posix-spawn
A Ruby library for fast process spawning using posix_spawn() and vfork() to avoid fork() overhead.
What is posix-spawn?
posix-spawn is a Ruby library that provides fast process spawning by using system interfaces like `posix_spawn()` and `vfork()` instead of traditional `fork()` calls. It solves the performance problem where `fork()` becomes slow as parent processes use more memory, making it ideal for applications that frequently spawn child processes.
Ruby developers building applications that need to spawn child processes efficiently, such as system tools, background job processors, or services using `Kernel#system`, `IO::popen`, or similar methods.
Developers choose posix-spawn for its significant performance improvements over standard Ruby process spawning methods, especially in memory-intensive applications, while maintaining compatibility with Ruby's native `Process::spawn` interface.
Overview
Ruby process spawning library
Use Cases
Best For
- Reducing process spawn times in memory-heavy Ruby applications
- Replacing slow fork+exec patterns in system tools and scripts
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