JMeter 5.11负载测试遇端口4445等待提示，求解决建议

Let’s work through this issue together—when your test with 100 thread groups gets stuck at the Waiting for possible Shutdown/StopTestNow/HeapDump/ThreadDump message on port 4445 line, here are actionable fixes to try beyond the HTTP timeout settings you already have:

1. Validate Thread Group Configurations #

• Double-check each thread group’s Loop Count and Number of Threads: If any thread group is set to an infinite loop (Forever), it will never finish, causing the entire test to hang. Start with a minimal setup (1 thread, 1 loop per group) to confirm the test can complete, then scale up gradually.
• Verify if you’ve enabled Run thread groups consecutively (under Test Plan settings). This forces groups to run one after another—if an earlier group is stuck, all subsequent groups won’t start.

2. Inspect JMeter Logs for Errors #

Check the jmeter.log file in your JMeter bin directory for exceptions or warnings. Common issues here include:

• Failed connections to the target server (even with timeouts, misconfigured endpoints can cause retries)
• Missing variables or broken correlations that cause requests to fail repeatedly
• Out-of-memory errors or excessive garbage collection (GC) pauses

3. Increase JVM Heap Memory #

100 thread groups consume significantly more memory than a single group. The default JMeter heap size is often too small for this scale. Modify the HEAP parameter in jmeter.sh (Linux):

HEAP="-Xms2g -Xmx4g"

Adjust the values based on your server’s available RAM—aim for allocating 50-70% of free memory to JMeter to avoid memory bottlenecks.

4. Verify Command-Line Permissions & Paths #

• Ensure the output CSV and report folder exist and that JMeter has write permissions for them. Missing folders or permission issues can silently block test completion.
• Confirm your JMX file path is correct—typos or relative path errors can lead to incomplete test execution.

5. Disable Unnecessary Listeners #

GUI-only listeners like View Results Tree or Graph Results add overhead when running in non-GUI mode. Remove or disable these from your test plan before executing via the command line to reduce resource usage.

6. Test Thread Groups in Isolation #

Run a small subset of thread groups (e.g., 5-10) in the JMeter GUI first. This helps identify if a specific thread group has misconfigurations (like invalid HTTP requests, missing headers, or incorrect variable references) that are causing the entire test to hang.

内容的提问来源于stack exchange，提问作者Kushani Karunarathne