Elite Java

Low-memory JVM experiments. Graal Native. HotSpot intrinsics.

High-performance Java that defies the "enterprise bloat" stereotype. These experiments maximize throughput and minimize footprint via off-heap memory, SIMD, and native compilation.

Featured Experiments

Module	RSS (Native)	Key Technique
No-GC Parser	4.2 MB	Off-heap MemorySegment → AST
Native CLI	8.0 MB	Reflection-free GraalVM Native Image
SIMD Math	6.1 MB	VectorAPI + intrinsic inlining
Zero-Alloc Streams	5.8 MB	Primitive-specialized Spliterators

Technical Constraints

• Zero Reflection: Reflection-free architectures for maximum GraalVM compatibility.
• Memory Bound: Static heap targets of ≤ 32MB.
• Modern Core: Java 21+ Virtual Threads (Loom) and Structured Concurrency.
• No Bloat: Zero dependencies. No Spring, no Hibernate, no Jakarta.

Performance Profile

Task	Input	Java (Native)	Rust	Python
JSON Parse	1MB	3.2ms	2.1ms	187ms
CLI Startup	-	12ms	89μs	245ms
SIMD Vector	10^6	1.1ms	0.9ms	412ms

Philosophy

Java is often misused. We treat the JVM as a systems-level tool to achieve:

1. Mechanical Sympathy: Aligning data structures with L1/L2 cache lines.
2. Deterministic Latency: Eliminating GC pauses via stack-allocation and off-heap storage.
3. Instant Warmup: Leveraging AOT (Ahead-of-Time) compilation.

Usage

# Standard JVM (HotSpot)
./gradlew run

# Native Image (AOT)
./gradlew nativeCompile
./build/native/nativeCompile/experiment-name