Linux kernel proposal introduces spawn templates for process creation
Original: Moving beyond fork() + exec()
Why This Matters
Could significantly improve Linux system performance for applications with repeated process spawning
Li Chen proposed spawn templates for Linux kernel to optimize fork()+exec() pattern. New system calls spawn_template_create() and spawn_template_spawn() would cache executable information to reduce costs of repeatedly launching same programs, though current proposal won't be accepted as-is.
Li Chen's kernel patch introduces spawn templates to address expensive fork()+exec() operations. The fork() system call copies entire process state including memory, often immediately discarded by exec(). The proposal adds spawn_template_create() to cache executable information via file descriptor or path, and spawn_template_spawn() for actual invocation with specific arguments, environment, and actions. Templates benefit applications repeatedly running same executables like Git operations. The spawn_template_create_args structure specifies executable details while spawn_template_spawn_args handles per-invocation specifics including argv, environment, and file descriptor changes through action arrays. Though this specific implementation won't be accepted, it may guide future process-creation primitives in Linux.