- 28 Apr, 2017 34 commits
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Austin Clements authored
It's no longer necessary to maintain the bitmap of noscan objects since we now use the span metadata to determine that they're noscan instead of the bitmap. The combined effect of segregating noscan spans and the follow-on optimizations is roughly a 1% improvement in performance across the go1 benchmarks and the x/benchmarks, with no increase in heap size. Benchmark details: https://perf.golang.org/search?q=upload:20170420.1 name old time/op new time/op delta Garbage/benchmem-MB=64-12 2.27ms ± 0% 2.25ms ± 1% -0.96% (p=0.000 n=15+18) name old time/op new time/op delta BinaryTree17-12 2.53s ± 2% 2.55s ± 1% +0.68% (p=0.001 n=17+16) Fannkuch11-12 3.02s ± 0% 3.01s ± 0% -0.15% (p=0.000 n=16+16) FmtFprintfEmpty-12 47.1ns ± 7% 47.0ns ± 5% ~ (p=0.886 n=20+17) FmtFprintfString-12 73.6ns ± 3% 73.8ns ± 1% +0.30% (p=0.026 n=19+17) FmtFprintfInt-12 80.3ns ± 2% 80.2ns ± 1% ~ (p=0.994 n=20+18) FmtFprintfIntInt-12 124ns ± 0% 124ns ± 0% ~ (all samples are equal) FmtFprintfPrefixedInt-12 172ns ± 1% 171ns ± 1% -0.72% (p=0.003 n=20+18) FmtFprintfFloat-12 217ns ± 1% 216ns ± 1% -0.27% (p=0.019 n=18+19) FmtManyArgs-12 490ns ± 1% 488ns ± 0% -0.36% (p=0.014 n=18+18) GobDecode-12 6.71ms ± 1% 6.73ms ± 1% +0.42% (p=0.000 n=20+20) GobEncode-12 5.25ms ± 0% 5.24ms ± 0% -0.20% (p=0.001 n=18+20) Gzip-12 227ms ± 0% 226ms ± 1% ~ (p=0.107 n=20+19) Gunzip-12 38.8ms ± 0% 38.8ms ± 0% ~ (p=0.221 n=19+18) HTTPClientServer-12 75.4µs ± 1% 76.3µs ± 1% +1.26% (p=0.000 n=20+19) JSONEncode-12 14.7ms ± 0% 14.7ms ± 1% -0.14% (p=0.002 n=18+17) JSONDecode-12 57.6ms ± 0% 55.2ms ± 0% -4.13% (p=0.000 n=19+19) Mandelbrot200-12 3.73ms ± 0% 3.73ms ± 0% -0.09% (p=0.000 n=19+17) GoParse-12 3.18ms ± 1% 3.15ms ± 1% -0.90% (p=0.000 n=18+20) RegexpMatchEasy0_32-12 73.3ns ± 2% 73.2ns ± 1% ~ (p=0.994 n=20+18) RegexpMatchEasy0_1K-12 236ns ± 2% 234ns ± 1% -0.70% (p=0.002 n=19+17) RegexpMatchEasy1_32-12 69.7ns ± 2% 69.9ns ± 2% ~ (p=0.416 n=20+20) RegexpMatchEasy1_1K-12 366ns ± 1% 365ns ± 1% ~ (p=0.376 n=19+17) RegexpMatchMedium_32-12 109ns ± 1% 108ns ± 1% ~ (p=0.461 n=17+18) RegexpMatchMedium_1K-12 35.2µs ± 1% 35.2µs ± 3% ~ (p=0.238 n=19+20) RegexpMatchHard_32-12 1.77µs ± 1% 1.77µs ± 1% +0.33% (p=0.007 n=17+16) RegexpMatchHard_1K-12 53.2µs ± 0% 53.3µs ± 0% +0.26% (p=0.001 n=17+17) Revcomp-12 1.13s ±117% 0.87s ±184% ~ (p=0.813 n=20+19) Template-12 63.9ms ± 1% 64.6ms ± 1% +1.18% (p=0.000 n=19+20) TimeParse-12 313ns ± 5% 312ns ± 0% ~ (p=0.114 n=20+19) TimeFormat-12 336ns ± 0% 333ns ± 0% -0.97% (p=0.000 n=18+16) [Geo mean] 50.6µs 50.1µs -1.04% This is a cherry-pick of dev.garbage commit edb54c300f, with updated benchmark results. Change-Id: Ic77faaa15cdac3bfbbb0032dde5c204e05a0fd8e Reviewed-on: https://go-review.googlesource.com/41253 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Rick Hudson <rlh@golang.org>
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Austin Clements authored
This is no longer necessary now that we can more efficiently consult the span's noscan bit. This is a cherry-pick of dev.garbage commit 312aa09996. Change-Id: Id0b00b278533660973f45eb6efa5b00f373d58af Reviewed-on: https://go-review.googlesource.com/41252 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Austin Clements authored
Currently, we mix objects with pointers and objects without pointers ("noscan" objects) together in memory. As a result, for every object we grey, we have to check that object's heap bits to find out if it's noscan, which adds to the per-object cost of GC. This also hurts the TLB footprint of the garbage collector because it decreases the density of scannable objects at the page level. This commit improves the situation by using separate spans for noscan objects. This will allow a much simpler noscan check (in a follow up CL), eliminate the need to clear the bitmap of noscan objects (in a follow up CL), and improves TLB footprint by increasing the density of scannable objects. This is also a step toward eliminating dead bits, since the current noscan check depends on checking the dead bit of the first word. This has no effect on the heap size of the garbage benchmark. We'll measure the performance change of this after the follow-up optimizations. This is a cherry-pick from dev.garbage commit d491e550c3. The only non-trivial merge conflict was in updatememstats in mstats.go, where we now have to separate the per-spanclass stats from the per-sizeclass stats. Change-Id: I13bdc4869538ece5649a8d2a41c6605371618e40 Reviewed-on: https://go-review.googlesource.com/41251 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: -
Austin Clements authored
In particular, this says that Frames.Function uniquely identifies a function within a program. We depend on this in various places that use runtime.Frames in std, but it wasn't actually written down. Change-Id: Ie7ede348c17673e11ae513a094862b60c506abc5 Reviewed-on: https://go-review.googlesource.com/41610Reviewed-by:
Ian Lance Taylor <iant@golang.org>
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Bryan C. Mills authored
