go/api at 8abde68f19ff84c12e8b353e41934999b1bb051c - go

qbit/go

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History

Russ Cox 8abde68f19 math/rand/v2: delete Mitchell/Reeds source These slowdowns are because we are now using PCG instead of the Mitchell/Reeds LFSR for the benchmarks. PCG is in fact a bit slower (but generates statically far better random numbers). goos: linux goarch: amd64 pkg: math/rand/v2 cpu: AMD Ryzen 9 7950X 16-Core Processor │ 01ff938549.amd64 │ afa459a2f0.amd64 │ │ sec/op │ sec/op vs base │ PCG_DXSM-32 1.490n ± 0% 1.488n ± 2% ~ (p=0.408 n=20) SourceUint64-32 1.352n ± 1% 1.450n ± 3% +7.21% (p=0.000 n=20) GlobalInt64-32 2.083n ± 0% 2.067n ± 2% ~ (p=0.223 n=20) GlobalInt64Parallel-32 0.1035n ± 1% 0.1044n ± 2% ~ (p=0.010 n=20) GlobalUint64-32 2.038n ± 1% 2.085n ± 0% +2.28% (p=0.000 n=20) GlobalUint64Parallel-32 0.1006n ± 1% 0.1008n ± 1% ~ (p=0.733 n=20) Int64-32 1.687n ± 2% 1.779n ± 1% +5.48% (p=0.000 n=20) Uint64-32 1.674n ± 2% 1.854n ± 2% +10.69% (p=0.000 n=20) GlobalIntN1000-32 3.135n ± 1% 3.140n ± 3% ~ (p=0.794 n=20) IntN1000-32 2.478n ± 1% 2.496n ± 1% +0.73% (p=0.006 n=20) Int64N1000-32 2.455n ± 1% 2.510n ± 2% +2.22% (p=0.000 n=20) Int64N1e8-32 2.467n ± 2% 2.471n ± 2% ~ (p=0.050 n=20) Int64N1e9-32 2.454n ± 1% 2.488n ± 2% +1.39% (p=0.000 n=20) Int64N2e9-32 2.482n ± 1% 2.478n ± 2% ~ (p=0.066 n=20) Int64N1e18-32 3.349n ± 2% 3.088n ± 1% -7.81% (p=0.000 n=20) Int64N2e18-32 3.537n ± 1% 3.493n ± 1% -1.24% (p=0.002 n=20) Int64N4e18-32 4.917n ± 0% 5.060n ± 2% +2.91% (p=0.000 n=20) Int32N1000-32 2.386n ± 1% 2.620n ± 1% +9.76% (p=0.000 n=20) Int32N1e8-32 2.366n ± 1% 2.652n ± 0% +12.11% (p=0.000 n=20) Int32N1e9-32 2.355n ± 2% 2.644n ± 1% +12.32% (p=0.000 n=20) Int32N2e9-32 2.371n ± 1% 2.619n ± 2% +10.48% (p=0.000 n=20) Float32-32 2.245n ± 2% 2.261n ± 1% ~ (p=0.625 n=20) Float64-32 2.235n ± 1% 2.241n ± 2% ~ (p=0.393 n=20) ExpFloat64-32 3.813n ± 3% 3.716n ± 1% -2.53% (p=0.000 n=20) NormFloat64-32 3.652n ± 2% 3.718n ± 1% +1.79% (p=0.006 n=20) Perm3-32 33.12n ± 3% 34.11n ± 2% ~ (p=0.021 n=20) Perm30-32 205.1n ± 1% 200.6n ± 0% -2.17% (p=0.000 n=20) Perm30ViaShuffle-32 110.8n ± 1% 109.7n ± 1% -0.99% (p=0.002 n=20) ShuffleOverhead-32 113.0n ± 1% 107.2n ± 1% -5.09% (p=0.000 n=20) Concurrent-32 2.100n ± 0% 2.108n ± 6% ~ (p=0.103 n=20) goos: darwin goarch: arm64 pkg: math/rand/v2 │ 01ff938549.arm64 │ afa459a2f0.arm64 │ │ sec/op │ sec/op vs base │ PCG_DXSM-8 2.531n ± 0% 2.531n ± 0% ~ (p=0.763 n=20) SourceUint64-8 2.258n ± 1% 2.531n ± 0% +12.09% (p=0.000 n=20) GlobalInt64-8 2.167n ± 0% 2.177n ± 1% ~ (p=0.213 n=20) GlobalInt64Parallel-8 0.4310n ± 0% 0.4319n ± 0% ~ (p=0.027 n=20) GlobalUint64-8 2.182n ± 1% 2.185n ± 1% ~ (p=0.683 n=20) GlobalUint64Parallel-8 0.4297n ± 0% 0.4295n ± 1% ~ (p=0.941 n=20) Int64-8 2.472n ± 1% 4.104n ± 0% +66.00% (p=0.000 n=20) Uint64-8 2.449n ± 1% 4.080n ± 0% +66.60% (p=0.000 n=20) GlobalIntN1000-8 2.814n ± 2% 2.814n ± 1% ~ (p=0.972 n=20) IntN1000-8 2.998n ± 2% 4.140n ± 0% +38.09% (p=0.000 n=20) Int64N1000-8 2.949n ± 2% 4.139n ± 0% +40.35% (p=0.000 n=20) Int64N1e8-8 2.953n ± 2% 4.140n ± 0% +40.22% (p=0.000 n=20) Int64N1e9-8 2.950n ± 0% 4.139n ± 0% +40.32% (p=0.000 n=20) Int64N2e9-8 2.946n ± 2% 4.140n ± 0% +40.53% (p=0.000 n=20) Int64N1e18-8 3.779n ± 1% 5.273n ± 0% +39.52% (p=0.000 n=20) Int64N2e18-8 4.370n ± 1% 6.059n ± 0% +38.65% (p=0.000 n=20) Int64N4e18-8 6.544n ± 1% 8.803n ± 0% +34.52% (p=0.000 n=20) Int32N1000-8 2.950n ± 0% 4.131n ± 0% +40.06% (p=0.000 n=20) Int32N1e8-8 2.950n ± 2% 4.131n ± 0% +40.03% (p=0.000 n=20) Int32N1e9-8 2.951n ± 2% 4.131n ± 0% +39.99% (p=0.000 n=20) Int32N2e9-8 2.950n ± 2% 4.131n ± 0% +40.03% (p=0.000 n=20) Float32-8 3.441n ± 0% 4.110n ± 0% +19.44% (p=0.000 n=20) Float64-8 3.442n ± 0% 4.104n ± 0% +19.24% (p=0.000 n=20) ExpFloat64-8 4.481n ± 0% 5.338n ± 0% +19.11% (p=0.000 n=20) NormFloat64-8 4.725n ± 0% 5.731n ± 0% +21.28% (p=0.000 n=20) Perm3-8 26.55n ± 0% 26.62n ± 0% +0.28% (p=0.000 n=20) Perm30-8 181.9n ± 0% 194.6n ± 2% +6.98% (p=0.000 n=20) Perm30ViaShuffle-8 142.9n ± 0% 156.4n ± 0% +9.45% (p=0.000 n=20) ShuffleOverhead-8 120.8n ± 2% 125.8n ± 0% +4.10% (p=0.000 n=20) Concurrent-8 2.421n ± 6% 2.654n ± 6% +9.67% (p=0.002 n=20) goos: linux goarch: 386 pkg: math/rand/v2 cpu: AMD Ryzen 9 7950X 16-Core Processor │ 01ff938549.386 │ afa459a2f0.386 │ │ sec/op │ sec/op vs base │ PCG_DXSM-32 7.613n ± 1% 7.793n ± 2% +2.38% (p=0.000 n=20) SourceUint64-32 2.069n ± 0% 7.680n ± 1% +271.19% (p=0.000 n=20) GlobalInt64-32 3.456n ± 1% 3.474n ± 3% ~ (p=0.654 n=20) GlobalInt64Parallel-32 0.3252n ± 0% 0.3253n ± 0% ~ (p=0.952 n=20) GlobalUint64-32 3.573n ± 1% 3.433n ± 2% -3.92% (p=0.000 n=20) GlobalUint64Parallel-32 0.3159n ± 0% 0.3156n ± 0% ~ (p=0.223 n=20) Int64-32 2.562n ± 2% 7.707n ± 1% +200.74% (p=0.000 n=20) Uint64-32 2.592n ± 0% 7.714n ± 1% +197.65% (p=0.000 n=20) GlobalIntN1000-32 6.266n ± 2% 6.236n ± 1% ~ (p=0.039 n=20) IntN1000-32 