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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2024-09-29 04:24:00 +0200 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2024-09-30 15:38:26 +0000 |
| commit | 86781963cc2bf0d3dbd1eccebd8a2f080846f3ee (patch) | |
| tree | 11d8d0e67a904ab135900c6b7bc2f258857f0e81 /src/errors/errors.go | |
| parent | 327074551a2f22f2c0b8e444d1673c86f77ca745 (diff) | |
| download | go-86781963cc2bf0d3dbd1eccebd8a2f080846f3ee.tar.xz | |
runtime: align vgetrandom states to cache line
This prevents false sharing, which makes a large difference on machines
with several NUMA nodes, such as this dual socket server:
cpu: Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz
│ sec/op │ sec/op vs base │
ParallelGetRandom-128 0.7944n ± 5% 0.4503n ± 0% -43.31% (p=0.000 n=10)
│ B/s │ B/s vs base │
ParallelGetRandom-128 4.690Gi ± 5% 8.272Gi ± 0% +76.38% (p=0.000 n=10)
Change-Id: Id4421e9a4c190b38aff0be4c59e9067b0a38ccd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/616535
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Jason Donenfeld <Jason@zx2c4.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Diffstat (limited to 'src/errors/errors.go')
0 files changed, 0 insertions, 0 deletions