diff --git a/src/test/java/blackbox/slow/PoolIT.java b/src/test/java/blackbox/slow/PoolIT.java
index a625922a..144dec54 100644
--- a/src/test/java/blackbox/slow/PoolIT.java
+++ b/src/test/java/blackbox/slow/PoolIT.java
@@ -25,6 +25,7 @@
 import org.junit.jupiter.api.extension.RegisterExtension;
 import stormpot.Completion;
 import stormpot.GenericPoolable;
+import stormpot.ManagedPool;
 import stormpot.Pool;
 import stormpot.PoolBuilder;
 import stormpot.PoolException;
@@ -285,10 +286,12 @@ void mustGraduallyReduceAggressivenessInRepairingFailingAllocator() throws Excep
     }));
     builder.setAllocator(allocator);
     createPool();
+    ManagedPool managedPool = pool.getManagedPool();
     GenericPoolable obj = pool.claim(longTimeout);
     obj.expire();
     obj.release();
     assertThrows(PoolException.class, () -> pool.claim(longTimeout).release());
+    StringBuilder sb = new StringBuilder(1024);
     long prev = 0, curr;
     for (int i = 0; i < 50; i++) {
       long start = System.nanoTime();
@@ -297,14 +300,22 @@ void mustGraduallyReduceAggressivenessInRepairingFailingAllocator() throws Excep
       if (elapsedMillis >= 150) {
         // Ignore outliers with very high sleep time.
         i--;
+        prev = counter.get();
         continue;
       }
       curr = counter.get();
       long delta = curr - prev;
+      sb.append("i = ").append(i).append(", delta = ").append(delta)
+              .append(", alloc ratio = ")
+              .append(managedPool.getAllocationCount()).append('/').append(managedPool.getFailedAllocationCount())
+              .append('\n');
       prev = curr;
       if (i > 40) {
+        if (delta > 5) {
+        }
         assertThat(delta).isLessThanOrEqualTo(5);
       }
     }
+    System.out.print(sb);
   }
 }