XenoAmess edited a comment on pull request #118:
URL: https://github.com/apache/commons-io/pull/118#issuecomment-637035997
@garydgregory
Performance test done.
**Conclusion:**
In cases for small content readers, the new function is slightly faster.
but in cases for large content, the new function can be 6.5 times faster.
```
D:\workspace\commons-io>mvn -Pbenchmark
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< commons-io:commons-io
>------------------------
[INFO] Building Apache Commons IO 2.7.1-SNAPSHOT
[INFO] --------------------------------[ jar
]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ commons-io ---
[INFO] Deleting D:\workspace\commons-io\target
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M2:enforce (enforce-maven-version) @
commons-io ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M2:enforce (enforce-maven-3) @
commons-io ---
[INFO]
[INFO] --- apache-rat-plugin:0.13:check (rat-check) @ commons-io ---
[INFO] Enabled default license matchers.
[INFO] Will parse SCM ignores for exclusions...
[INFO] Parsing exclusions from D:\workspace\commons-io\.gitignore
[INFO] Finished adding exclusions from SCM ignore files.
[INFO] 73 implicit excludes (use -debug for more details).
[INFO] 12 explicit excludes (use -debug for more details).
[INFO] 373 resources included (use -debug for more details)
[INFO] Rat check: Summary over all files. Unapproved: 0, unknown: 0,
generated: 0, approved: 364 licenses.
[INFO]
[INFO] --- build-helper-maven-plugin:3.0.0:parse-version (parse-version) @
commons-io ---
[INFO]
[INFO] --- maven-antrun-plugin:1.8:run (javadoc.resources) @ commons-io ---
[INFO] Executing tasks
main:
[copy] Copying 2 files to
D:\workspace\commons-io\target\apidocs\META-INF
[INFO] Executed tasks
[INFO]
[INFO] --- maven-remote-resources-plugin:1.5:process
(process-resource-bundles) @ commons-io ---
[INFO]
[INFO] --- buildnumber-maven-plugin:1.4:create (default) @ commons-io ---
[INFO] Executing: cmd.exe /X /C "git rev-parse --verify HEAD"
[INFO] Working directory: D:\workspace\commons-io
[INFO] Storing buildNumber: 73dc0ff3e6d79ab88f1ed0d253d52cb6da0dffa5 at
timestamp: 1591034434847
[INFO] Storing buildScmBranch: refine_contentEquals
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @
commons-io ---
[INFO] Using 'iso-8859-1' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory
D:\workspace\commons-io\src\main\resources
[INFO] Copying 2 resources to META-INF
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @
commons-io ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 158 source files to D:\workspace\commons-io\target\classes
[INFO]
/D:/workspace/commons-io/src/main/java/org/apache/commons/io/input/ClassLoaderObjectInputStream.java:
Some input files use or override a deprecated API.
[INFO]
/D:/workspace/commons-io/src/main/java/org/apache/commons/io/input/ClassLoaderObjectInputStream.java:
Recompile with -Xlint:deprecation for details.
[INFO]
/D:/workspace/commons-io/src/main/java/org/apache/commons/io/IOExceptionList.java:
D:\workspace\commons-io\src\main\java\org\apache\commons\io\IOException
List.java uses unchecked or unsafe operations.
[INFO]
/D:/workspace/commons-io/src/main/java/org/apache/commons/io/IOExceptionList.java:
Recompile with -Xlint:unchecked for details.
[INFO]
[INFO] --- maven-bundle-plugin:4.2.1:manifest (bundle-manifest) @ commons-io
---
[INFO]
[INFO] --- animal-sniffer-maven-plugin:1.18:check (checkAPIcompatibility) @
commons-io ---
[INFO] Checking unresolved references to
org.codehaus.mojo.signature:java18:1.0
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\TeeReader.java:158:
Covariant return type change detected: java.nio.Buffer java.nio.Char
Buffer.position(int) has been changed to java.nio.CharBuffer
java.nio.CharBuffer.position(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\TeeReader.java:158:
Covariant return type change detected: java.nio.Buffer java.nio.Char
Buffer.limit(int) has been changed to java.nio.CharBuffer
java.nio.CharBuffer.limit(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\TeeReader.java:162:
Covariant return type change detected: java.nio.Buffer java.nio.Char
Buffer.position(int) has been changed to java.nio.CharBuffer
java.nio.CharBuffer.position(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\TeeReader.java:162:
Covariant return type change detected: java.nio.Buffer java.nio.Char
Buffer.limit(int) has been changed to java.nio.CharBuffer
java.nio.CharBuffer.limit(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\TeeReader.java:162:
Covariant return type change detected: java.nio.Buffer java.nio.Char
Buffer.position(int) has been changed to java.nio.CharBuffer
java.nio.CharBuffer.position(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\TeeReader.java:162:
Covariant return type change detected: java.nio.Buffer java.nio.Char
Buffer.limit(int) has been changed to java.nio.CharBuffer
java.nio.CharBuffer.limit(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\ReaderInputStream.java:125:
Covariant return type change detected: java.nio.Buffer java.
