Improve x-subrip detection performance #524
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it helps with mem allocs Before: BenchmarkSrt-8 946042 1089 ns/op 4240 B/op 5 allocs/op After: BenchmarkSrt-8 3235448 368.8 ns/op 64 B/op 2 allocs/op
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May 24, 2024
….4 (#5660) [](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/gabriel-vasile/mimetype](https://togithub.com/gabriel-vasile/mimetype) | `v1.4.3` -> `v1.4.4` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>gabriel-vasile/mimetype (github.com/gabriel-vasile/mimetype)</summary> ### [`v1.4.4`](https://togithub.com/gabriel-vasile/mimetype/releases/tag/v1.4.4) [Compare Source](https://togithub.com/gabriel-vasile/mimetype/compare/v1.4.3...v1.4.4) #### What's Changed ##### Security fixes: Update `golang.org/x/net` to latest. Fixes: [CVE-2023-45288](https://deps.dev/advisory/osv/GO-2024-2687) ##### Performance improvements: - Change tar detection to use checksum instead of legal ranges of values in [https://github.com/gabriel-vasile/mimetype/pull/466](https://togithub.com/gabriel-vasile/mimetype/pull/466) - ftyp: exit asap to prevent mem allocs in [https://github.com/gabriel-vasile/mimetype/pull/517](https://togithub.com/gabriel-vasile/mimetype/pull/517) - Improve x-subrip detection performance in [https://github.com/gabriel-vasile/mimetype/pull/524](https://togithub.com/gabriel-vasile/mimetype/pull/524) - improve performance for text detection in [https://github.com/gabriel-vasile/mimetype/pull/532](https://togithub.com/gabriel-vasile/mimetype/pull/532) - Using io.ReadAll instead of ioutil.ReadAll by [@​phihungtf](https://togithub.com/phihungtf) in [https://github.com/gabriel-vasile/mimetype/pull/525](https://togithub.com/gabriel-vasile/mimetype/pull/525) Benchmarks: ```bash before: BenchmarkText/application/x-ndjson-8 663314 2027 ns/op 4306 B/op 6 allocs/op BenchmarkSliceRand-8 688160 1690 ns/op 728 B/op 75 allocs/op BenchmarkSrt-8 946042 1089 ns/op 4240 B/op 5 allocs/op after: BenchmarkText/application/x-ndjson-8 1930292 678.6 ns/op 160 B/op 4 allocs/op BenchmarkSliceRand-8 1232066 1173 ns/op 160 B/op 4 allocs/op BenchmarkSrt-8 3235448 368.8 ns/op 64 B/op 2 allocs/op ``` #### New Contributors - [@​phihungtf](https://togithub.com/phihungtf) made their first contribution in [https://github.com/gabriel-vasile/mimetype/pull/525](https://togithub.com/gabriel-vasile/mimetype/pull/525) **Full Changelog**: gabriel-vasile/mimetype@v1.4.3...v1.4.4 </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/open-telemetry/opentelemetry-go-contrib). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4zNjguMTAiLCJ1cGRhdGVkSW5WZXIiOiIzNy4zNjguMTAiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbIlNraXAgQ2hhbmdlbG9nIiwiZGVwZW5kZW5jaWVzIl19--> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
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Switch to using
bytes.Cutinstead ofbufio.Scanner. It help with memory allocs.