src: improve utf8 string generation performance by anonrig · Pull Request #54873 · nodejs/node

anonrig · 2024-09-10T14:29:07Z

This speeds up Utf8Value across all Node.js codebase. We add a fast path for one byte strings and use the new V8 API (String::ValueView) with simdutf for non-byte strings. Once simdutf supports null termination and invalid character replacement, we can improve the performance more.

cc @nodejs/performance @lemire

Benchmark CI: https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/1637/

github-actions · 2024-09-10T14:52:39Z

Failed to start CI

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https://github.com/nodejs/node/actions/runs/10795045779

jasnell · 2024-09-10T16:01:00Z

CI failures look relevant to this change.

RafaelGSS · 2024-09-10T17:05:02Z

Since the PR is claiming for performance, we should have benchmarks.

codecov · 2024-09-10T17:55:39Z

Codecov Report

Attention: Patch coverage is 84.61538% with 4 lines in your changes missing coverage. Please review.

Project coverage is 88.08%. Comparing base (9db6327) to head (4b28cf1).
Report is 271 commits behind head on main.

Files with missing lines	Patch %	Lines
src/string_bytes.cc	66.66%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@ Coverage Diff @@## main #54873 +/- ##
==========================================
+ Coverage 88.05% 88.08% +0.02% 
==========================================
Files 651 651 Lines 183405 183551 +146 Branches 35822 35867 +45 ==========================================
+ Hits 161499 161676 +177 + Misses 15159 15133 -26 + Partials 6747 6742 -5

Files with missing lines	Coverage Δ
src/util.cc	`87.34% <100.00%> (+0.32%)`	⬆️
src/string_bytes.cc	`68.43% <66.66%> (+4.48%)`	⬆️

... and 50 files with indirect coverage changes

anonrig · 2024-09-10T18:10:21Z

Since the PR is claiming for performance, we should have benchmarks.

I don't know how to have an isolated benchmark for this. Any recommendations @RafaelGSS?

RafaelGSS · 2024-09-10T18:13:26Z

I don't know how to have an isolated benchmark for this.

So, how do you know this PR is improving performance then?

Any recommendations?

I suspect if you measure any public API that makes use of this new branch behind the scenes you should get a feasible result

mcollina

RSLGTM

Co-authored-by: Robert Nagy <ronagy@icloud.com>

nodejs-github-bot · 2024-09-15T01:49:16Z

CI: https://ci.nodejs.org/job/node-test-pull-request/62446/

nodejs-github-bot · 2024-09-15T14:16:54Z

CI: https://ci.nodejs.org/job/node-test-pull-request/62453/

nodejs-github-bot · 2024-09-15T19:36:32Z

CI: https://ci.nodejs.org/job/node-test-pull-request/62460/

anonrig · 2024-09-15T19:37:28Z

@ronag Can you review?

nodejs-github-bot · 2024-09-16T22:14:33Z

CI: https://ci.nodejs.org/job/node-test-pull-request/62487/

Addressed the recommendation. Dismissing.

