https://bugs.gentoo.org/863977
https://bugs.gentoo.org/924135
https://bugs.gentoo.org/939725 for 120000

--- a/src/test/java/org/jctools/util/TestUtil.java
+++ b/src/test/java/org/jctools/util/TestUtil.java
@@ -19,7 +19,7 @@ import static org.jctools.util.UnpaddedQueueFactory.newUnpaddedQueue;
 public class TestUtil {
     public static final int CONCURRENT_TEST_DURATION = Integer.getInteger("org.jctools.concTestDurationMs", 500);
     public static final int CONCURRENT_TEST_THREADS = Integer.getInteger("org.jctools.concTestThreads", Math.min(4, Runtime.getRuntime().availableProcessors()));
-    public static final int TEST_TIMEOUT = 30000;
+    public static final int TEST_TIMEOUT = 120000;
     private static final AtomicInteger threadIndex = new AtomicInteger();
     public static void sleepQuietly(long timeMs) {
         LockSupport.parkNanos(TimeUnit.MILLISECONDS.toNanos(timeMs));