--- old/test/hotspot/jtreg/gc/shenandoah/options/TestExplicitGC.java	2020-06-17 13:38:24.251959159 +0200
+++ new/test/hotspot/jtreg/gc/shenandoah/options/TestExplicitGC.java	2020-06-17 13:38:23.975951678 +0200
@@ -61,6 +61,7 @@
 
         {
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
                     "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-Xlog:gc",
@@ -77,6 +78,7 @@
 
         {
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
                     "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-Xlog:gc",
@@ -94,6 +96,7 @@
 
         {
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
                     "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-Xlog:gc",
@@ -111,6 +114,7 @@
 
         {
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
                     "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-Xlog:gc",
@@ -128,6 +132,7 @@
 
         {
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
                     "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-Xlog:gc",