67d3a78123
Motivation: PP0.equals has a bytecode size of 476. This is above the default inlining threshold of OpenJDK. Modifications: Slightly change the method to reduce the bytecode size by > 50% to 212 bytes. Result: The bytecode size is dramatically reduced, making the method a candidate for inlining. The relevant code in our application (gRPC) that relies heavily on equals comparisons, runs some ~10% faster. The Netty JMH benchmark shows no performance regression. Current 4.1: PlatformDependentBenchmark.unsafeBytesEqual 10 avgt 20 7.836 ± 0.113 ns/op PlatformDependentBenchmark.unsafeBytesEqual 50 avgt 20 16.889 ± 4.284 ns/op PlatformDependentBenchmark.unsafeBytesEqual 100 avgt 20 15.601 ± 0.296 ns/op PlatformDependentBenchmark.unsafeBytesEqual 1000 avgt 20 95.885 ± 1.992 ns/op PlatformDependentBenchmark.unsafeBytesEqual 10000 avgt 20 824.429 ± 12.792 ns/op PlatformDependentBenchmark.unsafeBytesEqual 100000 avgt 20 8907.035 ± 177.844 ns/op With this change: PlatformDependentBenchmark.unsafeBytesEqual 10 avgt 20 5.616 ± 0.102 ns/op PlatformDependentBenchmark.unsafeBytesEqual 50 avgt 20 17.896 ± 0.373 ns/op PlatformDependentBenchmark.unsafeBytesEqual 100 avgt 20 14.952 ± 0.210 ns/op PlatformDependentBenchmark.unsafeBytesEqual 1000 avgt 20 94.799 ± 1.604 ns/op PlatformDependentBenchmark.unsafeBytesEqual 10000 avgt 20 834.996 ± 17.484 ns/op PlatformDependentBenchmark.unsafeBytesEqual 100000 avgt 20 8757.421 ± 187.555 ns/op |
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