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perf: reduce java-tracer E2E from ~75 min to ~15 min

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Remove filterEvens and instanceMethod from the Workload fixture (4→2
functions) and reduce main() loop from 1000→100 rounds. The E2E test
only needs to verify the tracer→optimizer pipeline works end-to-end;
it doesn't need 4 functions or 1604 replay tests to prove that.

Expected impact: ~2 functions × ~8 candidates × fewer replay tests
should bring the job from ~75 min down to ~10-15 min.
This commit is contained in:
Kevin Turcios 2026-04-10 03:04:29 -05:00
parent 5ee642e35e
commit 2b0f633c0f
1 changed files with 2 additions and 32 deletions
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34
tests/test_languages/fixtures/java_tracer_e2e/src/main/java/com/example/Workload.java
View file

@ -1,8 +1,5 @@
package com.example;
import java.util.ArrayList;
import java.util.List;
public class Workload {
public static int computeSum(int n) {
@ -21,46 +18,19 @@ public class Workload {
return result;
}
public static List<Integer> filterEvens(List<Integer> numbers) {
List<Integer> result = new ArrayList<>();
for (int n : numbers) {
if (n % 2 == 0) {
result.add(n);
}
}
return result;
}
public int instanceMethod(int x, int y) {
return x * y + computeSum(x);
}
public static void main(String[] args) {
// Run methods with large inputs so JFR can capture CPU samples.
// Small inputs finish too fast (<1ms) for JFR's 10ms sampling interval.
for (int round = 0; round < 1000; round++) {
// 100 rounds is enough for JFR to collect ~10 samples per function.
for (int round = 0; round < 100; round++) {
computeSum(100_000);
repeatString("hello world ", 1000);
List<Integer> nums = new ArrayList<>();
for (int i = 1; i <= 10_000; i++) nums.add(i);
filterEvens(nums);
Workload w = new Workload();
w.instanceMethod(100_000, 42);
}
// Also call with small inputs for variety in traced args
System.out.println("computeSum(100) = " + computeSum(100));
System.out.println("repeatString(\"ab\", 3) = " + repeatString("ab", 3));
List<Integer> small = new ArrayList<>();
for (int i = 1; i <= 10; i++) small.add(i);
System.out.println("filterEvens(1..10) = " + filterEvens(small));
Workload w = new Workload();
System.out.println("instanceMethod(5, 3) = " + w.instanceMethod(5, 3));
System.out.println("Workload complete.");
}
}