Record attributes based on slog.Record

[pellared]

Per open-telemetry#4809 (comment) and open-telemetry#4809 (comment)

$ benchstat old.txt new.txt
goos: linux
goarch: amd64
pkg: go.opentelemetry.io/otel/log/internal
cpu: Intel(R) Core(TM) i9-10885H CPU @ 2.40GHz
                        │    old.txt    │                 new.txt                  │
                        │    sec/op     │     sec/op      vs base                  │
Emit/noop/no_attrs-16      2.641n ±  7%     5.764n ±  4%   +118.23% (p=0.000 n=10)
Emit/noop/3_attrs-16       15.34n ±  7%     17.24n ±  4%    +12.38% (p=0.000 n=10)
Emit/noop/5_attrs-16       18.79n ±  8%     24.24n ±  4%    +28.94% (p=0.000 n=10)
Emit/noop/10_attrs-16      28.48n ± 22%    261.65n ±  4%   +818.55% (p=0.000 n=10)
Emit/noop/40_attrs-16      89.03n ±  7%   1333.00n ±  7%  +1397.16% (p=0.000 n=10)
Emit/writer/no_attrs-16    74.57n ±  8%     89.81n ±  3%    +20.44% (p=0.000 n=10)
Emit/writer/3_attrs-16     209.2n ± 11%     224.5n ±  9%     +7.26% (p=0.035 n=10)
Emit/writer/5_attrs-16     236.1n ±  3%     275.2n ± 13%    +16.54% (p=0.000 n=10)
Emit/writer/10_attrs-16    491.2n ±  7%     715.8n ±  5%    +45.73% (p=0.000 n=10)
Emit/writer/40_attrs-16    1.601µ ± 22%     3.176µ ±  8%    +98.44% (p=0.000 n=10)
Slog/no_attrs-16           173.0n ±  5%     168.7n ± 10%          ~ (p=0.315 n=10)
Slog/3_attrs-16            214.2n ±  9%     209.1n ±  3%     -2.40% (p=0.035 n=10)
Slog/5_attrs-16            268.5n ± 10%     255.7n ±  7%          ~ (p=0.075 n=10)
Slog/10_attrs-16           618.9n ± 11%    1195.5n ±  8%    +93.15% (p=0.000 n=10)
Slog/40_attrs-16           2.321µ ± 14%     6.378µ ±  3%   +174.77% (p=0.000 n=10)
Logr/no_attrs-16          15.185n ± 11%     8.824n ±  5%    -41.89% (p=0.000 n=10)
Logr/3_attrs-16            181.0n ± 10%     154.0n ±  4%    -14.87% (p=0.000 n=10)
Logr/5_attrs-16            264.6n ±  5%     246.0n ±  4%     -6.99% (p=0.000 n=10)
Logr/10_attrs-16           506.0n ±  8%    1146.0n ±  6%   +126.48% (p=0.000 n=10)
Logr/40_attrs-16           1.959µ ±  8%     6.375µ ±  5%   +225.48% (p=0.000 n=10)
geomean                    154.2n           258.5n          +67.68%

