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| author | Ian Lance Taylor <iant@golang.org> | 2021-04-29 19:08:54 -0700 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2021-09-14 00:29:16 +0000 |
| commit | 71adc658deddc46a30bf690d37716d16cfccced7 (patch) | |
| tree | 3da539ff1f3d0eee6ae3a4b5eeabe8f6af9816f9 /src/database | |
| parent | 146e8d4994052ee4a58bec7e2cf37e568ce1e4e5 (diff) | |
| download | go-71adc658deddc46a30bf690d37716d16cfccced7.tar.xz | |
runtime: change time.now to ABIInternal
This reduces the number of instructions executed for time.now by nine,
by eliminating the wrapper. Somehow BenchmarkNow is 0.2ns slower.
On the other hand BenchmarkNowUnixNano is 0.8ns faster.
name old time/op new time/op delta
AfterFunc-12 66.7µs ± 4% 67.3µs ± 2% ~ (p=0.573 n=20+18)
After-12 97.6µs ± 4% 97.4µs ± 4% ~ (p=0.758 n=20+20)
Stop-12 66.7µs ±12% 64.8µs ±10% ~ (p=0.072 n=20+20)
SimultaneousAfterFunc-12 109µs ± 0% 110µs ± 1% +1.47% (p=0.000 n=17+20)
StartStop-12 31.9µs ±15% 32.7µs ±14% ~ (p=0.799 n=20+20)
Reset-12 3.67µs ± 2% 3.68µs ± 2% ~ (p=0.132 n=20+20)
Sleep-12 132µs ± 2% 133µs ± 2% +0.70% (p=0.035 n=20+19)
Ticker-12 32.4µs ± 1% 32.3µs ± 2% ~ (p=0.270 n=20+19)
TickerReset-12 3.71µs ± 2% 3.74µs ± 2% +0.89% (p=0.012 n=20+20)
TickerResetNaive-12 65.7µs ±10% 67.2µs ±10% ~ (p=0.174 n=20+20)
Now-12 29.6ns ± 1% 29.8ns ± 0% +0.78% (p=0.000 n=17+17)
NowUnixNano-12 31.1ns ± 1% 30.3ns ± 0% -2.69% (p=0.000 n=19+18)
NowUnixMilli-12 30.9ns ± 0% 31.1ns ± 0% +0.90% (p=0.000 n=18+20)
NowUnixMicro-12 30.9ns ± 0% 31.1ns ± 1% +0.68% (p=0.000 n=20+18)
Format-12 304ns ± 1% 301ns ± 2% -0.81% (p=0.004 n=18+19)
FormatNow-12 187ns ± 2% 185ns ± 2% -0.90% (p=0.036 n=20+18)
MarshalJSON-12 267ns ± 3% 265ns ± 3% -1.00% (p=0.004 n=18+18)
MarshalText-12 267ns ± 2% 265ns ± 3% -0.87% (p=0.038 n=19+20)
Parse-12 150ns ± 1% 149ns ± 1% -0.83% (p=0.000 n=18+20)
ParseDuration-12 79.6ns ± 0% 80.1ns ± 1% +0.61% (p=0.000 n=20+20)
Hour-12 4.42ns ± 1% 4.45ns ± 0% +0.83% (p=0.000 n=20+20)
Second-12 4.42ns ± 0% 4.42ns ± 1% ~ (p=0.075 n=18+20)
Year-12 11.1ns ± 1% 11.1ns ± 1% ~ (p=0.489 n=20+19)
Day-12 14.8ns ± 1% 14.8ns ± 0% ~ (p=0.616 n=20+18)
ISOWeek-12 17.2ns ± 1% 17.2ns ± 0% ~ (p=0.179 n=20+19)
name old avg-late-ns new avg-late-ns delta
ParallelTimerLatency-12 380k ± 4% 379k ± 3% ~ (p=0.879 n=20+19)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=1-12 137k ± 3% 137k ± 2% ~ (p=0.261 n=19+18)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=2-12 106k ±16% 95k ± 8% -9.76% (p=0.003 n=19+20)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=3-12 88.6k ±22% 74.6k ± 3% -15.78% (p=0.000 n=19+20)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=4-12 76.1k ±18% 70.8k ± 5% -7.04% (p=0.020 n=20+20)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=5-12 67.3k ±27% 65.6k ±13% ~ (p=0.211 n=16+18)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=6-12 59.5k ±24% 57.3k ±32% ~ (p=0.607 n=19+20)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=7-12 41.8k ±34% 46.2k ±33% +10.54% (p=0.039 n=17+20)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=8-12 57.5k ±37% 65.6k ±46% ~ (p=0.283 n=17+20)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=9-12 118k ±60% 136k ±59% ~ (p=0.169 n=19+18)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=10-12 3.66M ±236% 2.55M ±36% ~ (p=0.158 n=16+20)
StaggeredTickerLatency/work-dur=2ms/tickers-per-P=1-12 81.7k ± 4% 80.7k ± 5% ~ (p=0.107 n=20+19)
name old max-late-ns new max-late-ns delta
ParallelTimerLatency-12 5.88M ±124% 7.28M ±183% ~ (p=0.640 n=20+20)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=1-12 384k ±17% 371k ±11% ~ (p=0.540 n=17+17)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=2-12 503k ±180% 373k ±19% ~ (p=0.057 n=17+18)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=3-12 519k ±129% 340k ±17% -34.47% (p=0.000 n=18+19)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=4-12 491k ±141% 341k ±26% -30.52% (p=0.015 n=18+17)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=5-12 457k ±123% 405k ±48% ~ (p=0.786 n=17+17)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=6-12 491k ±85% 502k ±74% ~ (p=0.916 n=18+19)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=7-12 572k ±100% 574k ±65% ~ (p=0.858 n=18+17)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=8-12 1.95M ±205% 1.65M ±155% ~ (p=0.641 n=18+19)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=9-12 7.77M ±104% 8.72M ±103% ~ (p=0.512 n=20+20)
StaggeredTickerLatency/work-dur=300µs/tickers-per-P=10-12 29.5M ±187% 18.5M ±43% ~ (p=0.186 n=18+20)
StaggeredTickerLatency/work-dur=2ms/tickers-per-P=1-12 981k ±14% 1033k ±12% +5.30% (p=0.048 n=20+18)
Change-Id: Ie794a932a929b46053a6c3020b67d640b98d2335
Reviewed-on: https://go-review.googlesource.com/c/go/+/315369
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Diffstat (limited to 'src/database')
0 files changed, 0 insertions, 0 deletions