Int and Float already used atomics. When many goroutines on many CPUs concurrently update a StringSet or a Map with different keys per goroutine, this change results in dramatic steady-state speedups. This change does add some overhead for single-CPU and ephemeral maps. I believe that is mostly due to an increase in allocations per call (to pack the map keys and values into interface{} values that may escape into the heap). With better inlining and/or escape analysis, the single-CPU penalty may decline somewhat. There are still two RWMutexes in the package: one for the keys in the global "vars" map, and one for the keys in individual Map variables. Those RWMutexes could also be eliminated, but avoiding excessive allocations when adding new keys would require care. The remaining RWMutexes are only acquired in Do functions, which I believe are not typically on the fast path. updates #17973 updates #18177 name old time/op new time/op delta StringSet 65.9ns ± 8% 55.7ns ± 1% -15.46% (p=0.000 n=8+7) StringSet-6 416ns ±22% 127ns ±19% -69.37% (p=0.000 n=8+8) StringSet-48 309ns ± 8% 94ns ± 3% -69.43% (p=0.001 n=7+7) name old alloc/op new alloc/op delta StringSet 0.00B 16.00B ± 0% +Inf% (p=0.000 n=8+8) StringSet-6 0.00B 16.00B ± 0% +Inf% (p=0.000 n=8+8) StringSet-48 0.00B 16.00B ± 0% +Inf% (p=0.000 n=8+8) name old allocs/op new allocs/op delta StringSet 0.00 1.00 ± 0% +Inf% (p=0.000 n=8+8) StringSet-6 0.00 1.00 ± 0% +Inf% (p=0.000 n=8+8) StringSet-48 0.00 1.00 ± 0% +Inf% (p=0.000 n=8+8) https://perf.golang.org/search?q=upload:20170427.3 name old time/op new time/op delta IntAdd 5.64ns ± 3% 5.58ns ± 1% ~ (p=0.185 n=8+8) IntAdd-6 18.6ns ±32% 21.4ns ±21% ~ (p=0.078 n=8+8) IntAdd-48 19.6ns ±13% 20.6ns ±19% ~ (p=0.702 n=8+8) IntSet 5.50ns ± 1% 5.48ns ± 0% ~ (p=0.222 n=7+8) IntSet-6 18.5ns ±16% 20.4ns ±30% ~ (p=0.314 n=8+8) IntSet-48 19.7ns ±12% 20.4ns ±16% ~ (p=0.522 n=8+8) FloatAdd 14.5ns ± 1% 14.6ns ± 2% ~ (p=0.237 n=7+8) FloatAdd-6 69.9ns ±13% 68.4ns ± 7% ~ (p=0.557 n=7+7) FloatAdd-48 110ns ± 9% 109ns ± 6% ~ (p=0.667 n=8+8) FloatSet 7.62ns ± 3% 7.64ns ± 5% ~ (p=0.939 n=8+8) FloatSet-6 20.7ns ±22% 21.0ns ±23% ~ (p=0.959 n=8+8) FloatSet-48 20.4ns ±24% 20.8ns ±19% ~ (p=0.899 n=8+8) MapSet 88.1ns ±15% 200.9ns ± 7% +128.11% (p=0.000 n=8+8) MapSet-6 453ns ±12% 202ns ± 8% -55.43% (p=0.000 n=8+8) MapSet-48 432ns ±12% 240ns ±15% -44.49% (p=0.000 n=8+8) MapSetDifferent 349ns ± 1% 876ns ± 2% +151.08% (p=0.001 n=6+7) MapSetDifferent-6 1.74µs ±32% 0.25µs ±17% -85.71% (p=0.000 n=8+8) MapSetDifferent-48 1.77µs ±10% 0.14µs ± 2% -91.84% (p=0.000 n=8+8) MapSetString 88.1ns ± 7% 205.3ns ± 5% +132.98% (p=0.001 n=7+7) MapSetString-6 438ns ±30% 205ns ± 9% -53.15% (p=0.000 n=8+8) MapSetString-48 419ns ±14% 241ns ±15% -42.39% (p=0.000 n=8+8) MapAddSame 686ns ± 9% 1010ns ± 5% +47.41% (p=0.000 n=8+8) MapAddSame-6 238ns ±10% 300ns ±11% +26.22% (p=0.000 n=8+8) MapAddSame-48 366ns ± 4% 483ns ± 3% +32.06% (p=0.000 n=8+8) MapAddDifferent 1.96µs ± 4% 3.24µs ± 6% +65.58% (p=0.000 n=8+8) MapAddDifferent-6 553ns ± 3% 948ns ± 8% +71.43% (p=0.000 n=7+8) MapAddDifferent-48 548ns ± 4% 1242ns ±10% +126.81% (p=0.000 n=8+8) MapAddSameSteadyState 31.5ns ± 7% 41.7ns ± 6% +32.61% (p=0.000 n=8+8) MapAddSameSteadyState-6 239ns ± 7% 101ns ±30% -57.53% (p=0.000 n=7+8) MapAddSameSteadyState-48 152ns ± 4% 85ns ±13% -43.84% (p=0.000 n=8+7) MapAddDifferentSteadyState 151ns ± 5% 177ns ± 1% +17.32% (p=0.001 n=8+6) MapAddDifferentSteadyState-6 861ns ±15% 62ns ±23% -92.85% (p=0.000 n=8+8) MapAddDifferentSteadyState-48 617ns ± 2% 20ns ±14% -96.75% (p=0.000 n=8+8) RealworldExpvarUsage 4.33µs ± 4% 4.48µs ± 6% ~ (p=0.336 n=8+7) RealworldExpvarUsage-6 2.12µs ±20% 2.28µs ±10% ~ (p=0.228 n=8+6) RealworldExpvarUsage-48 1.23µs ±19% 1.36µs ±16% ~ (p=0.152 n=7+8) name old alloc/op new alloc/op delta IntAdd 0.00B 0.00B ~ (all equal) IntAdd-6 0.00B 0.00B ~ (all equal) IntAdd-48 0.00B 0.00B ~ (all equal) IntSet 0.00B 0.00B ~ (all equal) IntSet-6 0.00B 0.00B ~ (all equal) IntSet-48 0.00B 0.00B ~ (all equal) FloatAdd 0.00B 0.00B ~ (all equal) FloatAdd-6 0.00B 0.00B ~ (all equal) FloatAdd-48 0.00B 0.00B ~ (all equal) FloatSet 0.00B 0.00B ~ (all equal) FloatSet-6 0.00B 0.00B ~ (all equal) FloatSet-48 0.00B 0.00B ~ (all equal) MapSet 0.00B 48.00B ± 0% +Inf% (p=0.000 n=8+8) MapSet-6 0.00B 48.00B ± 0% +Inf% (p=0.000 n=8+8) MapSet-48 0.00B 48.00B ± 0% +Inf% (p=0.000 n=8+8) MapSetDifferent 0.00B 192.00B ± 0% +Inf% (p=0.000 n=8+8) MapSetDifferent-6 0.00B 192.00B ± 0% +Inf% (p=0.000 n=8+8) MapSetDifferent-48 0.00B 192.00B ± 0% +Inf% (p=0.000 n=8+8) MapSetString 0.00B 48.00B ± 0% +Inf% (p=0.000 n=8+8) MapSetString-6 0.00B 48.00B ± 0% +Inf% (p=0.000 n=8+8) MapSetString-48 0.00B 48.00B ± 0% +Inf% (p=0.000 n=8+8) MapAddSame 456B ± 0% 480B ± 0% +5.26% (p=0.000 n=8+8) MapAddSame-6 456B ± 0% 480B ± 0% +5.26% (p=0.000 n=8+8) MapAddSame-48 456B ± 0% 480B ± 0% +5.26% (p=0.000 n=8+8) MapAddDifferent 672B ± 0% 1088B ± 0% +61.90% (p=0.000 n=8+8) MapAddDifferent-6 672B ± 0% 1088B ± 0% +61.90% (p=0.000 n=8+8) MapAddDifferent-48 672B ± 0% 1088B ± 0% +61.90% (p=0.000 n=8+8) MapAddSameSteadyState 0.00B 0.00B ~ (all equal) MapAddSameSteadyState-6 0.00B 0.00B ~ (all equal) MapAddSameSteadyState-48 0.00B 0.00B ~ (all equal) MapAddDifferentSteadyState 0.00B 0.00B ~ (all equal) MapAddDifferentSteadyState-6 0.00B 0.00B ~ (all equal) MapAddDifferentSteadyState-48 0.00B 0.00B ~ (all equal) RealworldExpvarUsage 0.00B 0.00B ~ (all equal) RealworldExpvarUsage-6 0.00B 0.00B ~ (all equal) RealworldExpvarUsage-48 0.00B 0.00B ~ (all equal) name old allocs/op new allocs/op delta IntAdd 0.00 0.00 ~ (all equal) IntAdd-6 0.00 0.00 ~ (all equal) IntAdd-48 0.00 0.00 ~ (all equal) IntSet 0.00 0.00 ~ (all equal) IntSet-6 0.00 0.00 ~ (all equal) IntSet-48 0.00 0.00 ~ (all equal) FloatAdd 0.00 0.00 ~ (all equal) FloatAdd-6 0.00 0.00 ~ (all equal) FloatAdd-48 0.00 0.00 ~ (all equal) FloatSet 0.00 0.00 ~ (all equal) FloatSet-6 0.00 0.00 ~ (all equal) FloatSet-48 0.00 0.00 ~ (all equal) MapSet 0.00 3.00 ± 0% +Inf% (p=0.000 n=8+8) MapSet-6 0.00 3.00 ± 0% +Inf% (p=0.000 n=8+8) MapSet-48 0.00 3.00 ± 0% +Inf% (p=0.000 n=8+8) MapSetDifferent 0.00 12.00 ± 0% +Inf% (p=0.000 n=8+8) MapSetDifferent-6 0.00 12.00 ± 0% +Inf% (p=0.000 n=8+8) MapSetDifferent-48 0.00 12.00 ± 0% +Inf% (p=0.000 