nio.CharBuffer.flip() has been changed to java.nio.CharBuffer
java.nio.CharBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\ReaderInputStream.java:127:
Covariant return type change detected: java.nio.Buffer java.
nio.ByteBuffer.flip() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\ReaderInputStream.java:207:
Covariant return type change detected: java.nio.Buffer java.
nio.CharBuffer.position(int) has been changed to java.nio.CharBuffer
java.nio.CharBuffer.position(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\ReaderInputStream.java:209:
Covariant return type change detected: java.nio.Buffer java.
nio.CharBuffer.flip() has been changed to java.nio.CharBuffer
java.nio.CharBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\ReaderInputStream.java:213:
Covariant return type change detected: java.nio.Buffer java.
nio.ByteBuffer.flip() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:74:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.flip() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:128:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.flip() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:222:
Covariant return type change detected: java.nio.Buffer
java.nio.CharBuffer.mark() has been changed to java.nio.CharBuffer
java.nio.CharBuffer.mark()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:223:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.mark() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.mark()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:245:
Covariant return type change detected: java.nio.Buffer
java.nio.CharBuffer.rewind() has been changed to java.nio.CharBuffer
java.nio.CharBuffer.rewind()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:246:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.rewind() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.rewind()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:247:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:249:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.rewind() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.rewind()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:250:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\input\CharSequenceInputStream.java:258:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\output\WriterOutputStream.java:283:
Covariant return type change detected: java.nio.Buffer jav
a.nio.ByteBuffer.flip() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\output\WriterOutputStream.java:309:
Covariant return type change detected: java.nio.Buffer jav
a.nio.CharBuffer.rewind() has been changed to java.nio.CharBuffer
java.nio.CharBuffer.rewind()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\output\WriterOutputStream.java:331:
Covariant return type change detected: java.nio.Buffer jav
a.nio.ByteBuffer.flip() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\output\WriterOutputStream.java:340:
Covariant return type change detected: java.nio.Buffer jav
a.nio.CharBuffer.rewind() has been changed to java.nio.CharBuffer
java.nio.CharBuffer.rewind()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\IOUtils.java:987:
Covariant return type change detected: java.nio.Buffer java.nio.CharBuffer.f
lip() has been changed to java.nio.CharBuffer java.nio.CharBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\IOUtils.java:2008:
Covariant return type change detected: java.nio.Buffer java.nio.ByteBuffer.
position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\IOUtils.java:2009:
Covariant return type change detected: java.nio.Buffer java.nio.ByteBuffer.
limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\FileUtils.java:1094:
Covariant return type change detected: java.nio.Buffer java.nio.ByteBuffe
r.flip() has been changed to java.nio.ByteBuffer java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\FileUtils.java:1096:
Covariant return type change detected: java.nio.Buffer java.nio.ByteBuffe
r.clear() has been changed to java.nio.ByteBuffer java.nio.ByteBuffer.clear()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\FileUtils.java:1094:
Covariant return type change detected: java.nio.Buffer java.nio.ByteBuffe
r.flip() has been changed to java.nio.ByteBuffer java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\FileUtils.java:1096:
Covariant return type change detected: java.nio.Buffer java.nio.ByteBuffe
r.clear() has been changed to java.nio.ByteBuffer java.nio.ByteBuffer.clear()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\FileUtils.java:1094:
Covariant return type change detected: java.nio.Buffer java.nio.ByteBuffe
r.flip() has been changed to java.nio.ByteBuffer java.nio.ByteBuffer.flip()
[INFO]
D:\workspace\commons-io\src\main\java\org\apache\commons\io\FileUtils.java:1096:
Covariant return type change detected: java.nio.Buffer java.nio.ByteBuffe
r.clear() has been changed to java.nio.ByteBuffer java.nio.ByteBuffer.clear()
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:testResources
(default-testResources) @ commons-io ---
[INFO] Using 'iso-8859-1' encoding to copy filtered resources.
