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8385610: Shenandoah: TestSoftMaxHeapSizeAvailableCalc should have more tolerance for other GC triggers

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Reviewed-by: kdnilsen, xpeng, syan, ruili
This commit is contained in:
William Kemper 2026-05-30 02:08:31 +00:00
parent 6e07965d6d
commit d3073b53d3
1 changed files with 5 additions and 2 deletions
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7
test/hotspot/jtreg/gc/shenandoah/TestSoftMaxHeapSizeAvailableCalc.java
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@ -35,6 +35,7 @@
* -XX:ShenandoahGCMode=satb
* -XX:+ShenandoahDegeneratedGC
* -XX:ShenandoahGCHeuristics=adaptive
* -XX:ShenandoahLearningSteps=0
* TestSoftMaxHeapSizeAvailableCalc
*/
@ -60,6 +61,7 @@
* -XX:+UseShenandoahGC -Xlog:gc=info
* -XX:ShenandoahGCMode=generational
* -XX:ShenandoahGCHeuristics=adaptive
* -XX:ShenandoahLearningSteps=0
* TestSoftMaxHeapSizeAvailableCalc
*
*/
@ -87,12 +89,13 @@ public class TestSoftMaxHeapSizeAvailableCalc {
// Soft max: 512M, ShenandoahMinFreeThreshold: 10 (default), ShenandoahEvacReserve: 5 (default)
// Soft max for mutator: 512M * (100.0 - 5) / 100 = 486.4M
// Threshold to trigger gc: 486.4M - 512 * 10 / 100.0 = 435.2M, just above (300 + 100)M.
// Expect gc count to be less than 1 / sec.
// Expect gc count to be less than 1 / sec, but to allow for other trigger conditions (like allocation rate),
// we bump the max allowed gc count to 35.
public static class Allocate {
static final List<byte[]> longLived = new ArrayList<>();
public static void test() throws Exception {
final int expectedMaxGcCount = Integer.getInteger("expectedMaxGcCount", 30);
final int expectedMaxGcCount = Integer.getInteger("expectedMaxGcCount", 35);
List<java.lang.management.GarbageCollectorMXBean> collectors = ManagementFactory.getGarbageCollectorMXBeans();
java.lang.management.GarbageCollectorMXBean cycleCollector = null;
for (java.lang.management.GarbageCollectorMXBean bean : collectors) {