sander/arraybench
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

v2 blackholes, java8

Browse source
This commit is contained in:
Shautvast 2023-08-28 23:01:46 +02:00
parent 720f0f07a8
commit 17fb67b7ad
4 changed files with 88 additions and 36 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
log
View file

@ -569,11 +569,11 @@ c2, level 4, com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_e
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::enhancedForLoop@38 (line 53) ; - com.github.shautvast.benchmarks.loops.LoopBenchmark::enhancedForLoop@38 (line 53)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_enhancedForLoop_jmhTest::enhancedForLoop_avgt_jmhStub@19 (line 193) ; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_enhancedForLoop_jmhTest::enhancedForLoop_avgt_jmhStub@19 (line 193)
1,81% 0x0000000113e5a784: 210c 40b9 1,81% 0x0000000113e5a784: 210c 40b9
17,19% 0x0000000113e5a788: ;*getfield coder {reexecute=0 rethrow=0 return_oop=0} 17,19% 0x0000000113e5a788: ;*getfield coder {reexecute=0 rethrow=0 return_oop=0}
; - java.lang.String::coder@7 (line 4556) ; - java.lang.String::coder@7 (line 4556)
; - java.lang.String::length@6 (line 1499) ; - java.lang.String::length@6 (line 1499)
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::enhancedForLoop@38 (line 53) ; - com.github.shautvast.benchmarks.loops.LoopBenchmark::enhancedForLoop@38 (line 53)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_enhancedForLoop_jmhTest::enhancedForLoop_avgt_jmhStub@19 (line 193) ; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_enhancedForLoop_jmhTest::enhancedForLoop_avgt_jmhStub@19 (line 193)
17,19% 0x0000000113e5a788: 8642 c039 | 2128 c61a 17,19% 0x0000000113e5a788: 8642 c039 | 2128 c61a
0,01% 0x0000000113e5a790: ;*iadd {reexecute=0 rethrow=0 return_oop=0} 0,01% 0x0000000113e5a790: ;*iadd {reexecute=0 rethrow=0 return_oop=0}
; - java.util.ArrayList$Itr::next@53 (line 974) ; - java.util.ArrayList$Itr::next@53 (line 974)

10
pom.xml
View file

@ -9,8 +9,8 @@
<version>1.0-SNAPSHOT</version> <version>1.0-SNAPSHOT</version>
<properties> <properties>
<maven.compiler.source>20</maven.compiler.source> <maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>20</maven.compiler.target> <maven.compiler.target>8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties> </properties>
@ -41,9 +41,9 @@
<artifactId>maven-compiler-plugin</artifactId> <artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version> <version>3.8.0</version>
<configuration> <configuration>
<compilerVersion>9</compilerVersion> <compilerVersion>8</compilerVersion>
<source>9</source> <source>8</source>
<target>9</target> <target>8</target>
</configuration> </configuration>
</plugin> </plugin>
<plugin> <plugin>

45
report.md Normal file
View file

@ -0,0 +1,45 @@
**cStyle**
```
23,57% 0x0000000112765de8: ;*aaload {reexecute=0 rethrow=0 return_oop=0}
; - java.util.ArrayList::elementData@5 (line 411)
; - java.util.ArrayList::get@11 (line 428)
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::cStyle@20 (line 35)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_cStyle_jmhTest::cStyle_avgt_jmhStub@19 (line 193)
30,39% 0x0000000112765e00: ;*getfield coder {reexecute=0 rethrow=0 return_oop=0}
; - java.lang.String::coder@7 (line 4556)
; - java.lang.String::length@6 (line 1499)
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::cStyle@28 (line 35)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_cStyle_jmhTest::cStyle_avgt_jmhStub@19 (line 193)
27,83% 0x0000000112765e28: ;*getfield coder {reexecute=0 rethrow=0 return_oop=0}
; - java.lang.String::coder@7 (line 4556)
; - java.lang.String::length@6 (line 1499)
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::cStyle@28 (line 35)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_cStyle_jmhTest::cStyle_avgt_jmhStub@19 (line 193)
5,18% 0x0000000112765e3c: ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0}
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::cStyle@10 (line 34)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_cStyle_jmhTest::cStyle_avgt_jmhStub@19 (line 193)
```
**enhancedForLoop**
```
29,09% 0x0000000113e5a748: ;*aaload {reexecute=0 rethrow=0 return_oop=0}
; - java.util.ArrayList$Itr::next@64 (line 975)
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::enhancedForLoop@25 (line 52)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_enhancedForLoop_jmhTest::enhancedForLoop_avgt_jmhStub@19 (line 193)
23,18% 0x0000000113e5a760: ;*getfield coder {reexecute=0 rethrow=0 return_oop=0}
; - java.lang.String::coder@7 (line 4556)
; - java.lang.String::length@6 (line 1499)
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::enhancedForLoop@38 (line 53)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_enhancedForLoop_jmhTest::enhancedForLoop_avgt_jmhStub@19 (line 193)
17,19% 0x0000000113e5a788: ;*getfield coder {reexecute=0 rethrow=0 return_oop=0}
; - java.lang.String::coder@7 (line 4556)
; - java.lang.String::length@6 (line 1499)
; - com.github.shautvast.benchmarks.loops.LoopBenchmark::enhancedForLoop@38 (line 53)
; - com.github.shautvast.benchmarks.loops.jmh_generated.LoopBenchmark_enhancedForLoop_jmhTest::enhancedForLoop_avgt_jmhStub@19 (line 193)
```