[INFO] Copying 45 resources
[INFO] Copying 2 resources to META-INF
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) @
commons-io ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 158 source files to
D:\workspace\commons-io\target\test-classes
[INFO]
/D:/workspace/commons-io/src/test/java/org/apache/commons/io/output/FileWriterWithEncodingTest.java:
Some input files use or override a deprecated API.
[INFO]
/D:/workspace/commons-io/src/test/java/org/apache/commons/io/output/FileWriterWithEncodingTest.java:
Recompile with -Xlint:deprecation for details.
[INFO]
[INFO] --- jacoco-maven-plugin:0.8.5:prepare-agent (prepare-agent) @
commons-io ---
[INFO] argLine set to
-javaagent:C:\\Users\\xenoa\\.m2\\repository\\org\\jacoco\\org.jacoco.agent\\0.8.5\\org.jacoco.agent-0.8.5-runtime.jar=destfile=D:\\workspa
ce\\commons-io\\target\\jacoco.exec
[INFO]
[INFO] --- maven-surefire-plugin:2.22.2:test (default-test) @ commons-io ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- exec-maven-plugin:1.6.0:exec (benchmark) @ commons-io ---
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.openjdk.jmh.util.Utils
(file:/C:/Users/xenoa/.m2/repository/org/openjdk/jmh/jmh-core/1.21/jmh-core-1.21.jar)
to field j
ava.io.PrintStream.charOut
WARNING: Please consider reporting this to the maintainers of
org.openjdk.jmh.util.Utils
WARNING: Use --illegal-access=warn to enable warnings of further illegal
reflective access operations
WARNING: All illegal access operations will be denied in a future release
# JMH version: 1.21
# VM version: JDK 13.0.2, OpenJDK 64-Bit Server VM, 13.0.2+8
# VM invoker: C:\jdk-13.0.2+8\bin\java.exe
# VM options: <none>
# Warmup: 5 iterations, 10 s each
# Measurement: 5 iterations, 10 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Average time, time/op
# Benchmark:
org.apache.commons.io.performance.IOUtilsContentEqualsPerformanceTest.testContentEqualsForFileNew
# Run progress: 0.00% complete, ETA 00:33:20
# Fork: 1 of 5
# Warmup Iteration 1: 8403699.664 ns/op
# Warmup Iteration 2: 8342097.081 ns/op
# Warmup Iteration 3: 7431033.061 ns/op
# Warmup Iteration 4: 7714089.746 ns/op
# Warmup Iteration 5: 7338344.241 ns/op
Iteration 1: 7459707.308 ns/op
Iteration 2: 8792593.849 ns/op
Iteration 3: 10726891.104 ns/op
Iteration 4: 8550254.786 ns/op
Iteration 5: 8001410.312 ns/op
# Run progress: 5.00% complete, ETA 00:31:55
# Fork: 2 of 5
# Warmup Iteration 1: 7848885.804 ns/op
# Warmup Iteration 2: 7489775.075 ns/op
# Warmup Iteration 3: 7328874.652 ns/op
# Warmup Iteration 4: 7308097.663 ns/op
# Warmup Iteration 5: 7298969.001 ns/op
Iteration 1: 7347818.649 ns/op
Iteration 2: 7251497.464 ns/op
Iteration 3: 7366967.231 ns/op
Iteration 4: 7420473.516 ns/op
Iteration 5: 7517702.630 ns/op
# Run progress: 10.00% complete, ETA 00:30:14
# Fork: 3 of 5
# Warmup Iteration 1: 7403000.592 ns/op
# Warmup Iteration 2: 7237561.577 ns/op
# Warmup Iteration 3: 7328035.212 ns/op
# Warmup Iteration 4: 7310369.686 ns/op
# Warmup Iteration 5: 7258066.255 ns/op
Iteration 1: 7387172.526 ns/op
Iteration 2: 7278674.400 ns/op
Iteration 3: 7307894.887 ns/op
Iteration 4: 7363340.103 ns/op
Iteration 5: 7241780.811 ns/op
# Run progress: 15.00% complete, ETA 00:28:33
# Fork: 4 of 5
# Warmup Iteration 1: 7549794.264 ns/op
# Warmup Iteration 2: 7209186.671 ns/op
# Warmup Iteration 3: 7680527.859 ns/op
# Warmup Iteration 4: 7870276.336 ns/op
# Warmup Iteration 5: 8008019.376 ns/op
Iteration 1: 7868122.956 ns/op
