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lsr: ls with io_uring

(rockorager.dev)
335 points mpweiher | 2 comments | 18 Jul 25 12:40 UTC | HN request time: 0.001s | source
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swiftcoder ◴[18 Jul 25 16:51 UTC] No.44606976[source]▶
Kind of fascinating that slashing syscalls by ~35x (versus the `ls -la` benchmark) is "only" worth a 2x speedup
replies(3): >>44607779 #>>44608313 #>>44613022 #
1. Galanwe ◴[18 Jul 25 18:40 UTC] No.44608313[source]▶
These syscalls are mostly through VDSO, so not very costly
replies(1): >>44609560 #
2. wahern ◴[18 Jul 25 20:37 UTC] No.44609560[source]▶
The only VDSO-capable calls are clock_gettime, getcpu, getrandom, gettimeofday, and time. (Other architectures have some more, mostly related to signals and CPU cache flushing.)