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fxamacker merged 2 commits into from
Dec 12, 2022
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Add preliminary size and benchmark comparisons to README #40

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Add preliminary size and benchmark comparisons
fxamacker Dec 12, 2022
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Update README.md
fxamacker Dec 12, 2022
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31 changes: 31 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,37 @@ Additional content includes a section on canonical encoding, additional Cadence
- Nov 22, 2022 - First team meeting about abridged draft of CCF to present and discuss revision [20221122b](https://github.com/fxamacker/ccf_draft/blob/2594c4859e51715bb9e770cc42542eb31278cfc4/README.md).
- Nov 29, 2022 - Second team meeting about draft of CCF to present and discuss revision [20221129b](https://github.com/fxamacker/ccf_draft/blob/2c9541a90de968413ec34d31dcf2444949dbce1e/ccf_specs.md).

## Preliminary Size and Benchmark Comparisons

Preliminary encoded size comparison of new CCF vs current JSON-based format using `FeesDeducted` example downloaded from flowscan.org show:
- 298 bytes -- JSON
- 119 bytes -- CCF with Cadence type info attached (fully self-describing)
- 18 bytes -- CCF without Cadence type info (partially self-describing)

Benchmark Comparison of JSON vs CCF using a `FeesDeducted` event data.

```
name old time/op new time/op delta
Encode-48 2.87µs ± 0% 1.44µs ± 0% -49.88% (p=0.000 n=20+19)

name old alloc/op new alloc/op delta
Encode-48 1.12kB ± 0% 1.07kB ± 0% -5.24% (p=0.000 n=20+20)

name old allocs/op new allocs/op delta
Encode-48 23.0 ± 0% 13.0 ± 0% -43.48% (p=0.000 n=20+20)

name old time/op new time/op delta
Decode-48 9.81µs ± 1% 2.31µs ± 0% -76.46% (p=0.000 n=20+19)

name old alloc/op new alloc/op delta
Decode-48 6.37kB ± 0% 1.22kB ± 0% -80.87% (p=0.000 n=20+20)

name old allocs/op new allocs/op delta
Decode-48 130 ± 0% 26 ± 0% -80.00% (p=0.000 n=20+20)
```

These benchmark results are preliminary and subject to change.

## Notes

Draft of CCF was originally in README.md and moved to ccf_specs.md on Nov 29, 2022. Given this, the initial commit history of the CCF specification is associated with the README.md file rather than ccf_specs.md.
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