nodejs-github-bot · 2024-09-17T00:19:48Z

Landed in 8191e1f

nodejs/node#54873

* chore: upgrade Node.js to v24.10.0 * chore: fixup crypto patch * chore: fixup crypto test patch * src: prepare for v8 sandboxing nodejs/node#58376 * esm: fix module.exports export on CJS modules nodejs/node#57366 * chore: fixup lazyload fs patch * esm: Source Phase Imports for WebAssembly nodejs/node#56919 * module: remove --experimental-default-type nodejs/node#56092 * lib,src: refactor assert to load error source from memory nodejs/node#59751 * src: add source location to v8::TaskRunner nodejs/node#54077 * src: remove dependency on wrapper-descriptor-based CppHeap nodejs/node#54077 * src: do not use soon-to-be-deprecated V8 API nodejs/node#53174 * src: stop using deprecated fields of v8::FastApiCallbackOptions nodejs/node#54077 * test: update v8-stats test for V8 12.6 nodejs/node#54077 * esm: unflag --experimental-wasm-modules nodejs/node#57038 * test: adapt assert tests to stack trace changes nodejs/node#58070 * src,test: unregister the isolate after disposal and before freeing nodejs/node#58070 * src: use cppgc to manage ContextifyContext nodejs/node#56522 * src: replace uses of FastApiTypedArray nodejs/node#58070 * module: integrate TypeScript into compile cache nodejs/node#56629 * deps: update ada to 3.2.7 nodejs/node#59336 * src: make minor cleanups in encoding_binding.cc nodejs/node#57448 * src: switch from `Get/SetPrototype` to `Get/SetPrototypeV2` nodejs/node#55453 * src: use non-deprecated Get/SetPrototype methods nodejs/node#59671 * src: simplify string_bytes with views nodejs/node#54876 * src: improve utf8 string generation performance nodejs/node#54873 * src: use non-deprecated Utf8LengthV2() method nodejs/node#58070 * src: use non-deprecated WriteUtf8V2() method nodejs/node#58070 * src: refactor WriteUCS2 and remove flags argument nodejs/node#58163 * src: use String::WriteV2() in TwoByteValue nodejs/node#58164 * node-api: use WriteV2 in napi_get_value_string_utf16 nodejs/node#58165 * node-api: use WriteOneByteV2 in napi_get_value_string_latin1 nodejs/node#58325 * src: migrate WriteOneByte to WriteOneByteV2 nodejs/node#59634 * fs: introduce dirent\.parentPath nodejs/node#50976 * src: avoid copy by using std::views::keys nodejs/node#56080 * chore: fixup patch indices * fix: errant use of context->GetIsolate() * fix: tweak BoringSSL compat patch for new changes * fix: add back missing isolate dtor declaration * fixup! esm: fix module.exports export on CJS modules * cli: remove --no-experimental-fetch flag https://github.com/nodejs/node/pull/52611/files * esm: Source Phase Imports for WebAssembly nodejs/node#56919 * fixup! src: prepare for v8 sandboxing * chore: bump @types/node to v24 * chore: fix const assignment in crypto test * fix: sandbox pointer patch issues * chore: rework source phase import patch * src: add percentage support to --max-old-space-size nodejs/node#59082 * chore: fixup crypto tests * chore: HostImportModuleWithPhaseDynamically todo * fix: cjs esm failures * fix: v8::Object::Wrappable issues - v8/node@b72a615 - v8/node@490bac2 - v8/node@4896a0d * chore: remove deleted specs * src: use v8::ExternalMemoryAccounter nodejs/node#58070 * fs: port SonicBoom module to fs module as FastUtf8Stream nodejs/node#58897 * chore: tweak sandboxed pr patch * test: disable parallel/test-os-checked-function * test: use WHATWG URL instead of url.parse * fix: OPENSSL_secure_zalloc doesn't work in BoringSSL * chore: fix accidental extra line * 7017517: [defer-import-eval] Parse import defer syntax https://chromium-review.googlesource.com/c/v8/v8/+/7017517

nodejs/node#54873 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com>

* chore: upgrade Node.js to v24.10.0 * chore: fixup crypto patch * chore: fixup crypto test patch * src: prepare for v8 sandboxing nodejs/node#58376 * esm: fix module.exports export on CJS modules nodejs/node#57366 * chore: fixup lazyload fs patch * esm: Source Phase Imports for WebAssembly nodejs/node#56919 * module: remove --experimental-default-type nodejs/node#56092 * lib,src: refactor assert to load error source from memory nodejs/node#59751 * src: add source location to v8::TaskRunner nodejs/node#54077 * src: remove dependency on wrapper-descriptor-based CppHeap nodejs/node#54077 * src: do not use soon-to-be-deprecated V8 API nodejs/node#53174 * src: stop using deprecated fields of v8::FastApiCallbackOptions nodejs/node#54077 * test: update v8-stats test for V8 12.6 nodejs/node#54077 * esm: unflag --experimental-wasm-modules nodejs/node#57038 * test: adapt assert tests to stack trace changes nodejs/node#58070 * src,test: unregister the isolate after disposal and before freeing nodejs/node#58070 * src: use cppgc to manage ContextifyContext nodejs/node#56522 * src: replace uses of FastApiTypedArray nodejs/node#58070 * module: integrate TypeScript into compile cache nodejs/node#56629 * deps: update ada to 3.2.7 nodejs/node#59336 * src: make minor cleanups in encoding_binding.cc nodejs/node#57448 * src: switch from `Get/SetPrototype` to `Get/SetPrototypeV2` nodejs/node#55453 * src: use non-deprecated Get/SetPrototype methods nodejs/node#59671 * src: simplify string_bytes with views nodejs/node#54876 * src: improve utf8 string generation performance nodejs/node#54873 * src: use non-deprecated Utf8LengthV2() method nodejs/node#58070 * src: use non-deprecated WriteUtf8V2() method nodejs/node#58070 * src: refactor WriteUCS2 and remove flags argument nodejs/node#58163 * src: use String::WriteV2() in TwoByteValue nodejs/node#58164 * node-api: use WriteV2 in napi_get_value_string_utf16 nodejs/node#58165 * node-api: use WriteOneByteV2 in napi_get_value_string_latin1 nodejs/node#58325 * src: migrate WriteOneByte to WriteOneByteV2 nodejs/node#59634 * fs: introduce dirent\.parentPath nodejs/node#50976 * src: avoid copy by using std::views::keys nodejs/node#56080 * chore: fixup patch indices * fix: errant use of context->GetIsolate() * fix: tweak BoringSSL compat patch for new changes * fix: add back missing isolate dtor declaration * fixup! esm: fix module.exports export on CJS modules * cli: remove --no-experimental-fetch flag https://github.com/nodejs/node/pull/52611/files * esm: Source Phase Imports for WebAssembly nodejs/node#56919 * fixup! src: prepare for v8 sandboxing * chore: bump @types/node to v24 * chore: fix const assignment in crypto test * fix: sandbox pointer patch issues * chore: rework source phase import patch * src: add percentage support to --max-old-space-size nodejs/node#59082 * chore: fixup crypto tests * chore: HostImportModuleWithPhaseDynamically todo * fix: cjs esm failures * fix: v8::Object::Wrappable issues - v8/node@b72a615 - v8/node@490bac2 - v8/node@4896a0d * chore: remove deleted specs * src: use v8::ExternalMemoryAccounter nodejs/node#58070 * fs: port SonicBoom module to fs module as FastUtf8Stream nodejs/node#58897 * chore: tweak sandboxed pr patch * test: disable parallel/test-os-checked-function * test: use WHATWG URL instead of url.parse * fix: OPENSSL_secure_zalloc doesn't work in BoringSSL * chore: fix accidental extra line * 7017517: [defer-import-eval] Parse import defer syntax https://chromium-review.googlesource.com/c/v8/v8/+/7017517

