--- old/test/hotspot/jtreg/gc/shenandoah/options/TestExplicitGCNoConcurrent.java	2020-06-17 13:38:24.907976935 +0200
+++ new/test/hotspot/jtreg/gc/shenandoah/options/TestExplicitGCNoConcurrent.java	2020-06-17 13:38:24.631969458 +0200
@@ -61,6 +61,7 @@
 
         for (String opt : opts) {
             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+                    "-Xmx128m",
                     "-XX:+UnlockExperimentalVMOptions",
                     "-XX:+UseShenandoahGC",
                     "-Xlog:gc",