                        │    old.txt     │                 new.txt                 │
                        │      B/op      │     B/op      vs base                   │
Emit/noop/no_attrs-16       0.000 ± 0%       0.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/noop/3_attrs-16        0.000 ± 0%       0.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/noop/5_attrs-16        0.000 ± 0%       0.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/noop/10_attrs-16         0.0 ± 0%       320.0 ± 0%         ? (p=0.000 n=10)
Emit/noop/40_attrs-16     0.000Ki ± 0%     2.250Ki ± 0%         ? (p=0.000 n=10)
Emit/writer/no_attrs-16     16.00 ± 0%       16.00 ± 0%         ~ (p=1.000 n=10) ¹
Emit/writer/3_attrs-16      48.00 ± 0%       48.00 ± 0%         ~ (p=1.000 n=10) ¹
Emit/writer/5_attrs-16      48.00 ± 0%       48.00 ± 0%         ~ (p=1.000 n=10) ¹
Emit/writer/10_attrs-16     88.00 ± 0%      408.00 ± 0%  +363.64% (p=0.000 n=10)
Emit/writer/40_attrs-16     328.0 ± 0%      2632.0 ± 0%  +702.44% (p=0.000 n=10)
Slog/no_attrs-16            0.000 ± 0%       0.000 ± 0%         ~ (p=1.000 n=10) ¹
Slog/3_attrs-16             0.000 ± 0%       0.000 ± 0%         ~ (p=1.000 n=10) ¹
Slog/5_attrs-16             0.000 ± 0%       0.000 ± 0%         ~ (p=1.000 n=10) ¹
Slog/10_attrs-16            209.0 ± 0%      1168.0 ± 0%  +458.85% (p=0.000 n=10)
Slog/40_attrs-16          1.400Ki ± 0%     9.312Ki ± 0%  +564.99% (p=0.000 n=10)
Logr/no_attrs-16            0.000 ± 0%       0.000 ± 0%         ~ (p=1.000 n=10) ¹
Logr/3_attrs-16             128.0 ± 0%       128.0 ± 0%         ~ (p=1.000 n=10) ¹
Logr/5_attrs-16             208.0 ± 0%       208.0 ± 0%         ~ (p=1.000 n=10) ¹
Logr/10_attrs-16            418.0 ± 0%      1376.0 ± 0%  +229.19% (p=0.000 n=10)
Logr/40_attrs-16          1.656Ki ± 0%     9.562Ki ± 0%  +477.36% (p=0.000 n=10)
geomean                                ²                 ?                       ²
¹ all samples are equal
² summaries must be >0 to compute geomean

                        │   old.txt    │                new.txt                 │
                        │  allocs/op   │  allocs/op   vs base                   │
Emit/noop/no_attrs-16     0.000 ± 0%      0.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/noop/3_attrs-16      0.000 ± 0%      0.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/noop/5_attrs-16      0.000 ± 0%      0.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/noop/10_attrs-16     0.000 ± 0%      1.000 ± 0%         ? (p=0.000 n=10)
Emit/noop/40_attrs-16     0.000 ± 0%      1.000 ± 0%         ? (p=0.000 n=10)
Emit/writer/no_attrs-16   1.000 ± 0%      1.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/writer/3_attrs-16    4.000 ± 0%      4.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/writer/5_attrs-16    4.000 ± 0%      4.000 ± 0%         ~ (p=1.000 n=10) ¹
Emit/writer/10_attrs-16   7.000 ± 0%      8.000 ± 0%   +14.29% (p=0.000 n=10)
Emit/writer/40_attrs-16   25.00 ± 0%      26.00 ± 0%    +4.00% (p=0.000 n=10)
Slog/no_attrs-16          0.000 ± 0%      0.000 ± 0%         ~ (p=1.000 n=10) ¹
Slog/3_attrs-16           0.000 ± 0%      0.000 ± 0%         ~ (p=1.000 n=10) ¹
Slog/5_attrs-16           0.000 ± 0%      0.000 ± 0%         ~ (p=1.000 n=10) ¹
Slog/10_attrs-16          1.000 ± 0%      5.000 ± 0%  +400.00% (p=0.000 n=10)
Slog/40_attrs-16          1.000 ± 0%      8.000 ± 0%  +700.00% (p=0.000 n=10)
Logr/no_attrs-16          0.000 ± 0%      0.000 ± 0%         ~ (p=1.000 n=10) ¹
Logr/3_attrs-16           4.000 ± 0%      4.000 ± 0%         ~ (p=1.000 n=10) ¹
Logr/5_attrs-16           5.000 ± 0%      5.000 ± 0%         ~ (p=1.000 n=10) ¹
Logr/10_attrs-16          9.000 ± 0%     13.000 ± 0%   +44.44% (p=0.000 n=10)
Logr/40_attrs-16          33.00 ± 0%      40.00 ± 0%   +21.21% (p=0.000 n=10)
geomean                              ²                ?                       ²
¹ all samples are equal
² summaries must be >0 to compute geomean