async-profiler
ghost-chase-condition
| async-profiler | ghost-chase-condition | |
|---|---|---|
| 8 | 5 | |
| 5,883 | 2 | |
| - | - | |
| 8.4 | 4.7 | |
| about 1 year ago | about 2 years ago | |
| C++ | Java | |
| Apache License 2.0 | MIT License |
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async-profiler
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Migrating a Spring Boot application to Quarkus
Using the Async Profiler we were able to build flamegraphs for the first and second queries to picture the differences in path length of the two transactions execution.
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Making Code Faster
> The other two languages I’ve used mostly in recent decades are Java and Ruby and the profiler situation is for both those languages is kind of shitty. I had to pay real money to get the Java profiler I used at AWS and while it worked, it was klunky, not fun to use.
These days, async profiler (https://github.com/jvm-profiling-tools/async-profiler) is much better than the Go tooling for performance. It is a joy to use and features a top-like view for the hottest methods. It works for locks, allocations and CPU time. It also integrates with JMH.
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Why would a Java prime sieve run at only half its speed _some_ of the times?
Also, running it under a profiler (I recommend async-profiler[1]) should give you a good idea of where the slowdown occurs which might help you pin it down further.
[1] https://github.com/jvm-profiling-tools/async-profiler
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Is there a way to know if my java game is slow on other computers?
Profile it. async-profiler is really great. Alternatively you can check out VisualVM/JProfiler/YourKit
- Best performance monitoring tools?
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Rust Option 30x more efficient to return than Java Optional
async-profiler is really great at analyzing allocations, give it a shot!
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Ask Java: what are some JFR-based tools that you enjoy?
JFR to Flame Graph Converter
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Utility script for generating flamegraphs from JFR logs without dependencies.
Async Profiler converter tool does support JFR to Flame Graph, JFR to FlameScope, collapsed stacks to Flame Graph -https://github.com/jvm-profiling-tools/async-profiler#download
ghost-chase-condition
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Why would a Java prime sieve run at only half its speed _some_ of the times?
Thanks! It does and it does not. Here's 100 rounds where it does: https://github.com/PEZ/ghost-chase-condition/tree/master/tes...
But in other cases I have it seems to not help that much. Not sure how to minimize those, but will try figure it out.
What are some alternatives?
container-jfr - Secure JDK Flight Recorder management for containerized JVMs
Paguro - Generic, Null-safe, Immutable Collections and Functional Transformations for the JVM
junit-jfr - a JUnit 5 extension that generates JFR events
.NET Runtime - .NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
jmh - https://openjdk.org/projects/code-tools/jmh
for-linux - Docker Engine for Linux
jfr-libraries - a list of libraries that generate JFR events
java-perf-workshop - Guided walkthrough to understand the performance aspects of a Java web service
Arthas - Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas
gctoolkit - Tool for parsing GC logs
opentelemetry-java-instrumentation - OpenTelemetry auto-instrumentation and instrumentation libraries for Java
array - Simple array language written in kotlin