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8223447: Stabilize gc/shenandoah/TestStringDedupStress test

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Reviewed-by: rkennke
This commit is contained in:
Aleksey Shipilev 2019-05-07 21:53:46 +02:00
parent c222e1aad0
commit 0284208ab3
1 changed files with 47 additions and 26 deletions
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73
test/hotspot/jtreg/gc/shenandoah/TestStringDedupStress.java
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@ -30,60 +30,74 @@
* @modules java.base/jdk.internal.misc:open * @modules java.base/jdk.internal.misc:open
* @modules java.base/java.lang:open * @modules java.base/java.lang:open
* java.management * java.management
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -DtargetStrings=3000000 * -DtargetStrings=3000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=aggressive -DtargetStrings=2000000 * -XX:ShenandoahGCHeuristics=aggressive -DtargetStrings=2000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=aggressive -XX:+ShenandoahOOMDuringEvacALot -DtargetStrings=2000000 * -XX:ShenandoahGCHeuristics=aggressive -XX:+ShenandoahOOMDuringEvacALot -DtargetStrings=2000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=static -DtargetStrings=4000000 * -XX:ShenandoahGCHeuristics=static -DtargetStrings=4000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=compact * -XX:ShenandoahGCHeuristics=compact
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=passive -XX:+ShenandoahDegeneratedGC -DtargetOverwrites=40000000 * -XX:ShenandoahGCHeuristics=passive -XX:+ShenandoahDegeneratedGC
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=passive -XX:-ShenandoahDegeneratedGC -DtargetOverwrites=40000000 * -XX:ShenandoahGCHeuristics=passive -XX:-ShenandoahDegeneratedGC
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=traversal * -XX:ShenandoahGCHeuristics=traversal
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahUpdateRefsEarly=off -DtargetStrings=3000000 * -XX:ShenandoahUpdateRefsEarly=off -DtargetStrings=3000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=compact -XX:ShenandoahUpdateRefsEarly=off -DtargetStrings=2000000 * -XX:ShenandoahGCHeuristics=compact -XX:ShenandoahUpdateRefsEarly=off -DtargetStrings=2000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=aggressive -XX:ShenandoahUpdateRefsEarly=off -DtargetStrings=2000000 * -XX:ShenandoahGCHeuristics=aggressive -XX:ShenandoahUpdateRefsEarly=off -DtargetStrings=2000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=static -XX:ShenandoahUpdateRefsEarly=off -DtargetOverwrites=4000000 * -XX:ShenandoahGCHeuristics=static -XX:ShenandoahUpdateRefsEarly=off
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=aggressive -XX:ShenandoahUpdateRefsEarly=off -XX:+ShenandoahOOMDuringEvacALot -DtargetStrings=2000000 * -XX:ShenandoahGCHeuristics=aggressive -XX:ShenandoahUpdateRefsEarly=off -XX:+ShenandoahOOMDuringEvacALot -DtargetStrings=2000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
* *
* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx512M -Xlog:gc+stats * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+UseStringDeduplication -Xmx1g -Xlog:gc+stats
* -XX:ShenandoahGCHeuristics=traversal -XX:+ShenandoahOOMDuringEvacALot -DtargetStrings=2000000 * -XX:ShenandoahGCHeuristics=traversal -XX:+ShenandoahOOMDuringEvacALot -DtargetStrings=2000000
* -Xlog:gc
* TestStringDedupStress * TestStringDedupStress
*/ */
@ -97,9 +111,9 @@ public class TestStringDedupStress {
private static Field valueField; private static Field valueField;
private static Unsafe unsafe; private static Unsafe unsafe;
private static long TARGET_STRINGS = Long.getLong("targetStrings", 2_500_000); private static final int TARGET_STRINGS = Integer.getInteger("targetStrings", 2_500_000);
private static long TARGET_OVERWRITES = Long.getLong("targetOverwrites", 600_000);
private static final long MAX_REWRITE_GC_CYCLES = 6; private static final long MAX_REWRITE_GC_CYCLES = 6;
private static final long MAX_REWRITE_TIME = 30*1000; // ms
private static final int UNIQUE_STRINGS = 20; private static final int UNIQUE_STRINGS = 20;
@ -151,8 +165,8 @@ public class TestStringDedupStress {
} }
} }
private static int verifyDedepString(ArrayList<StringAndId> strs) { private static int verifyDedupString(ArrayList<StringAndId> strs) {
HashMap<Object, StringAndId> seen = new HashMap<>(); Map<Object, StringAndId> seen = new HashMap<>(TARGET_STRINGS*2);
int total = 0; int total = 0;
int dedup = 0; int dedup = 0;
@ -195,14 +209,16 @@ public class TestStringDedupStress {
} }
// Generate roughly TARGET_STRINGS strings, only UNIQUE_STRINGS are unique // Generate roughly TARGET_STRINGS strings, only UNIQUE_STRINGS are unique
long genIters = TARGET_STRINGS / UNIQUE_STRINGS; int genIters = TARGET_STRINGS / UNIQUE_STRINGS;
for (long index = 0; index < genIters; index++) { for (int index = 0; index < genIters; index++) {
generateStrings(astrs, UNIQUE_STRINGS); generateStrings(astrs, UNIQUE_STRINGS);
} }
long cycleBeforeRewrite = gcCycleMBean.getCollectionCount(); long cycleBeforeRewrite = gcCycleMBean.getCollectionCount();
long timeBeforeRewrite = System.currentTimeMillis();
for (long loop = 1; loop < TARGET_OVERWRITES; loop++) { long loop = 1;
while (true) {
int arrSize = astrs.size(); int arrSize = astrs.size();
int index = rn.nextInt(arrSize); int index = rn.nextInt(arrSize);
StringAndId item = astrs.get(index); StringAndId item = astrs.get(index);
@ -210,13 +226,18 @@ public class TestStringDedupStress {
item.str = "Unique String " + n; item.str = "Unique String " + n;
item.id = n; item.id = n;
if (loop % 1000 == 0) { if (loop++ % 1000 == 0) {
// enough GC cycles for rewritten strings to be deduplicated // enough GC cycles for rewritten strings to be deduplicated
if (gcCycleMBean.getCollectionCount() - cycleBeforeRewrite >= MAX_REWRITE_GC_CYCLES) { if (gcCycleMBean.getCollectionCount() - cycleBeforeRewrite >= MAX_REWRITE_GC_CYCLES) {
break; break;
} }
// enough time is spent waiting for GC to happen
if (System.currentTimeMillis() - timeBeforeRewrite >= MAX_REWRITE_TIME) {
break;
}
} }
} }
verifyDedepString(astrs); verifyDedupString(astrs);
} }
} }