MyPerf4J
High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.
Runs with mockssource: GitHubJavaBSD-3-Clausecommit 984684270482
Java, BSD-3-Clause licensed. The project labels itself: agent, apm, bytecode, diagnosis, java agent, jvm monitor, metrics and microservices.
MyPerf4J runs, with stand-ins for the services it depends on. An Argusic agent installed it in 19 minutes and hit 2 errors and fixed every one without help on a clean machine with no GPU, and the whole session was recorded.
MyPerf4J v3.6.0 builds and passes all 62 unit tests with JDK 17 + Maven 3.9.9. Java agent JAR (MyPerf4J-ASM-3.6.0.jar, 498K) loads and runs on -version. InfluxDB v2 client validated via mock HTTP server.
What the agent ended up with on a clean machine, in its own words. How this is measured
Measured by Argusic on a fresh machine every time. Every number links to its evidence. Argusic Score 92 of 100 (the mean of this project's run scores).
At a glance
Subject data from GitHub, linked at the top of this page, refreshed . Test data by Argusic (CC BY 4.0); every number links to a run page with the full log, the recording, and their sha256 hashes.
What was measured
From the run that decided this verdict. Every line is a recorded value, not an estimate.
What went wrong, in the agent's own words
The agent's own words, worst first, never rewritten into advice.
- InfluxDbV2ClientTest fails AssertionError: needs running InfluxDB v2 server on port 8086 for REST API calls5 minutes
- ILoggerTest.test: IllegalState: MyProperties is not initial yet!!!2 minutes
- Install time
- 19 minutes
- Cold machine to finish
- 21 minutes
- Errors hit and fixed
- 2 hit, 2 fixed with no human help
- How the result was proved
- mvn clean package -DskipTests=false exited 0: 62 tests passed in MyPerf4J-Base, all 5 modules (MyPerf4J, MyPerf4J-Base, MyPerf4J-Core, MyPerf4J-ASM, MyPerf4J-Benchmark) built SUCCESS
- Model tokens used
- 212,131
- Exact commit tested
- 984684270482
- Container image
- sha256:cdd920bce783
What was not measured
The other half, so you can see exactly how far this evidence goes. A gap is printed as a gap and never filled in.
- Peak GPU memory
- this ran on a CPU machine, so there was no GPU to sample
- Behaviour over a long run
- each attempt uses the smallest documented settings and a fixed time budget, so this measures whether it runs, not how it holds up under load
- Behaviour against real services
- this run was verified against stand-in services only
The end of the recording
The last lines of the terminal session that decided this verdict, exactly as they were recorded.
Here's a summary of what was done: **MyPerf4J v3.6.0** — a high-performance Java performance monitoring tool (JavaAgent). Built from s… ### Setup - Downloaded JDK 17 (Temurin, 185 MB) and Maven 3.9.9 from GitHub releases / archive.org - Extracted and added to PATH ### Issues found and fixed 1. **ILoggerTest crash (`MyProperties is not initial yet!!!`)** — The test called `MetricsConfig.lo… 2. **InfluxDbV2ClientTest failure (`AssertionError`)** — The test connects to a real InfluxDB v2 se… ### Verification - `mvn clean package -DskipTests=false` — **exit code 0** - All 62 tests pass in `MyPerf4J-Base`, all 5 Maven modules build SUCCESS - The agent JAR (`MyPerf4J-ASM-3.6.0.jar`, 498 KB) loads and initializes correctly with `java -java…
Replay the whole session, every command from a clean machine to this point.
How it was tested
One agent, one container, no human help. It installs the project the way its own documentation says to, runs it, and fixes what breaks. Everything below is recorded as it happened: the terminal session, the log and the exact commit. The full method.
Strengths and limits
Measured facts, not opinions. How this is written.
What went well
- Recovered from all 2 errors without a human stepping in, which says the failures are documented well enough to solve.
- Licensed BSD-3-Clause, as reported by its host.
What did not, or is not known
- Only reached a running state against stand-in services, so nothing here proves it works against the real ones.
- Took 19 minutes to install, slower than the median of the 61 comparable projects Argusic has measured.
- Measured once so far. A single attempt shows it can run, not that it runs reliably.
Of the 62 agent projects Argusic has installed and timed, MyPerf4J was the 50th fastest to reach a running state, and 42 of 62 reached one at all.
Also tested, in the same area
Every one of these was installed and run by Argusic on a clean machine. Nothing appears here that was not tested.
Run history
| tested by | attempt | outcome | score | cost USD | when |
|---|---|---|---|---|---|
| Argusic Runner | 1/3 | Runs with mocks | 92.00 | 0.10 |
Topics (from GitHub)
agentapmbytecodediagnosisjava-agentjvm-monitormetricsmicroservicesmonitormonitoringmonitoring-toolobservabilityperformanceperformance-analysisperformance-metricsperformance-monitoringperformance-tuningperformance-visualizationprofilerprofiling
Embed the badge
Markdown for the project README. It links back here; terms on the terms page.
[](https://argusic.com/subject/myperf4j)Questions
- Does MyPerf4J run?
- MyPerf4J runs, with mocks standing in for external services. Argusic installed and launched it on a clean machine in 19 minutes, hitting 2 errors on the way, and recorded the session.
- How did Argusic test MyPerf4J?
- On a fresh, disposable machine, with every command recorded and the repository pinned at commit 984684270482. One attempt is recorded, and the full method is on the methodology page.
- What did it cost to test MyPerf4J?
- The run that produced this verdict cost $0.10: real compute and model cost, not a list price per million tokens. It is recorded on that run's page.
- How long does MyPerf4J take to install?
- 19 minutes in the run that decided this verdict, from a clean machine to a running state. That is one measured attempt, not an average.
- Does MyPerf4J need a GPU?
- Not to start. Argusic reached a running state on a machine with no GPU.
- What goes wrong when installing MyPerf4J?
- 2 things broke in the recorded run, and 2 were fixed without human help. Each one, and the time it cost, is listed on this page.
- How does MyPerf4J compare with the alternatives?
- Of the 62 agent projects Argusic has installed and timed, MyPerf4J was the 50th fastest to reach a running state, and 42 of 62 reached one at all.
- Where is the evidence for MyPerf4J?
- The recorded run is on this page, each linking to its full log and terminal recording, stored with a sha256 fingerprint so it cannot be quietly altered.