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Ian Lance Taylor 71adc658de 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>
2021-09-14 00:29:16 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api net: reduce allocations for UDP send/recv on Windows 2021-08-16 23:57:10 +00:00
doc spec: fix prose about terminating statements 2021-09-13 22:57:34 +00:00
lib/time lib/time: fix RFC 6557 url 2021-08-15 02:18:46 +00:00
misc misc/wasm: enable ECMAScript strict mode 2021-09-03 19:56:09 +00:00
src runtime: change time.now to ABIInternal 2021-09-14 00:29:16 +00:00
test cmd/compile: save the note of fields when translating struct 2021-09-13 21:48:41 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: update name 2021-06-01 17:08:12 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md
CONTRIBUTORS CONTRIBUTORS: update for the Go 1.17 release 2021-08-12 17:43:16 +00:00
LICENSE
PATENTS
README.md README: pull gopher image from website 2021-02-16 18:25:10 +00:00
SECURITY.md

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