n=8+8) MapSetString 0.00 3.00 ± 0% +Inf% (p=0.000 n=8+8) MapSetString-6 0.00 3.00 ± 0% +Inf% (p=0.000 n=8+8) MapSetString-48 0.00 3.00 ± 0% +Inf% (p=0.000 n=8+8) MapAddSame 6.00 ± 0% 11.00 ± 0% +83.33% (p=0.000 n=8+8) MapAddSame-6 6.00 ± 0% 11.00 ± 0% +83.33% (p=0.000 n=8+8) MapAddSame-48 6.00 ± 0% 11.00 ± 0% +83.33% (p=0.000 n=8+8) MapAddDifferent 14.0 ± 0% 31.0 ± 0% +121.43% (p=0.000 n=8+8) MapAddDifferent-6 14.0 ± 0% 31.0 ± 0% +121.43% (p=0.000 n=8+8) MapAddDifferent-48 14.0 ± 0% 31.0 ± 0% +121.43% (p=0.000 n=8+8) MapAddSameSteadyState 0.00 0.00 ~ (all equal) MapAddSameSteadyState-6 0.00 0.00 ~ (all equal) MapAddSameSteadyState-48 0.00 0.00 ~ (all equal) MapAddDifferentSteadyState 0.00 0.00 ~ (all equal) MapAddDifferentSteadyState-6 0.00 0.00 ~ (all equal) MapAddDifferentSteadyState-48 0.00 0.00 ~ (all equal) RealworldExpvarUsage 0.00 0.00 ~ (all equal) RealworldExpvarUsage-6 0.00 0.00 ~ (all equal) RealworldExpvarUsage-48 0.00 0.00 ~ (all equal) https://perf.golang.org/search?q=upload:20170427.1 Change-Id: I388b2e8a3cadb84fc1418af8acfc27338f799273 Reviewed-on: https://go-review.googlesource.com/41930 Run-TryBot: Bryan Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: -
Brad Fitzpatrick authored
This reverts commit 3d86d45d. Reason for revert: Fixing a different way. See #20008. Change-Id: I6f4382ffdfff83a4504b013ba37100319b2c1aad Reviewed-on: https://go-review.googlesource.com/42138Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org>
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Bryan C. Mills authored
This provides a significant speedup for TypeByExtension and ExtensionsByType when using many CPU cores. updates #17973 updates #18177 name old time/op new time/op delta QEncodeWord 526ns ± 3% 525ns ± 3% ~ (p=0.990 n=15+28) QEncodeWord-6 945ns ± 7% 913ns ±20% ~ (p=0.220 n=14+28) QEncodeWord-48 1.02µs ± 2% 1.00µs ± 6% -2.22% (p=0.036 n=13+27) QDecodeWord 311ns ±18% 323ns ±20% ~ (p=0.107 n=16+28) QDecodeWord-6 595ns ±12% 612ns ±11% ~ (p=0.093 n=15+27) QDecodeWord-48 592ns ± 6% 606ns ± 8% +2.39% (p=0.045 n=16+26) QDecodeHeader 389ns ± 4% 394ns ± 8% ~ (p=0.161 n=12+26) QDecodeHeader-6 685ns ±12% 674ns ±20% ~ (p=0.773 n=14+27) QDecodeHeader-48 658ns ±13% 669ns ±14% ~ (p=0.457 n=16+28) TypeByExtension/.html 77.4ns ±15% 55.5ns ±13% -28.35% (p=0.000 n=8+8) TypeByExtension/.html-6 263ns ± 9% 10ns ±21% -96.29% (p=0.000 n=8+8) TypeByExtension/.html-48 175ns ± 5% 2ns ±16% -98.88% (p=0.000 n=8+8) TypeByExtension/.HTML 113ns ± 6% 97ns ± 6% -14.37% (p=0.000 n=8+8) TypeByExtension/.HTML-6 273ns ± 7% 17ns ± 4% -93.93% (p=0.000 n=7+8) TypeByExtension/.HTML-48 175ns ± 4% 4ns ± 4% -97.73% (p=0.000 n=8+8) TypeByExtension/.unused 116ns ± 4% 90ns ± 4% -22.89% (p=0.001 n=7+7) TypeByExtension/.unused-6 262ns ± 5% 15ns ± 4% -94.17% (p=0.000 n=8+8) TypeByExtension/.unused-48 176ns ± 4% 3ns ±10% -98.10% (p=0.000 n=8+8) ExtensionsByType/text/html 630ns ± 5% 522ns ± 5% -17.19% (p=0.000 n=8+7) ExtensionsByType/text/html-6 314ns ±20% 136ns ± 6% -56.80% (p=0.000 n=8+8) ExtensionsByType/text/html-48 298ns ± 4% 104ns ± 6% -65.06% (p=0.000 n=8+8) ExtensionsByType/text/html;_charset=utf-8 1.12µs ± 3% 1.05µs ± 7% -6.19% (p=0.004 n=8+7) ExtensionsByType/text/html;_charset=utf-8-6 402ns ±11% 307ns ± 4% -23.77% (p=0.000 n=8+8) ExtensionsByType/text/html;_charset=utf-8-48 422ns ± 3% 309ns ± 4% -26.86% (p=0.000 n=8+8) ExtensionsByType/application/octet-stream 810ns ± 2% 747ns ± 5% -7.74% (p=0.000 n=8+8) ExtensionsByType/application/octet-stream-6 289ns ± 9% 185ns ± 8% -36.15% (p=0.000 n=7+8) ExtensionsByType/application/octet-stream-48 267ns ± 6% 94ns ± 2% -64.91% (p=0.000 n=8+7) name old alloc/op new alloc/op delta QEncodeWord 48.0B ± 0% 48.0B ± 0% ~ (all equal) QEncodeWord-6 48.0B ± 0% 48.0B ± 0% ~ (all equal) QEncodeWord-48 48.0B ± 0% 48.0B ± 0% ~ (all equal) QDecodeWord 48.0B ± 0% 48.0B ± 0% ~ (all equal) QDecodeWord-6 48.0B ± 0% 48.0B ± 0% ~ (all equal) QDecodeWord-48 48.0B ± 0% 48.0B ± 0% ~ (all equal) QDecodeHeader 48.0B ± 0% 48.0B ± 0% ~ (all equal) QDecodeHeader-6 48.0B ± 0% 48.0B ± 0% ~ (all equal) QDecodeHeader-48 48.0B ± 0% 48.0B ± 0% ~ (all equal) TypeByExtension/.html 0.00B 0.00B ~ (all equal) TypeByExtension/.html-6 0.00B 0.00B ~ (all equal) TypeByExtension/.html-48 0.00B 0.00B ~ (all equal) TypeByExtension/.HTML 0.00B 0.00B ~ (all equal) TypeByExtension/.HTML-6 0.00B 0.00B ~ (all equal) TypeByExtension/.HTML-48 0.00B 0.00B ~ (all equal) TypeByExtension/.unused 0.00B 0.00B ~ (all equal) TypeByExtension/.unused-6 0.00B 0.00B ~ (all equal) TypeByExtension/.unused-48 0.00B 0.00B ~ (all equal) ExtensionsByType/text/html 192B ± 0% 176B ± 0% -8.33% (p=0.000 n=8+8) ExtensionsByType/text/html-6 192B ± 0% 176B ± 0% -8.33% (p=0.000 n=8+8) ExtensionsByType/text/html-48 192B ± 0% 176B ± 0% -8.33% (p=0.000 n=8+8) ExtensionsByType/text/html;_charset=utf-8 480B ± 0% 464B ± 0% -3.33% (p=0.000 n=8+8) ExtensionsByType/text/html;_charset=utf-8-6 480B ± 0% 464B ± 0% -3.33% (p=0.000 n=8+8) ExtensionsByType/text/html;_charset=utf-8-48 480B ± 0% 464B ± 0% -3.33% (p=0.000 n=8+8) ExtensionsByType/application/octet-stream 160B ± 0% 160B ± 0% ~ (all equal) ExtensionsByType/application/octet-stream-6 160B ± 0% 160B ± 0% ~ (all equal) ExtensionsByType/application/octet-stream-48 160B ± 0% 160B ± 0% ~ (all equal) name old allocs/op new allocs/op delta QEncodeWord 1.00 ± 0% 1.00 ± 0% ~ (all equal) QEncodeWord-6 1.00 ± 0% 1.00 ± 0% ~ (all equal) QEncodeWord-48 1.00 ± 0% 1.00 ± 0% ~ (all equal) QDecodeWord 2.00 ± 0% 2.00 ± 0% ~ (all equal) QDecodeWord-6 2.00 ± 0% 2.00 ± 0% ~ (all equal) QDecodeWord-48 2.00 ± 0% 2.00 ± 0% ~ (all equal) QDecodeHeader 2.00 ± 0% 2.00 ± 0% ~ (all equal) QDecodeHeader-6 2.00 ± 0% 2.00 ± 0% ~ (all equal) QDecodeHeader-48 2.00 ± 0% 2.00 ± 0% ~ (all equal) TypeByExtension/.html 0.00 0.00 ~ (all equal) TypeByExtension/.html-6 0.00 0.00 ~ (all equal) TypeByExtension/.html-48 0.00 0.00 ~ (all equal) TypeByExtension/.HTML 0.00 0.00 ~ (all equal) TypeByExtension/.HTML-6 0.00 0.00 ~ (all equal) TypeByExtension/.HTML-48 0.00 0.00 ~ (all equal) TypeByExtension/.unused 0.00 0.00 ~ (all equal) TypeByExtension/.unused-6 0.00 0.00 ~ (all equal) TypeByExtension/.unused-48 0.00 0.00 ~ (all equal) ExtensionsByType/text/html 3.00 ± 0% 3.00 ± 0% ~ (all equal) ExtensionsByType/text/html-6 3.00 ± 0% 3.00 ± 0% ~ (all equal) ExtensionsByType/text/html-48 3.00 ± 0% 3.00 ± 0% ~ (all equal) ExtensionsByType/text/html;_charset=utf-8 4.00 ± 0% 4.00 ± 0% ~ (all equal) ExtensionsByType/text/html;_charset=utf-8-6 4.00 ± 0% 4.00 ± 0% ~ (all equal) ExtensionsByType/text/html;_charset=utf-8-48 4.00 ± 0% 4.00 ± 0% ~ (all equal) ExtensionsByType/application/octet-stream 2.00 ± 0% 2.00 ± 0% ~ (all equal) ExtensionsByType/application/octet-stream-6 2.00 ± 0% 2.00 ± 0% ~ (all equal) ExtensionsByType/application/octet-stream-48 2.00 ± 0% 2.00 ± 0% ~ (all equal) https://perf.golang.org/search?q=upload:20170427.4 Change-Id: I35438be087ad6eb3d5da9119b395723ea5babaf6 Reviewed-on: https://go-review.googlesource.com/41990 Run-TryBot: Bryan Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Bryan C. Mills authored
This has no measurable impact on performance, but somewhat simplifies the code. updates #18177 name old time/op new time/op delta EndToEnd 54.3µs ±10% 55.7µs ±12% ~ (p=0.505 n=8+8) EndToEnd-6 31.4µs ± 9% 32.7µs ± 6% ~ (p=0.130 n=8+8) EndToEnd-48 25.5µs ±12% 26.4µs ± 6% ~ (p=0.195 n=8+8) EndToEndHTTP 53.7µs ± 8% 51.2µs ±15% ~ (p=0.463 n=7+8) EndToEndHTTP-6 30.9µs ±18% 31.2µs ±14% ~ (p=0.959 n=8+8) EndToEndHTTP-48 24.9µs ±11% 25.7µs ± 6% ~ (p=0.382 n=8+8) EndToEndAsync 23.6µs ± 7% 24.2µs ± 6% ~ (p=0.383 n=7+7) EndToEndAsync-6 21.0µs ±23% 22.0µs ±20% ~ (p=0.574 n=8+8) EndToEndAsync-48 22.8µs ±16% 23.3µs ±13% ~ (p=0.721 n=8+8) EndToEndAsyncHTTP 25.8µs ± 7% 24.7µs ±14% ~ (p=0.161 n=8+8) EndToEndAsyncHTTP-6 22.1µs ±19% 22.6µs ±12% ~ (p=0.645 n=8+8) EndToEndAsyncHTTP-48 22.9µs ±13% 22.1µs ±20% ~ (p=0.574 n=8+8) name old alloc/op new alloc/op delta EndToEnd 320B ± 0% 321B ± 0% ~ (p=1.000 n=8+8) EndToEnd-6 320B ± 0% 321B ± 0% +0.20% (p=0.037 n=8+7) EndToEnd-48 326B ± 0% 326B ± 0% ~ (p=0.124 n=8+8) EndToEndHTTP 320B ± 0% 320B ± 0% ~ (all equal) EndToEndHTTP-6 320B ± 0% 321B ± 0% ~ (p=0.077 n=8+8) EndToEndHTTP-48 324B ± 0% 324B ± 0% ~ (p=1.000 n=8+8) EndToEndAsync 227B ± 0% 227B ± 0% ~ (p=0.154 n=8+7) EndToEndAsync-6 226B ± 0% 226B ± 0% ~ (all equal) EndToEndAsync-48 230B ± 1% 229B ± 1% ~ (p=0.072 n=8+8) EndToEndAsyncHTTP 227B ± 0% 227B ± 0% ~ (all equal) EndToEndAsyncHTTP-6 226B ± 0% 226B ± 0% ~ (p=0.400 n=8+7) EndToEndAsyncHTTP-48 228B ± 0% 228B ± 0% ~ (p=0.949 n=8+6) name old allocs/op new allocs/op delta EndToEnd 9.00 ± 0% 9.00 ± 0% ~ (all equal) EndToEnd-6 9.00 ± 0% 9.00 ± 0% ~ (all equal) EndToEnd-48 9.00 ± 0% 9.00 ± 0% ~ (all equal) EndToEndHTTP 9.00 ± 0% 9.00 ± 0% ~ (all equal) EndToEndHTTP-6 9.00 ± 0% 9.00 ± 0% ~ (all equal) EndToEndHTTP-48 9.00 ± 0% 9.00 ± 0% ~ (all equal) EndToEndAsync 8.00 ± 0% 8.00 ± 0% ~ (all equal) EndToEndAsync-6 8.00 ± 0% 8.00 ± 0% ~ (all equal) EndToEndAsync-48 8.00 ± 0% 8.00 ± 0% ~ (all equal) EndToEndAsyncHTTP 8.00 ± 0% 8.00 ± 0% ~ (all equal) EndToEndAsyncHTTP-6 8.00 ± 0% 8.00 ± 0% ~ (all equal) EndToEndAsyncHTTP-48 8.00 ± 0% 8.00 ± 0% ~ (all equal) https://perf.golang.org/search?q=upload:20170428.2 Change-Id: I8ef7f71a7602302aa78c144327270dfce9211539 Reviewed-on: https://go-review.googlesource.com/42112 Run-TryBot: Bryan Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Bryan C. Mills authored
This provides a moderate speedup for encoding when using many CPU cores. name old time/op new time/op delta CodeEncoder 14.1ms ±10% 13.5ms ± 4% ~ (p=0.867 n=8+7) CodeEncoder-6 2.58ms ± 8% 2.72ms ± 6% ~ (p=0.065 n=8+8) CodeEncoder-48 629µs ± 1% 629µs ± 1% ~ (p=0.867 n=8+7) CodeMarshal 14.9ms ± 5% 14.9ms ± 5% ~ (p=0.721 n=8+8) CodeMarshal-6 3.28ms ±11% 3.24ms ±12% ~ (p=0.798 n=8+8) CodeMarshal-48 739µs ± 1% 745µs ± 2% ~ (p=0.328 n=8+8) CodeDecoder 49.7ms ± 4% 49.2ms ± 4% ~ (p=0.463 n=7+8) CodeDecoder-6 10.1ms ± 8% 10.4ms ± 3% ~ (p=0.232 n=7+8) CodeDecoder-48 2.60ms ± 3% 2.61ms ± 2% ~ (p=1.000 n=8+8) DecoderStream 352ns ± 5% 344ns ± 4% ~ (p=0.077 n=8+8) DecoderStream-6 485ns ± 8% 503ns ± 6% ~ (p=0.123 n=8+8) DecoderStream-48 522ns ± 7% 520ns ± 5% ~ (p=0.959 n=8+8) CodeUnmarshal 52.2ms ± 5% 54.4ms ±18% ~ (p=0.955 n=7+8) CodeUnmarshal-6 12.4ms ± 6% 12.3ms ± 6% ~ (p=0.878 n=8+8) CodeUnmarshal-48 3.46ms ± 7% 3.40ms ± 9% ~ (p=0.442 n=8+8) CodeUnmarshalReuse 48.9ms ± 6% 50.3ms ± 7% ~ (p=0.279 n=8+8) CodeUnmarshalReuse-6 10.3ms ±11% 10.3ms ±10% ~ (p=0.959 n=8+8) CodeUnmarshalReuse-48 2.68ms ± 3% 2.67ms ± 4% ~ (p=0.878 n=8+8) UnmarshalString 476ns ± 7% 474ns ± 7% ~ (p=0.644 n=8+8) UnmarshalString-6 164ns ± 9% 160ns ±10% ~ (p=0.556 n=8+8) UnmarshalString-48 181ns ± 0% 177ns ± 2% -2.36% (p=0.001 n=7+7) UnmarshalFloat64 414ns ± 4% 418ns ± 4% ~ (p=0.382 n=8+8) UnmarshalFloat64-6 147ns ± 9% 143ns ±16% ~ (p=0.457 n=8+8) UnmarshalFloat64-48 176ns ± 2% 174ns ± 2% ~ (p=0.118 n=8+8) UnmarshalInt64 369ns ± 4% 354ns ± 1% -3.85% (p=0.005 n=8+7) UnmarshalInt64-6 132ns ±11% 132ns ±10% ~ (p=0.982 n=8+8) UnmarshalInt64-48 177ns ± 3% 174ns ± 2% -1.84% (p=0.028 n=8+7) Issue10335 540ns ± 5% 535ns ± 0% ~ (p=0.330 n=7+7) Issue10335-6 159ns ± 8% 164ns ± 8% ~ (p=0.246 n=8+8) Issue10335-48 186ns ± 1% 182ns ± 2% -1.89% (p=0.010 n=8+8) Unmapped 1.74µs ± 2% 1.76µs ± 6% ~ (p=0.181 n=6+8) Unmapped-6 414ns ± 5% 