4.724n ± 2% 10.410n ± 1% +120.39% (p=0.000 n=20) Int64N1000-32 5.490n ± 2% 10.975n ± 2% +99.89% (p=0.000 n=20) Int64N1e8-32 5.513n ± 2% 10.980n ± 1% +99.15% (p=0.000 n=20) Int64N1e9-32 5.476n ± 1% 10.950n ± 0% +99.96% (p=0.000 n=20) Int64N2e9-32 5.501n ± 2% 11.110n ± 1% +101.96% (p=0.000 n=20) Int64N1e18-32 9.043n ± 2% 15.180n ± 2% +67.86% (p=0.000 n=20) Int64N2e18-32 9.601n ± 2% 15.610n ± 1% +62.60% (p=0.000 n=20) Int64N4e18-32 12.00n ± 1% 19.23n ± 2% +60.14% (p=0.000 n=20) Int32N1000-32 4.829n ± 2% 10.345n ± 1% +114.25% (p=0.000 n=20) Int32N1e8-32 4.825n ± 2% 10.330n ± 1% +114.09% (p=0.000 n=20) Int32N1e9-32 4.830n ± 2% 10.350n ± 1% +114.26% (p=0.000 n=20) Int32N2e9-32 4.750n ± 2% 10.345n ± 1% +117.81% (p=0.000 n=20) Float32-32 10.89n ± 4% 13.57n ± 1% +24.61% (p=0.000 n=20) Float64-32 19.60n ± 4% 22.95n ± 4% +17.12% (p=0.000 n=20) ExpFloat64-32 12.96n ± 3% 15.23n ± 2% +17.47% (p=0.000 n=20) NormFloat64-32 7.516n ± 1% 13.780n ± 1% +83.34% (p=0.000 n=20) Perm3-32 36.78n ± 2% 46.62n ± 2% +26.72% (p=0.000 n=20) Perm30-32 238.9n ± 2% 400.7n ± 1% +67.73% (p=0.000 n=20) Perm30ViaShuffle-32 189.7n ± 2% 350.5n ± 1% +84.79% (p=0.000 n=20) ShuffleOverhead-32 159.8n ± 1% 326.0n ± 2% +104.01% (p=0.000 n=20) Concurrent-32 3.286n ± 1% 3.290n ± 0% ~ (p=0.743 n=20) On the other hand, compared to the original "update benchmarks" CL, the cleanups we've made more than compensate for PCG being a bit slower than LFSR, at least on 64-bit x86. ARM64 (Apple M1) is a bit slower: perhaps the 64x64→128 multiply is slower there for some reason. 386 is noticeably slower, but it's also a non-SSA backend. goos: linux goarch: amd64 pkg: math/rand/v2 cpu: AMD Ryzen 9 7950X 16-Core Processor │ 220860f76f.amd64 │ afa459a2f0.amd64 │ │ sec/op │ sec/op vs base │ SourceUint64-32 1.555n ± 1% 1.450n ± 3% -6.78% (p=0.000 n=20) GlobalInt64-32 2.071n ± 1% 2.067n ± 2% ~ (p=0.673 n=20) GlobalInt63Parallel-32 0.1023n ± 1% GlobalInt64Parallel-32 0.1044n ± 2% GlobalUint64-32 5.193n ± 1% 2.085n ± 0% -59.86% (p=0.000 n=20) GlobalUint64Parallel-32 0.2341n ± 0% 0.1008n ± 1% -56.93% (p=0.000 n=20) Int64-32 2.056n ± 2% 1.779n ± 1% -13.47% (p=0.000 n=20) Uint64-32 2.077n ± 2% 1.854n ± 2% -10.74% (p=0.000 n=20) GlobalIntN1000-32 4.077n ± 2% 3.140n ± 3% -22.98% (p=0.000 n=20) IntN1000-32 3.476n ± 2% 2.496n ± 1% -28.19% (p=0.000 n=20) Int64N1000-32 3.059n ± 1% 2.510n ± 2% -17.96% (p=0.000 n=20) Int64N1e8-32 2.942n ± 1% 2.471n ± 2% -15.98% (p=0.000 