github/jgit - jgit - 帆软第三方插件仓库

Author	SHA1	Message	Date
Matthias Sohn	452c38cd22	Run JMH benchmarks using bazel The benchmarks can be built and run using bazel by running: $ bazel run //org.eclipse.jgit.benchmarks:benchmarks Change-Id: I6679750eaa0f2be30ed9d45036e013b0ea4fcc86 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>	5 years ago
Matthias Sohn	06de3a1dd7	Benchmark for creating files and FileSnapshots Change-Id: I953fd8b6b9743b0b9cada244331253eb2121784d Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>	5 years ago
Matthias Sohn	25a611ccc5	Implement benchmark for looking up FileStore of a given Path Results on Mac OS 10.14.6 using APFS: Result "org.eclipse.jgit.benchmarks.LookupFileStoreBenchmark.testLookupFileStore": 44583.277 ±(99.9%) 2666.096 ns/op [Average] (min, avg, max) = (43707.073, 44583.277, 45320.685), stdev = 692.377 CI (99.9%): [41917.181, 47249.373] (assumes normal distribution) Secondary result "org.eclipse.jgit.benchmarks.LookupFileStoreBenchmark.testLookupFileStore:·stack": Stack profiler: ....[Thread state distributions]........................................................ 100.0% RUNNABLE ....[Thread state: RUNNABLE]............................................................. 42.5% 42.5% sun.nio.fs.UnixNativeDispatcher.realpath0 37.9% 37.9% sun.nio.fs.UnixNativeDispatcher.stat0 11.0% 11.0% sun.nio.fs.BsdNativeDispatcher.getfsstat 7.6% 7.6% sun.nio.fs.BsdNativeDispatcher.fsstatEntry 0.7% 0.7% sun.nio.fs.BsdNativeDispatcher.endfsstat 0.1% 0.1% sun.nio.fs.UnixPath.initOffsets 0.0% 0.0% sun.nio.fs.UnixFileAttributes.get 0.0% 0.0% java.util.zip.Inflater.inflateBytes 0.0% 0.0% sun.misc.Unsafe.compareAndSwapInt 0.0% 0.0% sun.nio.fs.BsdFileStore.findMountEntry This shows that FS.attrCacheByPath should be useful to reduce overhead of looking up the FileStore of a given file. Change-Id: I7213086b42e0453f0ee149660d507dac2a4644cc Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>	5 years ago
Matthias Sohn	9a638b08d3	JMH benchmark for SimpleLruCache See [1] for JMH documentation and [2] how to use JMH in Eclipse. The benchmarks pom currently cannot use the JGit parent pom due to an ecj bug [3] regarding annotation processing. Hence for now do not inherit from the JGit parent pom and copy the compiler plugin configuration for javac from the parent pom. After running the Maven build the benchmark can be run using Maven: $ java -jar org.eclipse.jgit.benchmarks/target/benchmarks.jar or in Eclipse by running the main method of the SimpleLruCacheBenchmark class. [1] https://openjdk.java.net/projects/code-tools/jmh/ [2] http://alblue.bandlem.com/Page/3/index.html [3] https://eclip.se/532029 CQ: 20517 CQ: 20518 Change-Id: Idca8a9e0980f0b8a9c741c4c9e97d03c62f07c8d Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>	5 years ago