402ns ±10% ~ (p=0.244 n=7+8) Unmapped-48 226ns ± 2% 224ns ± 2% ~ (p=0.144 n=7+8) NumberIsValid 20.1ns ± 4% 19.7ns ± 3% ~ (p=0.204 n=8+8) NumberIsValid-6 20.4ns ± 8% 22.2ns ±16% ~ (p=0.129 n=7+8) NumberIsValid-48 23.1ns ±12% 23.8ns ± 8% ~ (p=0.104 n=8+8) NumberIsValidRegexp 629ns ± 5% 622ns ± 0% ~ (p=0.148 n=7+7) NumberIsValidRegexp-6 757ns ± 2% 725ns ±14% ~ (p=0.351 n=8+7) NumberIsValidRegexp-48 757ns ± 2% 723ns ±13% ~ (p=0.521 n=8+8) SkipValue 13.2ms ± 9% 13.3ms ± 1% ~ (p=0.130 n=8+8) SkipValue-6 15.1ms ±10% 14.8ms ± 2% ~ (p=0.397 n=7+8) SkipValue-48 13.9ms ±12% 14.3ms ± 1% ~ (p=0.694 n=8+7) EncoderEncode 433ns ± 4% 410ns ± 3% -5.48% (p=0.001 n=8+8) EncoderEncode-6 221ns ±15% 75ns ± 5% -66.15% (p=0.000 n=7+8) EncoderEncode-48 161ns ± 4% 19ns ± 7% -88.29% (p=0.000 n=7+8) name old speed new speed delta CodeEncoder 139MB/s ±10% 144MB/s ± 4% ~ (p=0.844 n=8+7) CodeEncoder-6 756MB/s ± 8% 714MB/s ± 6% ~ (p=0.065 n=8+8) CodeEncoder-48 3.08GB/s ± 1% 3.09GB/s ± 1% ~ (p=0.867 n=8+7) CodeMarshal 130MB/s ± 5% 130MB/s ± 5% ~ (p=0.721 n=8+8) CodeMarshal-6 594MB/s ±10% 601MB/s ±11% ~ (p=0.798 n=8+8) CodeMarshal-48 2.62GB/s ± 1% 2.60GB/s ± 2% ~ (p=0.328 n=8+8) CodeDecoder 39.0MB/s ± 4% 39.5MB/s ± 4% ~ (p=0.463 n=7+8) CodeDecoder-6 189MB/s ±13% 187MB/s ± 3% ~ (p=0.505 n=8+8) CodeDecoder-48 746MB/s ± 2% 745MB/s ± 2% ~ (p=1.000 n=8+8) CodeUnmarshal 37.2MB/s ± 5% 35.9MB/s ±16% ~ (p=0.955 n=7+8) CodeUnmarshal-6 157MB/s ± 6% 158MB/s ± 6% ~ (p=0.878 n=8+8) CodeUnmarshal-48 561MB/s ± 7% 572MB/s ±10% ~ (p=0.442 n=8+8) SkipValue 141MB/s ±10% 139MB/s ± 1% ~ (p=0.130 n=8+8) SkipValue-6 131MB/s ± 3% 133MB/s ± 2% ~ (p=0.662 n=6+8) SkipValue-48 138MB/s ±11% 132MB/s ± 1% ~ (p=0.281 n=8+7) name old alloc/op new alloc/op delta CodeEncoder 45.9kB ± 0% 45.9kB ± 0% -0.02% (p=0.002 n=7+8) CodeEncoder-6 55.1kB ± 0% 55.1kB ± 0% -0.01% (p=0.002 n=7+8) CodeEncoder-48 110kB ± 0% 110kB ± 0% -0.00% (p=0.030 n=7+8) CodeMarshal 4.59MB ± 0% 4.59MB ± 0% -0.00% (p=0.000 n=8+8) CodeMarshal-6 4.59MB ± 0% 4.59MB ± 0% -0.00% (p=0.000 n=8+8) CodeMarshal-48 4.59MB ± 0% 4.59MB ± 0% -0.00% (p=0.001 n=7+8) CodeDecoder 2.28MB ± 5% 2.21MB ± 0% ~ (p=0.257 n=8+7) CodeDecoder-6 2.43MB ±11% 2.51MB ± 0% ~ (p=0.473 n=8+8) CodeDecoder-48 2.93MB ± 0% 2.93MB ± 0% ~ (p=0.554 n=7+8) DecoderStream 16.0B ± 0% 16.0B ± 0% ~ (all equal) DecoderStream-6 16.0B ± 0% 16.0B ± 0% ~ (all equal) DecoderStream-48 16.0B ± 0% 16.0B ± 0% ~ (all equal) CodeUnmarshal 3.28MB ± 0% 3.28MB ± 0% ~ (p=1.000 n=7+7) CodeUnmarshal-6 3.28MB ± 0% 3.28MB ± 0% ~ (p=0.593 n=8+8) CodeUnmarshal-48 3.28MB ± 0% 3.28MB ± 0% ~ (p=0.670 n=8+8) CodeUnmarshalReuse 1.87MB ± 0% 1.88MB ± 1% +0.48% (p=0.011 n=7+8) CodeUnmarshalReuse-6 1.90MB ± 1% 1.90MB ± 1% ~ (p=0.589 n=8+8) CodeUnmarshalReuse-48 1.96MB ± 0% 1.96MB ± 0% +0.00% (p=0.002 n=7+8) UnmarshalString 304B ± 0% 304B ± 0% ~ (all equal) UnmarshalString-6 304B ± 0% 304B ± 0% ~ (all equal) UnmarshalString-48 304B ± 0% 304B ± 0% ~ (all equal) UnmarshalFloat64 292B ± 0% 292B ± 0% ~ (all equal) UnmarshalFloat64-6 292B ± 0% 292B ± 0% ~ (all equal) UnmarshalFloat64-48 292B ± 0% 292B ± 0% ~ (all equal) UnmarshalInt64 289B ± 0% 289B ± 0% ~ (all equal) UnmarshalInt64-6 289B ± 0% 289B ± 0% ~ (all equal) UnmarshalInt64-48 289B ± 0% 289B ± 0% ~ (all equal) Issue10335 312B ± 0% 312B ± 0% ~ (all equal) Issue10335-6 312B ± 0% 312B ± 0% ~ (all equal) Issue10335-48 312B ± 0% 312B ± 0% ~ (all equal) Unmapped 344B ± 0% 344B ± 0% ~ (all equal) Unmapped-6 344B ± 0% 344B ± 0% ~ (all equal) Unmapped-48 344B ± 0% 344B ± 0% ~ (all equal) NumberIsValid 0.00B 0.00B ~ (all equal) NumberIsValid-6 0.00B 0.00B ~ (all equal) NumberIsValid-48 0.00B 0.00B ~ (all equal) NumberIsValidRegexp 0.00B 0.00B ~ (all equal) NumberIsValidRegexp-6 0.00B 0.00B ~ (all equal) NumberIsValidRegexp-48 0.00B 0.00B ~ (all equal) SkipValue 0.00B 0.00B ~ (all equal) SkipValue-6 0.00B 0.00B ~ (all equal) SkipValue-48 15.0B ±167% 0.0B ~ (p=0.200 n=8+8) EncoderEncode 8.00B ± 0% 0.00B -100.00% (p=0.000 n=8+8) EncoderEncode-6 8.00B ± 0% 0.00B -100.00% (p=0.000 n=8+8) EncoderEncode-48 8.00B ± 0% 0.00B -100.00% (p=0.000 n=8+8) name old allocs/op new allocs/op delta CodeEncoder 1.00 ± 0% 0.00 -100.00% (p=0.000 n=8+8) CodeEncoder-6 1.00 ± 0% 0.00 -100.00% (p=0.000 n=8+8) CodeEncoder-48 1.00 ± 0% 0.00 -100.00% (p=0.000 n=8+8) CodeMarshal 17.0 ± 0% 16.0 ± 0% -5.88% (p=0.000 n=8+8) CodeMarshal-6 17.0 ± 0% 16.0 ± 0% -5.88% (p=0.000 n=8+8) CodeMarshal-48 17.0 ± 0% 16.0 ± 0% -5.88% (p=0.000 n=8+8) CodeDecoder 89.6k ± 0% 89.5k ± 0% ~ (p=0.154 n=8+7) CodeDecoder-6 89.8k ± 0% 89.9k ± 0% ~ (p=0.467 n=8+8) CodeDecoder-48 90.5k ± 0% 90.5k ± 0% ~ (p=0.533 n=8+7) DecoderStream 2.00 ± 0% 2.00 ± 0% ~ (all equal) DecoderStream-6 2.00 ± 0% 2.00 ± 0% ~ (all equal) DecoderStream-48 2.00 ± 0% 2.00 ± 0% ~ (all equal) CodeUnmarshal 105k ± 0% 105k ± 0% ~ (all equal) CodeUnmarshal-6 105k ± 0% 105k ± 0% ~ (all equal) CodeUnmarshal-48 105k ± 0% 105k ± 0% ~ (all equal) CodeUnmarshalReuse 89.5k ± 0% 89.6k ± 0% ~ (p=0.246 n=7+8) CodeUnmarshalReuse-6 89.8k ± 0% 89.8k ± 0% ~ (p=1.000 n=8+8) CodeUnmarshalReuse-48 90.5k ± 0% 90.5k ± 0% ~ (all equal) UnmarshalString 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalString-6 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalString-48 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalFloat64 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalFloat64-6 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalFloat64-48 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalInt64 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalInt64-6 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalInt64-48 2.00 ± 0% 2.00 ± 0% ~ (all equal) Issue10335 3.00 ± 0% 3.00 ± 0% ~ (all equal) Issue10335-6 3.00 ± 0% 3.00 ± 0% ~ (all equal) Issue10335-48 3.00 ± 0% 3.00 ± 0% ~ (all equal) Unmapped 4.00 ± 0% 4.00 ± 0% ~ (all equal) Unmapped-6 4.00 ± 0% 4.00 ± 0% ~ (all equal) Unmapped-48 4.00 ± 0% 4.00 ± 0% ~ (all equal) NumberIsValid 0.00 0.00 ~ (all equal) NumberIsValid-6 0.00 0.00 ~ (all equal) NumberIsValid-48 0.00 0.00 ~ (all equal) NumberIsValidRegexp 0.00 0.00 ~ (all equal) NumberIsValidRegexp-6 0.00 0.00 ~ (all equal) NumberIsValidRegexp-48 0.00 0.00 ~ (all equal) SkipValue 0.00 0.00 ~ (all equal) SkipValue-6 0.00 0.00 ~ (all equal) SkipValue-48 0.00 0.00 ~ (all equal) EncoderEncode 1.00 ± 0% 0.00 -100.00% (p=0.000 n=8+8) EncoderEncode-6 1.00 ± 0% 0.00 -100.00% (p=0.000 n=8+8) EncoderEncode-48 1.00 ± 0% 0.00 -100.00% (p=0.000 n=8+8) https://perf.golang.org/search?q=upload:20170427.2 updates #17973 updates #18177 Change-Id: I5881c7a2bfad1766e6aa3444bb630883e0be467b Reviewed-on: https://go-review.googlesource.com/41931 Run-TryBot: Bryan Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
The code in #20162 contains an embedded interface. It didn't get dowidth'd by the frontend, and during DWARF generation, ngotype asked for a string description of it, which triggered a request for the number of fields in the interface, which triggered a dowidth, which is disallowed in the backend. The other changes in this CL are to support the test. Fixes #20162 Change-Id: I4d0be5bd949c361d4cdc89a8ed28b10977e40cf9 Reviewed-on: https://go-review.googlesource.com/42131 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by:
Matthew Dempsky <mdempsky@google.com> Reviewed-by:
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Michael Hudson-Doyle authored
Change-Id: I08e33b92dd8a22e28ec15aa5753904aa8e1c71f5 Reviewed-on: https://go-review.googlesource.com/42031 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Michael Hudson-Doyle authored
Now that it only takes small values. Change-Id: I08086d392529d8775b470d65afc2475f8d0e7f4a Reviewed-on: https://go-review.googlesource.com/42030 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Michael Hudson-Doyle authored
Change-Id: Id152767c033c12966e9e12ae303b99f38776f919 Reviewed-on: https://go-review.googlesource.com/40987 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Cherry Zhang <cherryyz@google.com> Reviewed-by:
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Josh Bleecher Snyder authored
It is not safe to modify Node.Opt in the backend. Instead of using Node.Opt to store liveness variable indices, use a map. This simplifies the code and makes it much more clearly race-free. There are generally few such variables, so the maps are not a significant source of allocations; this also remove some allocations from putting int32s into interfaces. Because map lookups are more expensive than interface value extraction, reorder valueEffects to do the map lookup last. The only remaining use of Node.Opt is now in esc.go. Passes toolstash-check. Fixes #20144 name old alloc/op new alloc/op delta Template 37.8MB ± 0% 37.9MB ± 0% ~ (p=0.548 n=5+5) Unicode 28.9MB ± 0% 28.9MB ± 0% ~ (p=0.548 n=5+5) GoTypes 110MB ± 0% 110MB ± 0% +0.16% (p=0.008 n=5+5) Compiler 461MB ± 0% 462MB ± 0% +0.08% (p=0.008 n=5+5) SSA 1.11GB ± 0% 1.11GB ± 0% +0.11% (p=0.008 n=5+5) Flate 24.7MB ± 0% 24.7MB ± 0% ~ (p=0.690 n=5+5) GoParser 31.1MB ± 0% 31.1MB ± 0% ~ (p=0.841 n=5+5) Reflect 73.7MB ± 0% 73.8MB ± 0% +0.23% (p=0.008 n=5+5) Tar 25.8MB ± 0% 25.7MB ± 0% ~ (p=0.690 n=5+5) XML 41.2MB ± 0% 41.2MB ± 0% ~ (p=0.841 n=5+5) [Geo mean] 71.9MB 71.9MB +0.06% name old allocs/op new allocs/op delta Template 385k ± 0% 384k ± 0% ~ (p=0.548 n=5+5) Unicode 344k ± 0% 343k ± 1% ~ (p=0.421 n=5+5) GoTypes 1.16M ± 0% 1.16M ± 0% ~ (p=0.690 n=5+5) Compiler 4.43M ± 0% 4.42M ± 0% ~ (p=0.095 n=5+5) SSA 9.86M ± 0% 9.84M ± 0% -0.19% (p=0.008 n=5+5) Flate 238k ± 0% 238k ± 0% ~ (p=1.000 n=5+5) GoParser 321k ± 0% 320k ± 0% ~ (p=0.310 n=5+5) Reflect 956k ± 0% 956k ± 0% ~ (p=1.000 n=5+5) Tar 252k ± 0% 251k ± 0% ~ (p=0.056 n=5+5) XML 402k ± 1% 400k ± 1% -0.57% (p=0.032 n=5+5) [Geo mean] 740k 739k -0.19% Change-Id: Id5916c9def76add272e89c59fe10968f0a6bb01d Reviewed-on: https://go-review.googlesource.com/42135 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Brad Fitzpatrick authored
It used to be simple, and then it got complicated for speed (to reduce allocations, mostly), but that involved a mutex and hurt multi-core performance, contending on the mutex. A change was sent to try to improve that mutex contention in https://go-review.googlesource.com/c/42110/2/src/net/http/server.go but that introduced its own allocations (the string->interface{} boxing for the sync.Map key), which runs counter to the whole point of that statusLine function: to remove allocations. Instead, make the code simple again and not have a mutex. It's a bit slower for the single-core case, but nobody with a single-user HTTP server cares about 50 nanoseconds: name old time/op new time/op delta ResponseStatusLine 37.5ns ± 2% 87.1ns ± 2% +132.42% (p=0.029 n=4+4) ResponseStatusLine-2 63.1ns ± 1% 43.1ns ±12% -31.67% (p=0.029 n=4+4) ResponseStatusLine-4 53.8ns ± 8% 40.2ns ± 2% -25.29% (p=0.029 n=4+4) name old alloc/op new alloc/op delta ResponseStatusLine 0.00B ±NaN% 0.00B ±NaN% ~ (all samples are equal) ResponseStatusLine-2 0.00B ±NaN% 0.00B ±NaN% ~ (all samples are equal) ResponseStatusLine-4 0.00B ±NaN% 0.00B ±NaN% ~ (all samples are equal) name old allocs/op new allocs/op delta ResponseStatusLine 0.00 ±NaN% 0.00 ±NaN% ~ (all samples are equal) ResponseStatusLine-2 0.00 ±NaN% 0.00 ±NaN% ~ (all samples are equal) ResponseStatusLine-4 0.00 ±NaN% 0.00 ±NaN% ~ (all samples are equal) (Note the code could be even simpler with fmt.Fprintf, but that is relatively slow and involves a bunch of allocations getting arguments into interface{} for the call) Change-Id: I1fa119132dbbf97a8e7204ce3e0707d433060da2 Reviewed-on: https://go-review.googlesource.com/42133 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Bryan Mills <bcmills@google.com>