Iteration 2: 8014526.603 ns/op
Iteration 3: 7610742.998 ns/op
Iteration 4: 7339908.804 ns/op
Iteration 5: 7466605.970 ns/op
# Run progress: 20.00% complete, ETA 00:26:52
# Fork: 5 of 5
# Warmup Iteration 1: 8062262.933 ns/op
# Warmup Iteration 2: 7888885.647 ns/op
# Warmup Iteration 3: 8092374.353 ns/op
# Warmup Iteration 4: 7535815.813 ns/op
# Warmup Iteration 5: 8376873.032 ns/op
Iteration 1: 7641931.603 ns/op
Iteration 2: 8134969.268 ns/op
Iteration 3: 8823474.603 ns/op
Iteration 4: 9548556.489 ns/op
Iteration 5: 8888150.622 ns/op
Result
"org.apache.commons.io.performance.IOUtilsContentEqualsPerformanceTest.testContentEqualsForFileNew":
7934046.780 ?99.9%) 644395.868 ns/op [Average]
(min, avg, max) = (7241780.811, 7934046.780, 10726891.104), stdev =
860250.047
CI (99.9%): [7289650.912, 8578442.648] (assumes normal distribution)
# JMH version: 1.21
# VM version: JDK 13.0.2, OpenJDK 64-Bit Server VM, 13.0.2+8
# VM invoker: C:\jdk-13.0.2+8\bin\java.exe
# VM options: <none>
# Warmup: 5 iterations, 10 s each
# Measurement: 5 iterations, 10 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Average time, time/op
# Benchmark:
org.apache.commons.io.performance.IOUtilsContentEqualsPerformanceTest.testContentEqualsNew2
# Run progress: 25.00% complete, ETA 00:25:12
# Fork: 1 of 5
# Warmup Iteration 1: 427439412.500 ns/op
# Warmup Iteration 2: 411941108.000 ns/op
# Warmup Iteration 3: 415405856.000 ns/op
# Warmup Iteration 4: 408246064.000 ns/op
# Warmup Iteration 5: 381986007.407 ns/op
Iteration 1: 372559803.704 ns/op
Iteration 2: 372221244.444 ns/op
Iteration 3: 394561276.923 ns/op
Iteration 4: 410318660.000 ns/op
Iteration 5: 417270562.500 ns/op
# Run progress: 30.00% complete, ETA 00:23:36
# Fork: 2 of 5
# Warmup Iteration 1: 385519323.077 ns/op
# Warmup Iteration 2: 341417310.000 ns/op
# Warmup Iteration 3: 337620636.667 ns/op
# Warmup Iteration 4: 337741280.000 ns/op
# Warmup Iteration 5: 322947274.194 ns/op
Iteration 1: 334579670.000 ns/op
Iteration 2: 324313664.516 ns/op
Iteration 3: 349864203.448 ns/op
Iteration 4: 345000172.414 ns/op
Iteration 5: 338797430.000 ns/op
# Run progress: 35.00% complete, ETA 00:21:56
# Fork: 3 of 5
# Warmup Iteration 1: 424080325.000 ns/op
# Warmup Iteration 2: 409074288.000 ns/op
# Warmup Iteration 3: 397216476.923 ns/op
# Warmup Iteration 4: 379384881.481 ns/op
# Warmup Iteration 5: 406599224.000 ns/op
Iteration 1: 344006786.667 ns/op
Iteration 2: 318393962.500 ns/op
Iteration 3: 326383164.516 ns/op
Iteration 4: 326728512.903 ns/op
Iteration 5: 339791536.667 ns/op
# Run progress: 40.00% complete, ETA 00:20:17
# Fork: 4 of 5
# Warmup Iteration 1: 359791750.000 ns/op
# Warmup Iteration 2: 344011470.000 ns/op
# Warmup Iteration 3: 317443868.750 ns/op
# Warmup Iteration 4: 366668921.429 ns/op
# Warmup Iteration 5: 340980226.667 ns/op
Iteration 1: 362224464.286 ns/op
Iteration 2: 329631980.645 ns/op
Iteration 3: 328959990.323 ns/op
Iteration 4: 331093680.645 ns/op
Iteration 5: 328042438.710 ns/op
# Run progress: 45.00% complete, ETA 00:18:37
# Fork: 5 of 5
# Warmup Iteration 1: 328533070.968 ns/op
# Warmup Iteration 2: 321877478.125 ns/op
# Warmup Iteration 3: 315723571.875 ns/op
# Warmup Iteration 4: 323838003.226 ns/op
# Warmup Iteration 5: 325582848.387 ns/op
Iteration 1: 322872964.516 ns/op
