From 3f21c8bd1f0cd7f27df940505b249ba7798940cf Mon Sep 17 00:00:00 2001
From: Axel Boldt-Christmas <aboldtch@openjdk.org>
Date: Thu, 31 Jul 2025 13:08:29 +0000
Subject: [PATCH] 8361897: gc/z/TestUncommit.java fails with Uncommitted too
 slow

Reviewed-by: stefank, jsikstro
---
 test/hotspot/jtreg/gc/z/TestUncommit.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/test/hotspot/jtreg/gc/z/TestUncommit.java b/test/hotspot/jtreg/gc/z/TestUncommit.java
index 0ba4c55f22a..afb736501dd 100644
--- a/test/hotspot/jtreg/gc/z/TestUncommit.java
+++ b/test/hotspot/jtreg/gc/z/TestUncommit.java
@@ -108,7 +108,16 @@ public class TestUncommit {
             throw new Exception("Uncommitted too fast");
         }
 
+        // In typical conditions (system not over-provisioned or slow),
+        // uncommitting is expected to complete within 3 * ZUncommitDelay after
+        // the last commit. To accommodate less ideal environments, only
+        // durations exceeding 5 * ZUncommitDelay are flagged as errors.
+
         if (actualDelay > delay * 3) {
+            log(" *** Uncommit slower than expected. ***");
+        }
+
+        if (actualDelay > delay * 5) {
             throw new Exception("Uncommitted too slow");
         }