On Mon, 23 Sep 2024 09:44:57 GMT, Claes Redestad <redes...@openjdk.org> wrote:
> This PR suggests refactoring `ZipFile.Source.initCEN` to move as much logic > as possible into the per-entry method processor. This inner method will be > called often and JIT optimized earlier in the bootstrap sequence. > > Startup tests using the OpenJDK benchmarks.jar show a ~1ms improvement on > both my M1 macbook and my x64 wokstation, while we also improve on relevant > throughput microbenchmarks: > > > Name (size) Cnt Base Error Test Error > Unit Change > openCloseZipFile 512 15 61372.449 ± 1197.432 58081.423 ± 1751.988 > ns/op 1.06x (p = 0.000*) > openCloseZipFile 1024 15 117953.727 ± 3202.274 112548.875 ± 5126.665 > ns/op 1.05x (p = 0.001*) > openCloseZipFilex2 512 15 62141.795 ± 674.121 60520.017 ± 2438.346 > ns/op 1.03x (p = 0.017 ) > openCloseZipFilex2 1024 15 117959.071 ± 1528.426 111773.937 ± 1604.412 > ns/op 1.06x (p = 0.000*) > * = significant This pull request has been closed without being integrated. ------------- PR: https://git.openjdk.org/jdk/pull/21133
