly
reduce overall CPU usage from Java compilation for an arbitrary
Android build (~20%), and deliver a small but modest improvement in
overall Java build times (~5%).
Representative incremental build times with this change:
* real 18m3.507s
* user 563m4.838s
and without:
* real 19m11.909s
* user 751m27.790s
Follow-up changes will apply similar flags for other short-lived JVM
build commands.
Bug: 205303544
Test: m
Change-Id: Ic6315b976063f4330902930a6cf5e5cb394c554c
Diffstat (limited to 'rust/compiler.go')
0 files changed, 0 insertions, 0 deletions