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Haskell Runtime

Haskell runtime (officially GHC RTS — Glasgow Haskell Compiler Runtime System) wo underlying system…

Overview
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Haskell Runtime — Quick Facts

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Property: Detail

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Full Name: GHC Runtime System (GHC RTS)

Part Of: GHC (Glasgow Haskell Compiler)

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Written In: C and Cmm (C--)

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Infobox

📚 | Property | Detail | |---|---| | Full Name | GHC Runtime System (GHC RTS) | | Part Of |…
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Why Haskell Needs a Special Runtime

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Haskell lazy by default hai —…

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Runtime ko thunks manage karne…

Jab thunk "forced" hota hai,…

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Ye C/Java me nahi hota — wahan sab…

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RTS Architecture

🎯 `mermaid flowchart TD BINARY["Compiled Haskell Binary"] --> RTS["GHC Runtime System…
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Thunks and Lazy Evaluation

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Thunk = ek pointer jo ek…

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Jab Haskell me likho let x = 1 +…

Instead ek thunk banata hai: "jab…

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Ye Haskell ka call-by-need…

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Garbage Collector

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Generational hypothesis — most…

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Parallel GC — multiple cores par…

Concurrent GC — Not confirmed —…

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Low pause times — nursery (Gen 0)…

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Green Threads and Concurrency

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M green threads mapped to N OS…

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Default: N = 1 (single OS thread)

+RTS -N4 → 4 OS threads…

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Key RTS Flags

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Everything between +RTS and -RTS…

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Everything else is for the program

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Profiling and Observability

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Total bytes allocated

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Max residency (peak live memory)

GC time (percentage of total)

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Productivity (time doing useful…

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Haskell RTS vs Other Runtimes

📚 | Aspect | Haskell (GHC RTS) | JVM (Java/Kotlin) | V8 (JavaScript) | Go Runtime |…
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Performance Tuning

💡 | Scenario | Tuning Approach | |---|---| | High GC percentage (>30%) | Increase nursery:…
Comparison

Haskell RTS vs Other Runtimes

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Lazy Evaluation: Yes (thunks, STG…

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GC Type: Generational copying

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Threading: Green threads (M:N)

Diagram
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Visual Flow

📊 Diagram visualization — details in narration
Related Topics

See Also

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Haskell

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Haskell Debugging

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Garbage Collection.md)

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Lazy Evaluation

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Green Thread

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Concurrency.md)

Quick Quiz
🧠 QUIZ TIME

Quiz — Question 1

Haskell Runtime ka sabse sahi definition kya hai?

Quick Quiz
🧠 QUIZ TIME

Quiz — Question 2

Haskell Runtime ka 'Full Name' kya hai?

Complete! 🎉
COMPLETE

Haskell Runtime Complete!

Aliens Wiki · HIEN · Cinematic Knowledge

Haskell Runtime Complete

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Haskell

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