Some interesting preliminary timing of @musllibc's posix_spawn vs fork+exec shows it ~25x faster for large parent processes. (~360us vs 9ms)
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Replying to @RichFelker
#glibc has a vfork-based posix_spawn but it's only usable for trivial cases; others use fork.@musllibc posix_spawn always uses CLONE_VM.1 reply 0 retweets 1 like
This also means @musllibc posix_spawn will fill the fork gap on NOMMU systems cleanly/safely (unlike vfork) once we get NOMMU working.
8:24 PM - 23 May 2015
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