| commit | 51b027116c2c90e7cb938362b0134ff710fea54e | [log] [tgz] |
|---|---|---|
| author | Tobias Klauser <tklauser@distanz.ch> | Fri Mar 02 11:27:15 2018 +0100 |
| committer | Tobias Klauser <tobias.klauser@gmail.com> | Sat Mar 03 12:12:58 2018 +0000 |
| tree | 773d74d9a111aea28051bb7ef218675d44fce97e | |
| parent | c69f60d0715a836b739b34a92a56c1f7d29485a6 [diff] |
runtime: use vDSO for clock_gettime on linux/arm Use the __vdso_clock_gettime fast path via the vDSO on linux/arm to speed up nanotime and walltime. This results in the following performance improvement for time.Now on a RaspberryPi 3 (running 32bit Raspbian, i.e. GOOS=linux/GOARCH=arm): name old time/op new time/op delta TimeNow 0.99µs ± 0% 0.39µs ± 1% -60.74% (p=0.000 n=12+20) Change-Id: I3598278a6c88d7f6a6ce66c56b9d25f9dd2f4c9a Reviewed-on: https://go-review.googlesource.com/98095 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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