Iteration 2: 320972165.625 ns/op
Iteration 3: 322146753.125 ns/op
Iteration 4: 320983556.250 ns/op
Iteration 5: 332471216.129 ns/op
Result
"org.apache.commons.io.performance.IOUtilsContentEqualsPerformanceTest.testContentEqualsNew2":
344567594.458 ?99.9%) 21104733.591 ns/op [Average]
(min, avg, max) = (318393962.500, 344567594.458, 417270562.500), stdev =
28174215.532
CI (99.9%): [323462860.868, 365672328.049] (assumes normal distribution)
# JMH version: 1.21
# VM version: JDK 13.0.2, OpenJDK 64-Bit Server VM, 13.0.2+8
# VM invoker: C:\jdk-13.0.2+8\bin\java.exe
# VM options: <none>
# Warmup: 5 iterations, 10 s each
# Measurement: 5 iterations, 10 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Average time, time/op
# Benchmark:
org.apache.commons.io.performance.IOUtilsContentEqualsPerformanceTest.testContentEqualsOld
# Run progress: 50.00% complete, ETA 00:16:57
# Fork: 1 of 5
# Warmup Iteration 1: 8040772.910 ns/op
# Warmup Iteration 2: 7850546.468 ns/op
# Warmup Iteration 3: 8366507.191 ns/op
# Warmup Iteration 4: 8919272.193 ns/op
# Warmup Iteration 5: 8934492.411 ns/op
Iteration 1: 9849140.059 ns/op
Iteration 2: 10280016.496 ns/op
Iteration 3: 9377572.540 ns/op
Iteration 4: 8634857.550 ns/op
Iteration 5: 8796502.111 ns/op
# Run progress: 55.00% complete, ETA 00:15:14
# Fork: 2 of 5
# Warmup Iteration 1: 9196890.441 ns/op
# Warmup Iteration 2: 8651530.769 ns/op
# Warmup Iteration 3: 9130613.504 ns/op
# Warmup Iteration 4: 9528571.075 ns/op
# Warmup Iteration 5: 8603469.046 ns/op
Iteration 1: 8649056.612 ns/op
Iteration 2: 8740562.707 ns/op
Iteration 3: 8636735.807 ns/op
Iteration 4: 8658414.545 ns/op
Iteration 5: 9077745.554 ns/op
# Run progress: 60.00% complete, ETA 00:13:32
# Fork: 3 of 5
# Warmup Iteration 1: 9210640.074 ns/op
# Warmup Iteration 2: 7950668.124 ns/op
# Warmup Iteration 3: 8049352.132 ns/op
# Warmup Iteration 4: 7906520.949 ns/op
# Warmup Iteration 5: 8193835.545 ns/op
Iteration 1: 7833574.706 ns/op
Iteration 2: 8025837.640 ns/op
Iteration 3: 8621776.034 ns/op
Iteration 4: 8516147.915 ns/op
Iteration 5: 8379908.710 ns/op
# Run progress: 65.00% complete, ETA 00:11:50
# Fork: 4 of 5
# Warmup Iteration 1: 8810415.141 ns/op
# Warmup Iteration 2: 8794569.859 ns/op
# Warmup Iteration 3: 8730751.745 ns/op
# Warmup Iteration 4: 8563348.202 ns/op
# Warmup Iteration 5: 8946487.757 ns/op
Iteration 1: 8798953.725 ns/op
Iteration 2: 9077297.461 ns/op
Iteration 3: 9203544.250 ns/op
Iteration 4: 10801144.492 ns/op
Iteration 5: 10137045.694 ns/op
# Run progress: 70.00% complete, ETA 00:10:09
# Fork: 5 of 5
# Warmup Iteration 1: 10034710.933 ns/op
# Warmup Iteration 2: 7852066.954 ns/op
# Warmup Iteration 3: 8036246.265 ns/op
# Warmup Iteration 4: 8208804.184 ns/op
# Warmup Iteration 5: 8919215.241 ns/op
Iteration 1: 7703625.019 ns/op
Iteration 2: 8173784.069 ns/op
Iteration 3: 8476930.000 ns/op
Iteration 4: 9254641.073 ns/op
Iteration 5: 8732920.419 ns/op
Result
"org.apache.commons.io.performance.IOUtilsContentEqualsPerformanceTest.testContentEqualsOld":
8897509.408 ?99.9%) 558227.023 ns/op [Average]
(min, avg, max) = (7703625.019, 8897509.408, 10801144.492), stdev =
745217.105
CI (99.9%): [8339282.385, 9455736.431] (assumes normal distribution)
