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https://reviews.apache.org/r/31456/
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Review request for Aurora, Kevin Sweeney and Maxim Khutornenko.
Bugs: AURORA-1153
https://issues.apache.org/jira/browse/AURORA-1153
Repository: aurora
Description
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A small, but cheap performance improvement when the preemptor is engaged.
Diffs
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src/main/java/org/apache/aurora/scheduler/async/preemptor/PreemptorImpl.java
42af883721e4e5c0ae23ff65a5fb7dc285e48faa
Diff: https://reviews.apache.org/r/31456/diff/
Testing
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Before this diff:
```
o.a.a.b.SchedulingBenchmarks.ConstraintMismatchsSchedulingBenchmark.runBenchmark
avgt 100 5788175.295 ± 47410.511 ns/op
o.a.a.b.SchedulingBenchmarks.InsufficientResourcesSchedulingBenchmark.runBenchmark
avgt 100 5046038.818 ± 38636.961 ns/op
o.a.a.b.SchedulingBenchmarks.PreemptorFallbackForLargeClusterBenchmark.runBenchmark
avgt 100 64323073.493 ± 644053.437 ns/op
```
After this diff:
```
o.a.a.b.SchedulingBenchmarks.ConstraintMismatchsSchedulingBenchmark.runBenchmark
avgt 100 5783859.480 ± 37291.662 ns/op
o.a.a.b.SchedulingBenchmarks.InsufficientResourcesSchedulingBenchmark.runBenchmark
avgt 100 5259022.679 ± 30276.902 ns/op
o.a.a.b.SchedulingBenchmarks.PreemptorFallbackForLargeClusterBenchmark.runBenchmark
avgt 100 58171450.071 ± 638305.308 ns/op
```
So, about 10% for ~free.
Thanks,
Bill Farner
