| commit | 64a35f8bf7f1d68b8373c8934a6e7e8f4265c8b0 | [log] [tgz] |
|---|---|---|
| author | Jonathan Amsterdam <jba@google.com> | Fri Oct 23 10:09:03 2020 -0400 |
| committer | Jonathan Amsterdam <jba@google.com> | Mon Oct 26 14:38:17 2020 +0000 |
| tree | 26d22a995e33f99e39d6b353215bbe65f64309cc | |
| parent | a3d833fbb0b5e2321a37bb733173c226a8635f1f [diff] |
internal/godoc: define functions that use internal/godoc/codec Define Package.FastEncode and FastDecodePackage, which use the new codec. Unlike the existing codec, the new one preserves the AST exactly, so we can write a better test for it: we diff the AST before and after a round trip. I had to write something that prints the AST deterministically to make that work; calling cmp.Diff directly took a long time (I ctrl-C'd after 100 seconds), and ast.Fprint isn't deterministic because it iterates over maps (the one in ast.Scope) without sorting the keys. BenchmarkDecoding compares the decoding speed of gob and the new codec against net/http. Here are the results on my cloudtop: BenchmarkDecoding BenchmarkDecoding/gob BenchmarkDecoding/gob-8 6 182617495 ns/op BenchmarkDecoding/fast BenchmarkDecoding/fast-8 27 40283639 ns/op That is, about 40ms vs. 182ms, or a speedup of about 4.5x. I also wrote an encoding benchmark, just to make sure the differences weren't huge. The new codec is faster, but not by as much as decoding. I have yet to hook up the new encoder. That is the next CL. Change-Id: Ia29f1ec1f01e2ef4a8b9cdf9425ce3e3c24d377d Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/264857 Trust: Jonathan Amsterdam <jba@google.com> Run-TryBot: Jonathan Amsterdam <jba@google.com> Reviewed-by: Julie Qiu <julie@golang.org>
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