# JMH version: 1.21
# VM version: JDK 13.0.2, OpenJDK 64-Bit Server VM, 13.0.2+8
# VM invoker: C:\jdk-13.0.2+8\bin\java.exe
# VM options: <none>
# Warmup: 5 iterations, 10 s each
# Measurement: 5 iterations, 10 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Average time, time/op
# Benchmark:
org.apache.commons.io.performance.IOUtilsContentEqualsPerformanceTest.testContentEqualsOld2
# Run progress: 75.00% complete, ETA 00:08:27
# Fork: 1 of 5
# Warmup Iteration 1: 2274597420.000 ns/op
# Warmup Iteration 2: 2161414140.000 ns/op
# Warmup Iteration 3: 2060648900.000 ns/op
# Warmup Iteration 4: 2034553880.000 ns/op
# Warmup Iteration 5: 2036716060.000 ns/op
Iteration 1: 2039811500.000 ns/op
Iteration 2: 2029332780.000 ns/op
Iteration 3: 2048828760.000 ns/op
Iteration 4: 2167898680.000 ns/op
Iteration 5: 2375598240.000 ns/op
# Run progress: 80.00% complete, ETA 00:06:47
# Fork: 2 of 5
# Warmup Iteration 1: 2302730460.000 ns/op
# Warmup Iteration 2: 2169550200.000 ns/op
# Warmup Iteration 3: 2183069220.000 ns/op
# Warmup Iteration 4: 2219912760.000 ns/op
# Warmup Iteration 5: 2276130160.000 ns/op
Iteration 1: 2256782140.000 ns/op
Iteration 2: 2212519940.000 ns/op
Iteration 3: 2194957540.000 ns/op
Iteration 4: 2139474860.000 ns/op
Iteration 5: 2239168680.000 ns/op
# Run progress: 85.00% complete, ETA 00:05:07
# Fork: 3 of 5
# Warmup Iteration 1: 2871005625.000 ns/op
# Warmup Iteration 2: 2234621780.000 ns/op
# Warmup Iteration 3: 2057113240.000 ns/op
# Warmup Iteration 4: 2106691240.000 ns/op
# Warmup Iteration 5: 2239427440.000 ns/op
Iteration 1: 2221194720.000 ns/op
Iteration 2: 2252754040.000 ns/op
Iteration 3: 2362948520.000 ns/op
Iteration 4: 2233297260.000 ns/op
Iteration 5: 2289872180.000 ns/op
# Run progress: 90.00% complete, ETA 00:03:25
# Fork: 4 of 5
# Warmup Iteration 1: 2316297000.000 ns/op
# Warmup Iteration 2: 2186447840.000 ns/op
# Warmup Iteration 3: 2186496100.000 ns/op
# Warmup Iteration 4: 2210486500.000 ns/op
# Warmup Iteration 5: 2248586640.000 ns/op
Iteration 1: 2228412480.000 ns/op
Iteration 2: 2293236620.000 ns/op
Iteration 3: 2300933160.000 ns/op
Iteration 4: 2050526440.000 ns/op
Iteration 5: 2103876620.000 ns/op
# Run progress: 95.00% complete, ETA 00:01:43
# Fork: 5 of 5
# Warmup Iteration 1: 2231988940.000 ns/op
# Warmup Iteration 2: 2132075180.000 ns/op
# Warmup Iteration 3: 2107424340.000 ns/op
# Warmup Iteration 4: 2244625860.000 ns/op
# Warmup Iteration 5: 2212587240.000 ns/op
Iteration 1: 2358689240.000 ns/op
Iteration 2: 2360920240.000 ns/op
Iteration 3: 2304193360.000 ns/op
Iteration 4: 2120541520.000 ns/op
Iteration 5: 2225049120.000 ns/op
Result
"org.apache.commons.io.performance.IOUtilsContentEqualsPerformanceTest.testContentEqualsOld2":
2216432745.600 ?99.9%) 79521556.878 ns/op [Average]
(min, avg, max) = (2029332780.000, 2216432745.600, 2375598240.000), stdev
= 106159003.301
CI (99.9%): [2136911188.722, 2295954302.478] (assumes normal distribution)
# Run complete. Total time: 00:34:37
REMEMBER: The numbers below are just data. To gain reusable insights, you
need to follow up on
why the numbers are the way they are. Use profilers (see -prof, -lprof),
design factorial
experiments, perform baseline and negative tests that provide experimental
control, make sure
the benchmarking environment is safe on JVM/OS/HW level, ask for reviews
from the domain experts.
