[PR #22101] [MERGED] perf: fast-path token comparison in CodeBlock #26484

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GiteaMirror · 2026-04-20T06:31:12-05:00

GiteaMirror commented

2026-04-20 06:31:12 -05:00

📋 Pull Request Information

Original PR: https://github.com/open-webui/open-webui/pull/22101
Author: @Classic298
Created: 3/1/2026
Status: ✅ Merged
Merged: 3/1/2026
Merged by: @tjbck

Base: dev ← Head: perf/codeblock-fastpath

📝 Commits (1)

d642a1d perf: fast-path token comparison in CodeBlock

📊 Changes

1 file changed (+3 additions, -1 deletions)

View changed files

📝 src/lib/components/chat/Messages/CodeBlock.svelte (+3 -1)

📄 Description

During streaming, every token change triggers a full JSON.stringify comparison on the code block token object. Add an O(1) fast-path check on token.text and token.raw — the fields that actually change during streaming — before falling back to the expensive JSON.stringify comparison for infrequent structural changes.

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Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in.

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/open-webui/open-webui/pull/22101 **Author:** [@Classic298](https://github.com/Classic298) **Created:** 3/1/2026 **Status:** ✅ Merged **Merged:** 3/1/2026 **Merged by:** [@tjbck](https://github.com/tjbck) **Base:** `dev` ← **Head:** `perf/codeblock-fastpath` --- ### 📝 Commits (1) - [`d642a1d`](https://github.com/open-webui/open-webui/commit/d642a1df9279190b74cde99b7d998cf2ccea3d4b) perf: fast-path token comparison in CodeBlock ### 📊 Changes **1 file changed** (+3 additions, -1 deletions) <details> <summary>View changed files</summary> 📝 `src/lib/components/chat/Messages/CodeBlock.svelte` (+3 -1) </details> ### 📄 Description During streaming, every token change triggers a full JSON.stringify comparison on the code block token object. Add an O(1) fast-path check on token.text and token.raw — the fields that actually change during streaming — before falling back to the expensive JSON.stringify comparison for infrequent structural changes. ### Contributor License Agreement  By submitting this pull request, I confirm that I have read and fully agree to the [Contributor License Agreement (CLA)](https://github.com/open-webui/open-webui/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT), and I am providing my contributions under its terms. > [!NOTE] > Deleting the CLA section will lead to immediate closure of your PR and it will not be merged in. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

GiteaMirror added the pull-request label 2026-04-20 06:31:12 -05:00

GiteaMirror closed this issue

2026-04-20 06:31:14 -05:00

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Reference: github-starred/open-webui#26484