Shenghou Ma
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4022fc4e21
|
runtime: use vDSO clock_gettime for time.now & runtime.nanotime on Linux/amd64
Performance improvement aside, time.Now() now gets real nanosecond resolution
on supported systems.
Benchmark done on Core i7-2600 @ 3.40GHz with kernel 3.5.2-gentoo.
original vDSO gettimeofday:
BenchmarkNow 100000000 27.4 ns/op
new vDSO gettimeofday fallback:
BenchmarkNow 100000000 27.6 ns/op
new vDSO clock_gettime:
BenchmarkNow 100000000 24.4 ns/op
R=golang-dev, bradfitz, iant, iant
CC=golang-dev
https://golang.org/cl/6814103
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2012-11-09 14:19:07 +08:00 |
|
Ivan Krasin
|
5287175ad9
|
runtime: add vdso support for linux/amd64. Fixes issue 1933.
R=iant, imkrasin, krasin, iant, minux.ma, rsc, nigeltao, r, fullung
CC=golang-dev
https://golang.org/cl/6454046
|
2012-08-31 18:07:04 -04:00 |
|