n=20) Int64N1e9-32 2.932n ± 1% 2.488n ± 2% -15.14% (p=0.000 n=20) Int64N2e9-32 2.925n ± 1% 2.478n ± 2% -15.30% (p=0.000 n=20) Int64N1e18-32 3.116n ± 1% 3.088n ± 1% ~ (p=0.013 n=20) Int64N2e18-32 4.067n ± 1% 3.493n ± 1% -14.11% (p=0.000 n=20) Int64N4e18-32 4.054n ± 1% 5.060n ± 2% +24.80% (p=0.000 n=20) Int32N1000-32 2.951n ± 1% 2.620n ± 1% -11.22% (p=0.000 n=20) Int32N1e8-32 3.102n ± 1% 2.652n ± 0% -14.50% (p=0.000 n=20) Int32N1e9-32 3.535n ± 1% 2.644n ± 1% -25.20% (p=0.000 n=20) Int32N2e9-32 3.514n ± 1% 2.619n ± 2% -25.47% (p=0.000 n=20) Float32-32 2.760n ± 1% 2.261n ± 1% -18.06% (p=0.000 n=20) Float64-32 2.284n ± 1% 2.241n ± 2% ~ (p=0.016 n=20) ExpFloat64-32 3.757n ± 1% 3.716n ± 1% ~ (p=0.034 n=20) NormFloat64-32 3.837n ± 1% 3.718n ± 1% -3.09% (p=0.000 n=20) Perm3-32 35.23n ± 2% 34.11n ± 2% -3.19% (p=0.000 n=20) Perm30-32 208.8n ± 1% 200.6n ± 0% -3.93% (p=0.000 n=20) Perm30ViaShuffle-32 111.7n ± 1% 109.7n ± 1% -1.84% (p=0.000 n=20) ShuffleOverhead-32 101.1n ± 1% 107.2n ± 1% +6.03% (p=0.000 n=20) Concurrent-32 2.108n ± 7% 2.108n ± 6% ~ (p=0.644 n=20) PCG_DXSM-32 1.488n ± 2% goos: darwin goarch: arm64 pkg: math/rand/v2 cpu: Apple M1 │ 220860f76f.arm64 │ afa459a2f0.arm64 │ │ sec/op │ sec/op vs base │ SourceUint64-8 2.316n ± 1% 2.531n ± 0% +9.33% (p=0.000 n=20) GlobalInt64-8 2.183n ± 1% 2.177n ± 1% ~ (p=0.533 n=20) GlobalInt63Parallel-8 0.4331n ± 0% GlobalInt64Parallel-8 0.4319n ± 0% GlobalUint64-8 4.377n ± 2% 2.185n ± 1% -50.07% (p=0.000 n=20) GlobalUint64Parallel-8 0.9237n ± 0% 0.4295n ± 1% -53.50% (p=0.000 n=20) Int64-8 2.538n ± 1% 4.104n ± 0% +61.68% (p=0.000 n=20) Uint64-8 2.604n ± 1% 4.080n ± 0% +56.68% (p=0.000 n=20) GlobalIntN1000-8 3.857n ± 2% 2.814n ± 1% -27.04% (p=0.000 n=20) IntN1000-8 3.822n ± 2% 4.140n ± 0% +8.32% (p=0.000 n=20) Int64N1000-8 3.318n ± 0% 4.139n ± 0% +24.74% (p=0.000 n=20) Int64N1e8-8 3.349n ± 1% 4.140n ± 0% +23.64% (p=0.000 n=20) Int64N1e9-8 3.317n ± 2% 4.139n ± 0% +24.80% (p=0.000 n=20) Int64N2e9-8 3.317n ± 2% 4.140n ± 0% +24.81% (p=0.000 n=20) Int64N1e18-8 3.542n ± 1% 5.273n ± 0% +48.85% (p=0.000 n=20) Int64N2e18-8 5.087n ± 0% 6.059n ± 0% +19.12% (p=0.000 n=20) Int64N4e18-8 5.084n ± 0% 8.803n ± 0% +73.16% (p=0.000 n=20) Int32N1000-8 3.208n ± 2% 4.131n ± 0% +28.79% (p=0.000 n=20) Int32N1e8-8 3.610n ± 1% 4.131n ± 0% +14.43% (p=0.000 n=20) Int32N1e9-8 4.235n ± 0% 4.131n ± 0% -2.44% (p=0.000 n=20) Int32N2e9-8 4.229n ± 1% 4.131n ± 0% -2.33% (p=0.000 n=20) Float32-8 3.468n ± 