8324781: runtime/Thread/TestAlwaysPreTouchStacks.java failed with Expected a higher ratio between stack committed and reserved

8325218: gc/parallel/TestAlwaysPreTouchBehavior.java fails

Reviewed-by: stefank, jsjolen, stuefe

Author: limingliu-ampere

test/hotspot/jtreg/ProblemList.txt

@@ -77,7 +77,6 @@ gc/epsilon/TestMemoryMXBeans.java 8206434 generic-all
 gc/g1/humongousObjects/objectGraphTest/TestObjectGraphAfterGC.java 8156755 generic-all
 gc/g1/logging/TestG1LoggingFailure.java 8169634 generic-all
 gc/g1/humongousObjects/TestHeapCounters.java 8178918 generic-all
-gc/parallel/TestAlwaysPreTouchBehavior.java 8325218 linux-all
 gc/TestAllocHumongousFragment.java#adaptive 8298781 generic-all
 gc/TestAllocHumongousFragment.java#aggressive 8298781 generic-all
 gc/TestAllocHumongousFragment.java#iu-aggressive 8298781 generic-all
@@ -102,7 +101,6 @@ runtime/StackGuardPages/TestStackGuardPagesNative.java 8303612 linux-all
 runtime/ErrorHandling/TestDwarf.java#checkDecoder 8305489 linux-all
 runtime/ErrorHandling/MachCodeFramesInErrorFile.java 8313315 linux-ppc64le
 runtime/cds/appcds/customLoader/HelloCustom_JFR.java 8241075 linux-all,windows-x64
-runtime/Thread/TestAlwaysPreTouchStacks.java 8324781 linux-all
 
 applications/jcstress/copy.java 8229852 linux-all
 

test/hotspot/jtreg/gc/parallel/TestAlwaysPreTouchBehavior.java

@@ -31,7 +31,7 @@
  * @requires os.family == "linux"
  * @requires os.maxMemory > 2G
  * @library /test/lib
- * @run main/othervm -Xmx1g -Xms1g -XX:+UseParallelGC -XX:+AlwaysPreTouch gc.parallel.TestAlwaysPreTouchBehavior
+ * @run main/othervm -Xmx1g -Xms1g -XX:+UseParallelGC -XX:+AlwaysPreTouch -XX:+UnlockDiagnosticVMOptions -XX:-UseMadvPopulateWrite gc.parallel.TestAlwaysPreTouchBehavior
  */
 import java.lang.management.ManagementFactory;
 import java.lang.management.ThreadInfo;
@@ -77,4 +77,3 @@ public static void main(String [] args) {
     Asserts.assertGreaterThanOrEqual(rss, committedMemory, "RSS of this process(" + rss + "kb) should be bigger than or equal to committed heap mem(" + committedMemory + "kb)");
    }
 }
-

test/hotspot/jtreg/runtime/Thread/TestAlwaysPreTouchStacks.java

@@ -27,6 +27,7 @@
 
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.concurrent.CyclicBarrier;
@@ -89,14 +90,17 @@ public static void main(String[] args) throws Exception {
             // should show up with fully - or almost fully - committed thread stacks.
 
         } else {
-
-            ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
+            ArrayList<String> vmArgs = new ArrayList<>();
+            Collections.addAll(vmArgs,
                     "-XX:+UnlockDiagnosticVMOptions",
                     "-Xmx100M",
                     "-XX:+AlwaysPreTouchStacks",
-                    "-XX:NativeMemoryTracking=summary", "-XX:+PrintNMTStatistics",
-                    "TestAlwaysPreTouchStacks",
-                    "test");
+                    "-XX:NativeMemoryTracking=summary", "-XX:+PrintNMTStatistics");
+            if (System.getProperty("os.name").contains("Linux")) {
+                vmArgs.add("-XX:-UseMadvPopulateWrite");
+            }
+            Collections.addAll(vmArgs, "TestAlwaysPreTouchStacks", "test");
+            ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(vmArgs);
             OutputAnalyzer output = new OutputAnalyzer(pb.start());
             output.reportDiagnosticSummary();