// multi-utility computation suite · offline · instant · precise
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│ [c] calcalyst_ │
│ computation suite │
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build.memory-heap-pressure Calculator
Calculates Node.js heap pressure from allocated heap size vs. V8 heap limit, and estimates GC pause frequency and duration at current allocation rate. Sustained heap usage above 85% triggers aggressive GC — visible as latency spikes in production request traces.
Inputs
Heap Mb
Reference formula or conversion factor shown for context.
Alloc Rate
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Live Set
Reference formula or conversion factor shown for context.
Results
free heap
Reference formula or conversion factor shown for context.
GC frequency
Sample size or count used in the calculation.
estimated pause
The value at the specified point or condition.
headroom
Buffer between current performance and a limit or target. Positive headroom is safety margin; zero or negative headroom means the limit has been hit.