0% 4.110n ± 0% +18.50% (p=0.000 n=20) Float64-8 3.447n ± 0% 4.104n ± 0% +19.05% (p=0.000 n=20) ExpFloat64-8 4.567n ± 0% 5.338n ± 0% +16.86% (p=0.000 n=20) NormFloat64-8 4.821n ± 0% 5.731n ± 0% +18.89% (p=0.000 n=20) Perm3-8 28.89n ± 0% 26.62n ± 0% -7.84% (p=0.000 n=20) Perm30-8 175.7n ± 0% 194.6n ± 2% +10.76% (p=0.000 n=20) Perm30ViaShuffle-8 153.5n ± 0% 156.4n ± 0% +1.86% (p=0.000 n=20) ShuffleOverhead-8 119.8n ± 1% 125.8n ± 0% +4.97% (p=0.000 n=20) Concurrent-8 2.433n ± 3% 2.654n ± 6% +9.13% (p=0.001 n=20) PCG_DXSM-8 2.531n ± 0% goos: linux goarch: 386 pkg: math/rand/v2 cpu: AMD Ryzen 9 7950X 16-Core Processor │ 220860f76f.386 │ afa459a2f0.386 │ │ sec/op │ sec/op vs base │ SourceUint64-32 2.370n ± 1% 7.680n ± 1% +224.05% (p=0.000 n=20) GlobalInt64-32 3.569n ± 1% 3.474n ± 3% -2.66% (p=0.001 n=20) GlobalInt63Parallel-32 0.3221n ± 1% GlobalInt64Parallel-32 0.3253n ± 0% GlobalUint64-32 8.797n ± 10% 3.433n ± 2% -60.98% (p=0.000 n=20) GlobalUint64Parallel-32 0.6351n ± 0% 0.3156n ± 0% -50.31% (p=0.000 n=20) Int64-32 2.612n ± 2% 7.707n ± 1% +195.04% (p=0.000 n=20) Uint64-32 3.350n ± 1% 7.714n ± 1% +130.25% (p=0.000 n=20) GlobalIntN1000-32 5.892n ± 1% 6.236n ± 1% +5.82% (p=0.000 n=20) IntN1000-32 4.546n ± 1% 10.410n ± 1% +128.97% (p=0.000 n=20) Int64N1000-32 14.59n ± 1% 10.97n ± 2% -24.75% (p=0.000 n=20) Int64N1e8-32 14.76n ± 2% 10.98n ± 1% -25.58% (p=0.000 n=20) Int64N1e9-32 16.57n ± 1% 10.95n ± 0% -33.90% (p=0.000 n=20) Int64N2e9-32 14.54n ± 1% 11.11n ± 1% -23.62% (p=0.000 n=20) Int64N1e18-32 16.14n ± 1% 15.18n ± 2% -5.95% (p=0.000 n=20) Int64N2e18-32 18.10n ± 1% 15.61n ± 1% -13.73% (p=0.000 n=20) Int64N4e18-32 18.65n ± 1% 19.23n ± 2% +3.08% (p=0.000 n=20) Int32N1000-32 3.560n ± 1% 10.345n ± 1% +190.55% (p=0.000 n=20) Int32N1e8-32 3.770n ± 2% 10.330n ± 1% +174.01% (p=0.000 n=20) Int32N1e9-32 4.098n ± 0% 10.350n ± 1% +152.53% (p=0.000 n=20) Int32N2e9-32 4.179n ± 1% 10.345n ± 1% +147.52% (p=0.000 n=20) Float32-32 21.18n ± 4% 13.57n ± 1% -35.93% (p=0.000 n=20) Float64-32 20.60n ± 2% 22.95n ± 4% +11.41% (p=0.000 n=20) ExpFloat64-32 13.07n ± 0% 15.23n ± 2% +16.48% (p=0.000 n=20) NormFloat64-32 7.738n ± 2% 13.780n ± 1% +78.08% (p=0.000 n=20) Perm3-32 36.73n ± 1% 46.62n ± 2% +26.91% (p=0.000 n=20) Perm30-32 211.9n ± 1% 400.7n ± 1% +89.05% (p=0.000 n=20) Perm30ViaShuffle-32 165.2n ± 1% 350.5n ± 1% +112.20% (p=0.000 n=20) ShuffleOverhead-32 133.9n ± 1% 326.0n ± 2% +143.37% (p=0.000 n=20) Concurrent-32 3.287n ± 2% 3.290n ± 0% ~ (p=0.365 n=20) PCG_DXSM-32 7.793n ± 2% For #61716. Change-Id: I4e9c0525b5f84a2ac46f23da9e365495e2d05777 Reviewed-on: https://go-review.googlesource.com/c/go/+/502506 Reviewed-by: Rob Pike <r@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Auto-Submit: Russ Cox <rsc@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>		2023-10-30 17:09:26 +00:00
..
next	math/rand/v2: delete Mitchell/Reeds source	2023-10-30 17:09:26 +00:00
except.txt	crypto/tls: implement Extended Master Secret	2023-05-25 00:13:30 +00:00
go1.1.txt	strconv: quote rune 007F as \x7f, not \u007f	2022-03-31 20:37:15 +00:00
go1.2.txt
go1.3.txt
go1.4.txt
go1.5.txt
go1.6.txt
go1.7.txt
go1.8.txt
go1.9.txt
go1.10.txt
go1.11.txt
go1.12.txt
go1.13.txt
go1.14.txt	cmd/api: add API checks for freebsd/arm64	2023-02-17 20:31:46 +00:00
go1.15.txt
go1.16.txt	cmd/api: track darwin arm64 port	2022-12-02 16:30:41 +00:00
go1.17.txt	cmd/api: add API checks for freebsd/arm64	2023-02-17 20:31:46 +00:00
go1.18.txt	cmd/api: add API checks for freebsd/arm64	2023-02-17 20:31:46 +00:00
go1.19.txt	cmd/api: track deprecations	2022-12-02 16:29:41 +00:00
go1.20.txt	cmd/api: add API checks for freebsd/riscv64	2023-02-17 21:23:32 +00:00
go1.21.txt	go/ast: deprecate Object	2023-08-07 09:39:17 +00:00
go1.txt
README

README

Files in this directory are data for Go's API checker ("go tool api", in src/cmd/api).

Each file is a list of API features, one per line.

go1.txt (and similarly named files) are frozen once a version has been
shipped. Each file adds new lines but does not remove any.

except.txt lists features that may disappear without breaking true
compatibility.

Starting with go1.19.txt, each API feature line must end in "#nnnnn"
giving the GitHub issue number of the proposal issue that accepted
the new API. This helps with our end-of-cycle audit of new APIs.
The same requirement applies to next/* (described below), which will
become a go1.XX.txt for XX >= 19.

The next/ directory contains the only files intended to be mutated.
Each file in that directory contains a list of features that may be added
to the next release of Go. The files in this directory only affect the
warning output from the go api tool. Each file should be named
nnnnn.txt, after the issue number for the accepted proposal.
(The #nnnnn suffix must also appear at the end of each line in the file;
that will be preserved when next/*.txt is concatenated into go1.XX.txt.)