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Daniel Martí authored
Using 'go build -tags "foo,bar"' might seem to work when you wanted -tags "foo bar", since they make up a single tag that doesn't exist and the build is unaffected. Instead, error on any tag that contains a comma. Fixes #18800. Change-Id: I6641e03e2ae121c8878d6301c4311aef97026b73 Reviewed-on: https://go-review.googlesource.com/41951 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by:
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Ian Lance Taylor authored
Fixes #20158 Change-Id: Iefa9a33569eb805f5ab678d17c37787835bc7efa Reviewed-on: https://go-review.googlesource.com/42134 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Justin Nuß authored
The comment for Cmd.Stdout and Cmd.Stderr says that it's safe to set both to the same writer, but it doesn't say that this only works when both writers are comparable. This change updates the comment to explain that using a non-comparable writer may still lead to a race. Fixes #19804 Change-Id: I63b420034666209a2b6fab48b9047c9d07b825e2 Reviewed-on: https://go-review.googlesource.com/42052Reviewed-by:
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Michael Matloob authored
Profile labels added by the user using pprof.Do, if present will be in a *labelMap stored in the unsafe.Pointer 'tag' field of the profile map entry. This change extracts the labels from the tag field and writes them to the profile proto. Change-Id: Ic40fdc58b66e993ca91d5d5effe0e04ffbb5bc46 Reviewed-on: https://go-review.googlesource.com/39613 Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Russ Cox <rsc@golang.org>
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Russ Cox authored
If g1 sets its labels and then they are copied into a profile buffer and then g2 reads the profile buffer and inspects the labels, the race detector must understand that g1's recording of the labels happens before g2's use of the labels. Make that so. Fixes race test failure in CL 39613. Change-Id: Id7cda1c2aac6f8eef49213b5ca414f7154b4acfa Reviewed-on: https://go-review.googlesource.com/42111 Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Michael Matloob <matloob@golang.org>
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Robert Griesemer authored
Fixes #19885. Change-Id: I55420aace1b0f714df2d6460d2d1595f6863dd06 Reviewed-on: https://go-review.googlesource.com/42023Reviewed-by:
Rob Pike <r@golang.org> Reviewed-by:
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Robert Griesemer authored
Fixes #19522. Change-Id: Ib3cf0336e0bf91580d533704ec1a9d45eb0bf62d Reviewed-on: https://go-review.googlesource.com/42020Reviewed-by:
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Josh Bleecher Snyder authored
Updates #20162 Change-Id: Ie289bae0d0be8430e492ac73fd6e6bf36991d4a1 Reviewed-on: https://go-review.googlesource.com/42130Reviewed-by:
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Dmitri Shuralyov authored
More specifically, allow Unicode letters in the directories of GitHub repositories, which can occur and don't have a valid reason to be disallowed by go get. Do so by using a predefined character class, the Unicode character property class \p{L} that describes the Unicode characters that are letters: http://www.regular-expressions.info/unicode.html#category Since it's not possible to create GitHub usernames or repositories containing Unicode letters at this time, those parts of the import path are still restricted to ASCII letters only. Fix name of tested func in t.Errorf messages. Fixes #18660. Change-Id: Ia0ef4742bfd8317d989ef1eb1d7065e382852fe2 Reviewed-on: https://go-review.googlesource.com/41822Reviewed-by:Daniel Martí <mvdan@mvdan.cc> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Bryan C. Mills authored
This simplifies the code a bit and provides a modest speedup for Marshal with many CPUs. updates #17973 updates #18177 name old time/op new time/op delta Marshal 15.8µs ± 1% 15.9µs ± 1% +0.67% (p=0.021 n=8+7) Marshal-6 5.76µs ±11% 5.17µs ± 2% -10.36% (p=0.002 n=8+8) Marshal-48 9.88µs ± 5% 7.31µs ± 6% -26.04% (p=0.000 n=8+8) Unmarshal 44.7µs ± 3% 45.1µs ± 5% ~ (p=0.645 n=8+8) Unmarshal-6 12.1µs ± 7% 11.8µs ± 8% ~ (p=0.442 n=8+8) Unmarshal-48 18.7µs ± 3% 18.2µs ± 4% ~ (p=0.054 n=7+8) name old alloc/op new alloc/op delta Marshal 5.78kB ± 0% 5.78kB ± 0% ~ (all equal) Marshal-6 5.78kB ± 0% 5.78kB ± 0% ~ (all equal) Marshal-48 5.78kB ± 0% 5.78kB ± 0% ~ (all equal) Unmarshal 8.58kB ± 0% 8.58kB ± 0% ~ (all equal) Unmarshal-6 8.58kB ± 0% 8.58kB ± 0% ~ (all equal) Unmarshal-48 8.58kB ± 0% 8.58kB ± 0% ~ (p=1.000 n=8+8) name old allocs/op new allocs/op delta Marshal 23.0 ± 0% 23.0 ± 0% ~ (all equal) Marshal-6 23.0 ± 0% 23.0 ± 0% ~ (all equal) Marshal-48 23.0 ± 0% 23.0 ± 0% ~ (all equal) Unmarshal 189 ± 0% 189 ± 0% ~ (all equal) Unmarshal-6 189 ± 0% 189 ± 0% ~ (all equal) Unmarshal-48 189 ± 0% 189 ± 0% ~ (all equal) https://perf.golang.org/search?q=upload:20170427.5 Change-Id: I4ee95a99540d3e4e47e056fff18357efd2cd340a Reviewed-on: https://go-review.googlesource.com/41991 Run-TryBot: Bryan Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Alberto Donizetti authored
Fixes #20038 Change-Id: Id692790ea406892bbe29090d461356bac28b6150 Reviewed-on: https://go-review.googlesource.com/41333Reviewed-by:
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Kevin Burke authored