* chore: upgrade Node.js to v24.10.0 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: fixup crypto patch Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: fixup crypto test patch Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: prepare for v8 sandboxing nodejs/node#58376 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * esm: fix module.exports export on CJS modules nodejs/node#57366 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: fixup lazyload fs patch Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * esm: Source Phase Imports for WebAssembly nodejs/node#56919 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * module: remove --experimental-default-type nodejs/node#56092 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * lib,src: refactor assert to load error source from memory nodejs/node#59751 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: add source location to v8::TaskRunner nodejs/node#54077 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: remove dependency on wrapper-descriptor-based CppHeap nodejs/node#54077 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: do not use soon-to-be-deprecated V8 API nodejs/node#53174 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: stop using deprecated fields of v8::FastApiCallbackOptions nodejs/node#54077 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * test: update v8-stats test for V8 12.6 nodejs/node#54077 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * esm: unflag --experimental-wasm-modules nodejs/node#57038 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * test: adapt assert tests to stack trace changes nodejs/node#58070 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src,test: unregister the isolate after disposal and before freeing nodejs/node#58070 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: use cppgc to manage ContextifyContext nodejs/node#56522 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: replace uses of FastApiTypedArray nodejs/node#58070 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * module: integrate TypeScript into compile cache nodejs/node#56629 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * deps: update ada to 3.2.7 nodejs/node#59336 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: make minor cleanups in encoding_binding.cc nodejs/node#57448 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: switch from `Get/SetPrototype` to `Get/SetPrototypeV2` nodejs/node#55453 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: use non-deprecated Get/SetPrototype methods nodejs/node#59671 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: simplify string_bytes with views nodejs/node#54876 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: improve utf8 string generation performance nodejs/node#54873 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: use non-deprecated Utf8LengthV2() method nodejs/node#58070 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: use non-deprecated WriteUtf8V2() method nodejs/node#58070 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: refactor WriteUCS2 and remove flags argument nodejs/node#58163 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: use String::WriteV2() in TwoByteValue nodejs/node#58164 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * node-api: use WriteV2 in napi_get_value_string_utf16 nodejs/node#58165 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * node-api: use WriteOneByteV2 in napi_get_value_string_latin1 nodejs/node#58325 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: migrate WriteOneByte to WriteOneByteV2 nodejs/node#59634 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fs: introduce dirent\.parentPath nodejs/node#50976 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: avoid copy by using std::views::keys nodejs/node#56080 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: fixup patch indices Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fix: errant use of context->GetIsolate() Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fix: tweak BoringSSL compat patch for new changes Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fix: add back missing isolate dtor declaration Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fixup! esm: fix module.exports export on CJS modules Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * cli: remove --no-experimental-fetch flag https://github.com/nodejs/node/pull/52611/files Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * esm: Source Phase Imports for WebAssembly nodejs/node#56919 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fixup! src: prepare for v8 sandboxing Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: bump @types/node to v24 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: fix const assignment in crypto test Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fix: sandbox pointer patch issues Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: rework source phase import patch Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: add percentage support to --max-old-space-size nodejs/node#59082 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: fixup crypto tests Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: HostImportModuleWithPhaseDynamically todo Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fix: cjs esm failures Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fix: v8::Object::Wrappable issues - v8/node@b72a615 - v8/node@490bac2 - v8/node@4896a0d Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: remove deleted specs Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * src: use v8::ExternalMemoryAccounter nodejs/node#58070 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fs: port SonicBoom module to fs module as FastUtf8Stream nodejs/node#58897 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: tweak sandboxed pr patch Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * test: disable parallel/test-os-checked-function Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * test: use WHATWG URL instead of url.parse Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * fix: OPENSSL_secure_zalloc doesn't work in BoringSSL Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * chore: fix accidental extra line Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> * 7017517: [defer-import-eval] Parse import defer syntax https://chromium-review.googlesource.com/c/v8/v8/+/7017517 Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com> --------- Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com> Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com>

