On Thu, May 28, 2026 at 2:55 AM Li Chen <[email protected]> wrote: >
> > The template pins the executable and denies writes to that file while the > template fd is alive, Please don't. *Maybe* detect when it gets modified and clear your cache. Or develop a generic way to open a new fd that's an immutable view into an existing file such that the fd retains its contents even if the file changes. (Think a reflink that's not persistent and has no name -- you'll need some way to avoid resource exhaustion.) > > Workload Calls subprocess spawn_template time_s Delta > (workers) calls calls/s calls/s seconds > 1x16 6144 411.04 420.32 14.95/14.62 +2.26% > 2x8 6144 666.78 690.08 9.21/8.90 +3.49% > 4x4 6144 955.61 1003.25 6.43/6.12 +4.99% > 8x2 6144 1048.25 1069.18 5.86/5.75 +2.00% This is a lot of complexity in the kernel for a teeny tiny gain. I'm with Christian -- a better spawn API would be great (and much faster than fork/vfork + exec), but that's a different patch.