Do not assume the numbers tell you what you want them to tell.
Benchmark Mode Cnt
Score Error Units
IOUtilsContentEqualsPerformanceTest.testContentEqualsForFileNew avgt 25
7934046.780 ? 644395.868 ns/op
IOUtilsContentEqualsPerformanceTest.testContentEqualsNew2 avgt 25
344567594.458 ?21104733.591 ns/op
IOUtilsContentEqualsPerformanceTest.testContentEqualsOld avgt 25
8897509.408 ? 558227.023 ns/op
IOUtilsContentEqualsPerformanceTest.testContentEqualsOld2 avgt 25
2216432745.600 ?79521556.878 ns/op
Benchmark result is saved to target/jmh-result.org.apache.json
[INFO]
[INFO] --- maven-jar-plugin:3.2.0:jar (default-jar) @ commons-io ---
[INFO] Building jar:
D:\workspace\commons-io\target\commons-io-2.7.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-site-plugin:3.8.2:attach-descriptor (attach-descriptor) @
commons-io ---
[INFO] Skipping because packaging 'jar' is not pom.
[INFO]
[INFO] --- maven-jar-plugin:3.2.0:test-jar (default) @ commons-io ---
[INFO] Building jar:
D:\workspace\commons-io\target\commons-io-2.7.1-SNAPSHOT-tests.jar
[INFO]
[INFO] --- maven-source-plugin:3.2.0:jar-no-fork (create-source-jar) @
commons-io ---
[INFO] Building jar:
D:\workspace\commons-io\target\commons-io-2.7.1-SNAPSHOT-sources.jar
[INFO]
[INFO] --- maven-source-plugin:3.2.0:test-jar-no-fork (create-source-jar) @
commons-io ---
[INFO] Building jar:
D:\workspace\commons-io\target\commons-io-2.7.1-SNAPSHOT-test-sources.jar
[INFO]
[INFO] --- jacoco-maven-plugin:0.8.5:check (check) @ commons-io ---
[INFO] Skipping JaCoCo execution due to missing execution data
file:D:\workspace\commons-io\target\jacoco.exec
[INFO]
[INFO] --- apache-rat-plugin:0.13:check (default-cli) @ commons-io ---
[INFO] Enabled default license matchers.
[INFO] Will parse SCM ignores for exclusions...
[INFO] Parsing exclusions from D:\workspace\commons-io\.gitignore
[INFO] Finished adding exclusions from SCM ignore files.
[INFO] 73 implicit excludes (use -debug for more details).
[INFO] 12 explicit excludes (use -debug for more details).
[INFO] 373 resources included (use -debug for more details)
[INFO] Rat check: Summary over all files. Unapproved: 0, unknown: 0,
generated: 0, approved: 364 licenses.
[INFO]
[INFO] >>> clirr-maven-plugin:2.8:check (default-cli) > compile @ commons-io
>>>
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M2:enforce (enforce-maven-version) @
commons-io ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M2:enforce (enforce-maven-3) @
commons-io ---
[INFO]
[INFO] --- apache-rat-plugin:0.13:check (rat-check) @ commons-io ---
[INFO] Enabled default license matchers.
[INFO] Will parse SCM ignores for exclusions...
[INFO] Parsing exclusions from D:\workspace\commons-io\.gitignore
[INFO] Finished adding exclusions from SCM ignore files.
[INFO] 73 implicit excludes (use -debug for more details).
[INFO] 12 explicit excludes (use -debug for more details).
