Unverified50% confidenceFactExact time
There is a significant difference between the heap memory configured for the JVM and the actual memory occupied by the process; a JVM process configured with a 256MB heap may have an actual RSS of 400MB or even higher
1
Sources
50%
Confidence
Long-term
Relevance
9/5/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe default thread stack size of the JVM is typically 512KB to 1MB; an application with 200 threads may consume more than 100MB from thread stacks alone79% similarUnverifiedThe JVM's own fixed overhead when idle, including metaspace and off-heap memory, typically exceeds 256 MB to 512 MB, and GC requires the heap upper limit to be configured at 2 to 4 times the actual usage.78% similarUnverifiedJenkins安装时需要配置特定的Java环境，且启动JVM时会预分配约为物理内存1/4的堆内存，整体运行可消耗512MB～1GB内存75% similarUnverifiedJVM默认配置下堆内存通常预分配为物理内存的1/473% similarUnverifiedWASM模块拥有独立的线性内存空间，通常为64KB的页粒度，JS侧通过WebAssembly.Memory对象的ArrayBuffer视图直接读写这块内存71% similar
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