* chore: upgrade Node.js to v24.10.0 * chore: fixup crypto patch * chore: fixup crypto test patch * src: prepare for v8 sandboxing nodejs/node#58376 * esm: fix module.exports export on CJS modules nodejs/node#57366 * chore: fixup lazyload fs patch * esm: Source Phase Imports for WebAssembly nodejs/node#56919 * module: remove --experimental-default-type nodejs/node#56092 * lib,src: refactor assert to load error source from memory nodejs/node#59751 * src: add source location to v8::TaskRunner nodejs/node#54077 * src: remove dependency on wrapper-descriptor-based CppHeap nodejs/node#54077 * src: do not use soon-to-be-deprecated V8 API nodejs/node#53174 * src: stop using deprecated fields of v8::FastApiCallbackOptions nodejs/node#54077 * test: update v8-stats test for V8 12.6 nodejs/node#54077 * esm: unflag --experimental-wasm-modules nodejs/node#57038 * test: adapt assert tests to stack trace changes nodejs/node#58070 * src,test: unregister the isolate after disposal and before freeing nodejs/node#58070 * src: use cppgc to manage ContextifyContext nodejs/node#56522 * src: replace uses of FastApiTypedArray nodejs/node#58070 * module: integrate TypeScript into compile cache nodejs/node#56629 * deps: update ada to 3.2.7 nodejs/node#59336 * src: make minor cleanups in encoding_binding.cc nodejs/node#57448 * src: switch from `Get/SetPrototype` to `Get/SetPrototypeV2` nodejs/node#55453 * src: use non-deprecated Get/SetPrototype methods nodejs/node#59671 * src: simplify string_bytes with views nodejs/node#54876 * src: improve utf8 string generation performance nodejs/node#54873 * src: use non-deprecated Utf8LengthV2() method nodejs/node#58070 * src: use non-deprecated WriteUtf8V2() method nodejs/node#58070 * src: refactor WriteUCS2 and remove flags argument nodejs/node#58163 * src: use String::WriteV2() in TwoByteValue nodejs/node#58164 * node-api: use WriteV2 in napi_get_value_string_utf16 nodejs/node#58165 * node-api: use WriteOneByteV2 in napi_get_value_string_latin1 nodejs/node#58325 * src: migrate WriteOneByte to WriteOneByteV2 nodejs/node#59634 * fs: introduce dirent\.parentPath nodejs/node#50976 * src: avoid copy by using std::views::keys nodejs/node#56080 * chore: fixup patch indices * fix: errant use of context->GetIsolate() * fix: tweak BoringSSL compat patch for new changes * fix: add back missing isolate dtor declaration * fixup! esm: fix module.exports export on CJS modules * cli: remove --no-experimental-fetch flag https://github.com/nodejs/node/pull/52611/files * esm: Source Phase Imports for WebAssembly nodejs/node#56919 * fixup! src: prepare for v8 sandboxing * chore: bump @types/node to v24 * chore: fix const assignment in crypto test * fix: sandbox pointer patch issues * chore: rework source phase import patch * src: add percentage support to --max-old-space-size nodejs/node#59082 * chore: fixup crypto tests * chore: HostImportModuleWithPhaseDynamically todo * fix: cjs esm failures * fix: v8::Object::Wrappable issues - v8/node@b72a615 - v8/node@490bac2 - v8/node@4896a0d * chore: remove deleted specs * src: use v8::ExternalMemoryAccounter nodejs/node#58070 * fs: port SonicBoom module to fs module as FastUtf8Stream nodejs/node#58897 * chore: tweak sandboxed pr patch * test: disable parallel/test-os-checked-function * test: use WHATWG URL instead of url.parse * fix: OPENSSL_secure_zalloc doesn't work in BoringSSL * chore: fix accidental extra line * 7017517: [defer-import-eval] Parse import defer syntax https://chromium-review.googlesource.com/c/v8/v8/+/7017517

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Co-authored-by: Robert Nagy <ronagy@icloud.com>

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