commit | 931365763a294950200096d071a35f799ffade2c | [log] [tgz] |
---|---|---|
author | Carlo Alberto Ferraris <cafxx@strayorange.com> | Sat Aug 24 08:59:01 2019 +0900 |
committer | Emmanuel Odeke <emm.odeke@gmail.com> | Sun Sep 29 14:27:05 2019 +0000 |
tree | ad6eb4ac98137df44e6a3b0dc74f5c7bcb4f378e | |
parent | 57662b1575030aa09043cd7a48425abdc6e0e0a3 [diff] |
math/rand: devirtualize interface in lockedSource Avoid interface calls, enable inlining, and store the rngSource close to the Mutex to exploit better memory locality. Also add a benchmark to properly measure the threadsafe nature of globalRand. On a linux/amd64 VM: name old time/op new time/op delta Int63Threadsafe-4 36.4ns ±12% 20.6ns ±11% -43.52% (p=0.000 n=30+30) Int63ThreadsafeParallel-4 79.3ns ± 5% 56.5ns ± 5% -28.69% (p=0.000 n=29+30) Change-Id: I6ab912c1a1e9afc7bacd8e72c82d4d50d546a510 Reviewed-on: https://go-review.googlesource.com/c/go/+/191538 Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com> Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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