--- old/test/hotspot/jtreg/gc/shenandoah/options/TestThreadCountsOverride.java	2020-06-17 13:38:28.852083815 +0200
+++ new/test/hotspot/jtreg/gc/shenandoah/options/TestThreadCountsOverride.java	2020-06-17 13:38:28.576076336 +0200
@@ -39,6 +39,7 @@
     public static void main(String[] args) throws Exception {
         {
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                "-Xmx128m",
                 "-XX:+UnlockDiagnosticVMOptions",
                 "-XX:+UnlockExperimentalVMOptions",
                 "-XX:+UseShenandoahGC",
@@ -53,6 +54,7 @@
 
         {
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                "-Xmx128m",
                 "-XX:+UnlockDiagnosticVMOptions",
                 "-XX:+UnlockExperimentalVMOptions",
                 "-XX:+UseShenandoahGC",