Linux kernel proposal explores spawn templates as a faster alternative to repeated fork() and exec() process launches

LWN covers a proposal by Li Chen to add spawn templates to the Linux kernel, aimed at speeding up applications that repeatedly launch the same executable. The current patch set is unlikely to be accepted as-is, but it highlights long-standing inefficiencies in the traditional fork() followed by exec() model.

The discussion shows renewed interest in modernizing Unix-style process creation for workloads where repeated subprocess launches are common. Even if this design is rejected, the kernel community may move toward a new process-creation primitive that reduces overhead without sacrificing Linux’s flexibility.

Moving beyond fork() + exec()