This is the same technique used in CL 24466. By adding a little bit of size to the binary, we can remove a function call and gain a lot of performance. A raw array ([128]bool) would be faster, but is also be 128 bytes instead of 16. Running tip on a Mac: name old time/op new time/op delta QuoteMetaAll-4 192ns ±12% 120ns ±11% -37.27% (p=0.000 n=10+10) QuoteMetaNone-4 186ns ± 6% 64ns ± 6% -65.52% (p=0.000 n=10+10) name old speed new speed delta QuoteMetaAll-4 73.2MB/s ±11% 116.6MB/s ±10% +59.21% (p=0.000 n=10+10) QuoteMetaNone-4 139MB/s ± 6% 405MB/s ± 6% +190.74% (p=0.000 n=10+10) Change-Id: I68ce9fe2ef1c28e2274157789b35b0dd6ae3efb5 Reviewed-on: https://go-review.googlesource.com/41495 Run-TryBot: Kevin Burke <kev@inburke.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Nigel Tao authored
Change-Id: I2d3c3c715d857305944cd96c45554a16cb7967e9 Reviewed-on: https://go-review.googlesource.com/42032Reviewed-by:
David Symonds <dsymonds@golang.org>
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Tommy Schaefer authored
Fixes #20133 Change-Id: Ic1a6eb35de1f9ddac9527335eb49bf0b52963b6a Reviewed-on: https://go-review.googlesource.com/41992Reviewed-by:
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Josh Bleecher Snyder authored
Use it to ensure that dowidth is not called from the backend on a type whose size has not yet been calculated. This is an alternative to CL 42016. Change-Id: I8c7b4410ee4c2a68573102f6b9b635f4fdcf392e Reviewed-on: https://go-review.googlesource.com/42018 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
This reverts commit 94d540a4. Reason for revert: prefer something along the lines of CL 42018. Change-Id: I876fe32e98f37d8d725fe55e0fd0ea429c0198e0 Reviewed-on: https://go-review.googlesource.com/42022 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Mikio Hara authored
Change-Id: Ia45f05c63611ade4fe605b389c404953a7afbd1d Reviewed-on: https://go-review.googlesource.com/41837 Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Mikio Hara authored
Change-Id: Id93e78f0c8bef125f124a0a919053208e24a63cd Reviewed-on: https://go-review.googlesource.com/41836 Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Mikio Hara authored
Now it's not very different from syscall_dragonfly.go in golang.org/x/sys/unix repository. Change-Id: I8dfd22e1ebce9dc2cc71ab9ab7f0c92d93b2b762 Reviewed-on: https://go-review.googlesource.com/41835 Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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- 27 Apr, 2017 6 commits
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Josh Bleecher Snyder authored
This CL mainly moves some work to the switch on w.Op, to make a follow-up change simpler and clearer. Updates #19838 Change-Id: I86f3181c380dd60960afcc24224f655276b8956c Reviewed-on: https://go-review.googlesource.com/42010 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
Node.Used was written to from the backend concurrently with reads of Node.Class for the same ONAME Nodes. I do not know why it was not failing consistently under the race detector, but it is a race. This is likely also a problem with Node.HasVal and Node.HasOpt. They will be handled in a separate CL. Fix Used by moving it to gc.Name and making it a separate bool. There was one non-Name use of Used, marking OLABELs as used. That is no longer needed, now that goto and label checking happens early in the front end. Leave the getters and setters in place, to ease changing the representation in the future (or changing to an interface!). Updates #20144 Change-Id: I9bec7c6d33dcb129a4cfa9d338462ea33087f9f7 Reviewed-on: https://go-review.googlesource.com/42015 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Josh Bleecher Snyder authored
Type.Size and Type.Alignment are for the front end: They calculate size and alignment if needed. Type.MustSize and Type.MustAlignment are for the back end: They call Fatal if size and alignment are not already calculated. Most uses are of MustSize and MustAlignment, but that's because the back end is newer, and this API was added to support it. This CL was mostly generated with sed and selective reversion. The only mildly interesting bit is the change of the ssa.Type interface and the supporting ssa dummy types. Follow-up to review feedback on CL 41970. Passes toolstash-check. Change-Id: I0d9b9505e57453dae8fb6a236a07a7a02abd459e Reviewed-on: https://go-review.googlesource.com/42016 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by:
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Josh Bleecher Snyder authored
dowidth is fundamentally unsafe to call from the back end; it will cause data races. Replace all calls to dowidth in the backend with assertions that the width has been calculated. Then fix all the cases in which that was not so, including the cases from #20145. Fixes #20145. Change-Id: Idba3d19d75638851a30ec2ebcdb703c19da3e92b Reviewed-on: https://go-review.googlesource.com/41970 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Michael Hudson-Doyle authored
Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Hana Kim authored
Currently, the following two codes generate the identical dwarf info for type Foo. prog 1) type Foo struct { Bar } prog 2) type Foo struct { Bar Bar } This change adds a go-specific attribute DW_AT_go_embedded_field to annotate each member entry. Its absence or false value indicates the corresponding member is not an embedded field. Update #20037 Change-Id: Ibcbd2714f3e4d97c7b523d7398f29ab2301cc897 Reviewed-on: https://go-review.googlesource.com/41873Reviewed-by:David Chase <drchase@google.com>
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