4.13.0.1702
94%

Ran 25 Jul 2025 09:53PM UTC

Jobs 1

Files 190

Run time 1min

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Committed 25 Jul 2025 09:46PM UTC coverage: 94.656% (-0.1%) from 94.796%

Build # 4.13.0.1702

Build Type

push

coveralls.net

Committed by

web-flow

Commit Message

Optimized the Base64Encoder to use hardware acceleration when available (#1176)

* Optimized the Base64Encoder to use hardware acceleration when available

Also replaced Base64Encoder for rfc2047 encoded-word uses with a new
BEncoder class that doesn't need to keep state.

* Make the non-hwaccel Base64Encoder code-path unit testable

* Improved encoder/decoder benchmarks a bit

* Don't cap Base64Encoder's maxLineLength to 76

After some benchmarking, it seems that a maxLineLength of 80 is pretty close
to the maximum throughput that we can get out of the hwaccel code-paths
(at least on a CPU that only supports up to AVX2) without going
significantly over the MIME standard line length.

While maxLineLengths of 96, 112, and 128 are all faster (for example),
they are barely faster.

That said, the Base64.EncodeToUtf8() method is still, obviously, faster.

Run Details

32341 of 34167 relevant lines covered (94.66%)

0.95 hits per line

Uncovered Existing Lines

Lines	Coverage	∆	File
4	99.07	0.0%	D/a/MimeKit/MimeKit/MimeKit/Utils/Rfc2047.cs
15	94.67	-0.05%	D/a/MimeKit/MimeKit/MimeKit/MimePart.cs
18	94.79	0.0%	D/a/MimeKit/MimeKit/MimeKit/Multipart.cs
59	81.27	-18.73%	D/a/MimeKit/MimeKit/MimeKit/Encodings/Base64Encoder.cs

Jobs

ID	Job ID	Ran	Files	Coverage
1	4.13.0.1702.1	25 Jul 2025 09:53PM UTC	190	94.66

jstedfast / MimeKit / 4.13.0.1702
94%

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jstedfast / MimeKit / 4.13.0.1702 94%

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jstedfast / MimeKit / 4.13.0.1702
94%

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