[INFO] 373 resources included (use -debug for more details)
[INFO] Rat check: Summary over all files. Unapproved: 0, unknown: 0,
generated: 0, approved: 364 licenses.
[INFO]
[INFO] --- build-helper-maven-plugin:3.0.0:parse-version (parse-version) @
commons-io ---
[INFO]
[INFO] --- maven-antrun-plugin:1.8:run (javadoc.resources) @ commons-io ---
[INFO] Executing tasks
main:
[INFO] Executed tasks
[INFO]
[INFO] --- maven-remote-resources-plugin:1.5:process
(process-resource-bundles) @ commons-io ---
[INFO]
[INFO] --- buildnumber-maven-plugin:1.4:create (default) @ commons-io ---
[INFO] Executing: cmd.exe /X /C "git rev-parse --verify HEAD"
[INFO] Working directory: D:\workspace\commons-io
[INFO] Storing buildNumber: 73dc0ff3e6d79ab88f1ed0d253d52cb6da0dffa5 at
timestamp: 1591036535724
[INFO] Storing buildScmBranch: refine_contentEquals
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @
commons-io ---
[INFO] Using 'iso-8859-1' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory
D:\workspace\commons-io\src\main\resources
[INFO] Copying 2 resources to META-INF
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @
commons-io ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 158 source files to D:\workspace\commons-io\target\classes
[INFO]
/D:/workspace/commons-io/src/main/java/org/apache/commons/io/input/ClassLoaderObjectInputStream.java:
Some input files use or override a deprecated API.
[INFO]
/D:/workspace/commons-io/src/main/java/org/apache/commons/io/input/ClassLoaderObjectInputStream.java:
Recompile with -Xlint:deprecation for details.
[INFO]
/D:/workspace/commons-io/src/main/java/org/apache/commons/io/IOExceptionList.java:
D:\workspace\commons-io\src\main\java\org\apache\commons\io\IOException
List.java uses unchecked or unsafe operations.
[INFO]
/D:/workspace/commons-io/src/main/java/org/apache/commons/io/IOExceptionList.java:
Recompile with -Xlint:unchecked for details.
[INFO]
[INFO] <<< clirr-maven-plugin:2.8:check (default-cli) < compile @ commons-io
<<<
[INFO]
[INFO]
[INFO] --- clirr-maven-plugin:2.8:check (default-cli) @ commons-io ---
[INFO] Comparing to version: 2.7
[INFO] Succeeded with 0 errors; 0 warnings; and 0 other changes.
[INFO]
[INFO] --- maven-checkstyle-plugin:3.1.0:check (default-cli) @ commons-io ---
[INFO]
[INFO] >>> maven-javadoc-plugin:3.1.1:javadoc (default-cli) >
generate-sources @ commons-io >>>
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M2:enforce (enforce-maven-version) @
commons-io ---
[INFO]
[INFO] --- maven-enforcer-plugin:3.0.0-M2:enforce (enforce-maven-3) @
commons-io ---
[INFO]
[INFO] --- apache-rat-plugin:0.13:check (rat-check) @ commons-io ---
[INFO] Enabled default license matchers.
[INFO] Will parse SCM ignores for exclusions...
[INFO] Parsing exclusions from D:\workspace\commons-io\.gitignore
[INFO] Finished adding exclusions from SCM ignore files.
[INFO] 73 implicit excludes (use -debug for more details).
[INFO] 12 explicit excludes (use -debug for more details).
[INFO] 373 resources included (use -debug for more details)
[INFO] Rat check: Summary over all files. Unapproved: 0, unknown: 0,
generated: 0, approved: 364 licenses.
[INFO]
[INFO] --- build-helper-maven-plugin:3.0.0:parse-version (parse-version) @
commons-io ---
[INFO]
[INFO] --- maven-antrun-plugin:1.8:run (javadoc.resources) @ commons-io ---
[INFO] Executing tasks
main:
[INFO] Executed tasks
[INFO]
[INFO] <<< maven-javadoc-plugin:3.1.1:javadoc (default-cli) <
generate-sources @ commons-io <<<
[INFO]
[INFO]
[INFO] --- maven-javadoc-plugin:3.1.1:javadoc (default-cli) @ commons-io ---
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 35:31 min
[INFO] Finished at: 2020-06-02T02:35:59+08:00
[INFO]
------------------------------------------------------------------------
```
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