https://github.com/devlights/java-graalvm-native-image-example
Oracle GraalVM example by java. (using native-image)
https://github.com/devlights/java-graalvm-native-image-example
Last synced: about 2 months ago
JSON representation
Oracle GraalVM example by java. (using native-image)
- Host: GitHub
- URL: https://github.com/devlights/java-graalvm-native-image-example
- Owner: devlights
- License: mit
- Created: 2023-07-06T05:57:51.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2023-07-09T14:42:35.000Z (almost 2 years ago)
- Last Synced: 2025-02-12T08:58:27.955Z (4 months ago)
- Language: Java
- Size: 7.81 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# java-graalvm-native-image-example
Oracle GraalVM example by java. (using native-image)
## Requirements
### [GraalVM](https://www.graalvm.org/)
```sh
$ wget https://download.oracle.com/graalvm/20/latest/graalvm-jdk-20_linux-x64_bin.tar.gz
$ tar zxf graalvm-jdk-*.tar.gz
$ mv graalvm-jdk-*/ graalvm
$ graalvm/bin/gu install native-image
```
### [Task](https://taskfile.dev/)
```sh
$ go install github.com/go-task/task/v3/cmd/task@latest
```
## How to
### Run
```sh
$ task helloworld
task: [install-nativeimage] /workspace/java-graalvm-native-image-example/graalvm/bin/gu install native-image
Picked up JAVA_TOOL_OPTIONS: -Xmx3489m
Downloading: Artifacts catalog from gds.oracle.com
Skipping ULN EE channels, no username provided.
Downloading: Component catalog from www.graalvm.org
Processing Component: Native Image
Component Native Image (org.graalvm.native-image) is already installed.
task: [helloworld] rm -f ./app ./App.class
task: [helloworld] /workspace/java-graalvm-native-image-example/graalvm/bin/javac App.java
Picked up JAVA_TOOL_OPTIONS: -Xmx3489m
task: [helloworld] /workspace/java-graalvm-native-image-example/graalvm/bin/native-image App
========================================================================================================================
GraalVM Native Image: Generating 'app' (executable)...
========================================================================================================================
[1/8] Initializing... (7.8s @ 0.18GB)
Java version: 20.0.1+9, vendor version: Oracle GraalVM 20.0.1+9.1
Graal compiler: optimization level: 2, target machine: x86-64-v3, PGO: ML-inferred
C compiler: gcc (linux, x86_64, 11.3.0)
Garbage collector: Serial GC (max heap size: 80% of RAM)
[2/8] Performing analysis... [*****] (12.9s @ 0.27GB)
2,067 (61.54%) of 3,359 types reachable
2,054 (47.01%) of 4,369 fields reachable
9,606 (38.98%) of 24,641 methods reachable
670 types, 106 fields, and 419 methods registered for reflection
49 types, 32 fields, and 48 methods registered for JNI access
4 native libraries: dl, pthread, rt, z
[3/8] Building universe... (1.6s @ 0.42GB)
[4/8] Parsing methods... [**] (4.8s @ 0.40GB)
[5/8] Inlining methods... [***] (1.1s @ 0.34GB)
[6/8] Compiling methods... [******] (34.0s @ 0.35GB)
[7/8] Layouting methods... [*] (0.8s @ 0.38GB)
[8/8] Creating image... [*] (1.0s @ 0.42GB)
3.70MB (48.26%) for code area: 4,490 compilation units
3.61MB (47.09%) for image heap: 56,776 objects and 1 resources
364.72kB ( 4.65%) for other data
7.66MB in total
------------------------------------------------------------------------------------------------------------------------
Top 10 origins of code area: Top 10 object types in image heap:
2.04MB java.base 721.46kB byte[] for code metadata
1.32MB svm.jar (Native Image) 473.01kB byte[] for java.lang.String
100.54kB com.oracle.svm.svm_enterprise 378.19kB java.lang.String
51.70kB jdk.proxy1 344.98kB java.lang.Class
44.55kB jdk.proxy3 264.89kB byte[] for general heap data
34.19kB org.graalvm.nativeimage.base 164.19kB java.util.HashMap$Node
30.61kB org.graalvm.sdk 112.63kB char[]
19.63kB jdk.internal.vm.compiler 96.91kB byte[] for reflection metadata
18.07kB jdk.internal.vm.ci 87.88kB java.lang.Object[]
15.65kB jdk.proxy2 80.74kB com.oracle.svm.core.hub.DynamicHubCompanion
816.00B for 1 more packages 527.61kB for 553 more object types
------------------------------------------------------------------------------------------------------------------------
Recommendations:
G1GC: Use the G1 GC ('--gc=G1') for improved latency and throughput.
PGO: Use Profile-Guided Optimizations ('--pgo') for improved throughput.
HEAP: Set max heap for improved and more predictable memory usage.
CPU: Enable more CPU features with '-march=native' for improved performance.
QBM: Use the quick build mode ('-Ob') to speed up builds during development.
------------------------------------------------------------------------------------------------------------------------
2.3s (3.5% of total time) in 175 GCs | Peak RSS: 1.09GB | CPU load: 3.75
------------------------------------------------------------------------------------------------------------------------
Produced artifacts:
/workspace/java-graalvm-native-image-example/helloworld/app (executable)
========================================================================================================================
Finished generating 'app' in 1m 4s.
task: [helloworld] file ./app
./app: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=acc49c38c534692b87b663e9b88fe8b2c4d0ed7e, for GNU/Linux 3.2.0, with debug_info, not stripped
task: [helloworld] ./app
hello world
```
## REFERENCES
- https://www.graalvm.org/
- https://medium.com/graalvm/a-new-graalvm-release-and-new-free-license-4aab483692f5
- https://www.graalvm.org/latest/reference-manual/native-image/