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8254782: Fix benchmark issues in java/lang/StringIndexOfChar.java benchmark

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Reviewed-by: redestad, shade
This commit is contained in:
jasontatton-aws 2020-10-29 12:06:43 +00:00 committed by Aleksey Shipilev
parent ea26ff1142
commit 72ff8e2118
1 changed files with 67 additions and 70 deletions
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137
test/micro/org/openjdk/bench/java/lang/StringIndexOfChar.java
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@ -25,10 +25,13 @@ package org.openjdk.bench.java.lang;
import java.util.Random;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.infra.Blackhole;
import java.util.concurrent.TimeUnit;
@ -41,18 +44,37 @@ import java.util.concurrent.TimeUnit;
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Thread)
public class StringIndexOfChar {
private static final int loops = 100000;
private static final Random rng = new Random(1999);
private static final int pathCnt = 1000;
private static final String [] latn1_short = new String[pathCnt];
private static final String [] latn1_sse4 = new String[pathCnt];
private static final String [] latn1_avx2 = new String[pathCnt];
private static final String [] latn1_mixedLength = new String[pathCnt];
private static final String [] utf16_short = new String[pathCnt];
private static final String [] utf16_sse4 = new String[pathCnt];
private static final String [] utf16_avx2 = new String[pathCnt];
private static final String [] utf16_mixedLength = new String[pathCnt];
static {
@Param("100000")
private int loops;
@Param("1000")
private int pathCnt;
@Param("1999")
private int rngSeed;
private Random rng;
private String[] latn1_short;
private String[] latn1_sse4;
private String[] latn1_avx2;
private String[] latn1_mixedLength;
private String[] utf16_short;
private String[] utf16_sse4;
private String[] utf16_avx2;
private String[] utf16_mixedLength;
@Setup
public void setup() {
rng = new Random(rngSeed);
latn1_short = new String[pathCnt];
latn1_sse4 = new String[pathCnt];
latn1_avx2 = new String[pathCnt];
latn1_mixedLength = new String[pathCnt];
utf16_short = new String[pathCnt];
utf16_sse4 = new String[pathCnt];
utf16_avx2 = new String[pathCnt];
utf16_mixedLength = new String[pathCnt];
for (int i = 0; i < pathCnt; i++) {
latn1_short[i] = makeRndString(false, 15);
latn1_sse4[i] = makeRndString(false, 16);
@ -65,7 +87,7 @@ public class StringIndexOfChar {
}
}
private static String makeRndString(boolean isUtf16, int length) {
private String makeRndString(boolean isUtf16, int length) {
StringBuilder sb = new StringBuilder(length);
if(length > 0){
sb.append(isUtf16?'\u2026':'b'); // ...
@ -81,141 +103,116 @@ public class StringIndexOfChar {
@Benchmark
public void latin1_mixed_char() {
int ret = 0;
public void latin1_mixed_char(Blackhole bh) {
for (String what : latn1_mixedLength) {
ret += what.indexOf('a');
bh.consume(what.indexOf('a'));
}
}
@Benchmark
public void utf16_mixed_char() {
int ret = 0;
public void utf16_mixed_char(Blackhole bh) {
for (String what : utf16_mixedLength) {
ret += what.indexOf('a');
bh.consume(what.indexOf('a'));
}
}
@Benchmark
public void latin1_mixed_String() {
int ret = 0;
public void latin1_mixed_String(Blackhole bh) {
for (String what : latn1_mixedLength) {
ret += what.indexOf("a");
bh.consume(what.indexOf("a"));
}
}
@Benchmark
public void utf16_mixed_String() {
int ret = 0;
public void utf16_mixed_String(Blackhole bh) {
for (String what : utf16_mixedLength) {
ret += what.indexOf("a");
bh.consume(what.indexOf("a"));
}
}
////////// more detailed code path dependent tests //////////
@Benchmark
public void latin1_Short_char() {
int ret = 0;
public void latin1_Short_char(Blackhole bh) {
for (String what : latn1_short) {
ret += what.indexOf('a');
bh.consume(what.indexOf('a'));
}
}
@Benchmark
public void latin1_SSE4_char() {
int ret = 0;
public void latin1_SSE4_char(Blackhole bh) {
for (String what : latn1_sse4) {
ret += what.indexOf('a');
bh.consume(what.indexOf('a'));
}
}
@Benchmark
public void latin1_AVX2_char() {
int ret = 0;
public void latin1_AVX2_char(Blackhole bh) {
for (String what : latn1_avx2) {
ret += what.indexOf('a');
bh.consume(what.indexOf('a'));
}
}
@Benchmark
public int utf16_Short_char() {
int ret = 0;
public void utf16_Short_char(Blackhole bh) {
for (String what : utf16_short) {
ret += what.indexOf('a');
bh.consume(what.indexOf('a'));
}
return ret;
}
@Benchmark
public int utf16_SSE4_char() {
int ret = 0;
public void utf16_SSE4_char(Blackhole bh) {
for (String what : utf16_sse4) {
ret += what.indexOf('a');
bh.consume(what.indexOf('a'));
}
return ret;
}
@Benchmark
public int utf16_AVX2_char() {
int ret = 0;
public void utf16_AVX2_char(Blackhole bh) {
for (String what : utf16_avx2) {
ret += what.indexOf('a');
bh.consume(what.indexOf('a'));
}
return ret;
}
@Benchmark
public int latin1_Short_String() {
int ret = 0;
public void latin1_Short_String(Blackhole bh) {
for (String what : latn1_short) {
ret += what.indexOf("a");
bh.consume(what.indexOf("a"));
}
return ret;
}
@Benchmark
public int latin1_SSE4_String() {
int ret = 0;
public void latin1_SSE4_String(Blackhole bh) {
for (String what : latn1_sse4) {
ret += what.indexOf("a");
bh.consume(what.indexOf("a"));
}
return ret;
}
@Benchmark
public int latin1_AVX2_String() {
int ret = 0;
public void latin1_AVX2_String(Blackhole bh) {
for (String what : latn1_avx2) {
ret += what.indexOf("a");
bh.consume(what.indexOf("a"));
}
return ret;
}
@Benchmark
public int utf16_Short_String() {
int ret = 0;
public void utf16_Short_String(Blackhole bh) {
for (String what : utf16_short) {
ret += what.indexOf("a");
bh.consume(what.indexOf("a"));
}
return ret;
}
@Benchmark
public int utf16_SSE4_String() {
int ret = 0;
public void utf16_SSE4_String(Blackhole bh) {
for (String what : utf16_sse4) {
ret += what.indexOf("a");
bh.consume(what.indexOf("a"));
}
return ret;
}
@Benchmark
public int utf16_AVX2_String() {
int ret = 0;
public void utf16_AVX2_String(Blackhole bh) {
for (String what : utf16_avx2) {
ret += what.indexOf("a");
bh.consume(what.indexOf("a"));
}
return ret;
}
}