JMH
JITWatch
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| JMH | JITWatch | |
|---|---|---|
| 3 | 10 | |
| 771 | 2,940 | |
| 1.2% | 0.8% | |
| 0.0 | 0.0 | |
| 4 days ago | 3 months ago | |
| Scala | Java | |
| Apache License 2.0 | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
JMH
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Scala collections benchmark - revisited
Also, it has an amazing SBT plugin integration.
JITWatch
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It's 2023, so of course I'm learning Common Lisp
You can kind of do the same as DISASSEMBLE in Clojure.
There are some helper projects like https://github.com/Bronsa/tools.decompiler, and on the OpenJDK JitWatch (https://github.com/AdoptOpenJDK/jitwatch), other JVMs have similar tools as well.
It isn't as straightforward as in Lisp, but it is nonetheless doable.
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SIMD accelerated sorting in Java – how it works and why it was 3x faster
If you use Oracle's own IDE, it will support it out of the box, as it already did on Sun's days.
Then there are other ways depending on which JVM implementation is used.
On OpenJDK's case you can load runtime plugin to do it
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Compiler Explorer - Java support
We use https://github.com/AdoptOpenJDK/jitwatch for this.
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Why Zig When There Is Already C++ and Rust?
If you already know any JVM or .NET language, the first step would be to understand the full stack, you don't need C for that.
Many of us were doing systems programming with other languages before C went mainstream.
What you need to learn is computer architecture.
Getting back to JVM or .NET, you can get hold of JIT Watch, VS debug mode or play online in SharpLab.
Get to understand how some code gets translated into MSIL/JVM, and how those bytecodes end up being converted into machine code.
https://github.com/AdoptOpenJDK/jitwatch/wiki/Screenshots
Languages like F# and C# allow you to leave the high level comfort and also do most of the stuff you would be doing in C.
Or just pick D, which provides the same comfort and goes even further in low level capabilities.
Use them to write a toy compiler, userspace driver, talking to GPIO pins in a PI, manipulating B-Tree data stuctures directly from inodes, a TCP/IP userspace driver.
Not advocating not to learn Zig, do it still, the more languages one learns the better.
Only advocating what might be an easier transition path into learning about systems programming concepts.
What are some alternatives?
SharpLab - .NET language playground
honest-profiler - A sampling JVM profiler without the safepoint sample bias
jHiccup - jHiccup is a non-intrusive instrumentation tool that logs and records platform "hiccups" - including the JVM stalls that often happen when Java applications are executed and/or any OS or hardware platform noise that may cause the running application to not be continuously runnable.
Sniffy - Sniffy - interactive profiler, testing and chaos engineering tool for Java
LatencyUtils - Utilities for latency measurement and reporting
quickperf - QuickPerf is a testing library for Java to quickly evaluate and improve some performance-related properties
sbt-sonatype - A sbt plugin for publishing Scala/Java projects to the Maven central.
sbteclipse - Plugin for sbt to create Eclipse project definitions