59
src/main/java/com/github/shautvast/benchmarks/loops/LoopBenchmark.java
View file

@ -1,6 +1,7 @@
package com.github.shautvast.benchmarks.loops; package com.github.shautvast.benchmarks.loops;
import org.openjdk.jmh.annotations.*; import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
import org.openjdk.jmh.profile.*; import org.openjdk.jmh.profile.*;
import org.openjdk.jmh.runner.Runner; import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException; import org.openjdk.jmh.runner.RunnerException;
@ -13,51 +14,57 @@ import java.util.concurrent.TimeUnit;
@BenchmarkMode(Mode.AverageTime) @BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS) @OutputTimeUnit(TimeUnit.NANOSECONDS)
@Fork(value = 1) @Fork(value = 1)
@State(Scope.Thread)
public class LoopBenchmark { public class LoopBenchmark {
@org.openjdk.jmh.annotations.State(Scope.Thread) final static int LIST_SIZE = 1000;
public static class State { List<String> list = new ArrayList<>(LIST_SIZE);
final static int LIST_SIZE = 1000;
List<String> list = new ArrayList<>(LIST_SIZE);
@Setup(Level.Iteration) @Setup(Level.Iteration)
public void doSetup() { public void doSetup() {
for (int i = 0; i < LIST_SIZE; i++) { for (int i = 0; i < LIST_SIZE; i++) {
list.add(UUID.randomUUID().toString()); list.add(UUID.randomUUID().toString());
}
} }
} }
@Benchmark @Benchmark
public long cStyle(LoopBenchmark.State state) { public void forLoop(Blackhole bh) {
long totalLength = 0; for (int i = 0; i < LIST_SIZE; i++) {
for (int i = 0; i < State.LIST_SIZE; i++) { bh.consume(list.get(i));
totalLength += state.list.get(i).length();
} }
return totalLength;
} }
@Benchmark @Benchmark
public long iterator(LoopBenchmark.State state) { public void whileLoop(Blackhole bh) {
long totalLength = 0; int i = 0;
for (Iterator<String> iterator = state.list.iterator(); iterator.hasNext(); ) { while (i < LIST_SIZE) {
totalLength += iterator.next().length(); bh.consume(list.get(i));
i++;
} }
return totalLength;
} }
@Benchmark @Benchmark
public long enhancedForLoop(LoopBenchmark.State state) { public void iterator(Blackhole bh) {
long totalLength = 0; for (Iterator<String> iterator = list.iterator(); iterator.hasNext(); ) {
for (String element : state.list) { bh.consume(iterator.next());
totalLength += element.length();
} }
return totalLength;
} }
@Benchmark @Benchmark
public long stream(LoopBenchmark.State state) { public void enhancedForLoop(Blackhole bh) {
return state.list.stream().mapToLong(String::length).sum(); for (String element : list) {
bh.consume(element.length());
}
}
@Benchmark
public void stream(Blackhole bh) {
list.stream().forEach(bh::consume);
}
@Benchmark
public void forEach(Blackhole bh) {
list.forEach(bh::consume);
} }
public static void main(String[] args) throws RunnerException { public static void main(String[] args) throws RunnerException {