fix: Apply CPU throttling to secondary CDP session#2092
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OrKoN
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LGTM as a temporary solution but let's fix it upstream and file a task to clean up.
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May 26, 2026
🤖 I have created a release *beep* *boop* --- ## [1.1.0](ChromeDevTools/chrome-devtools-mcp@chrome-devtools-mcp-v1.0.1...chrome-devtools-mcp-v1.1.0) (2026-05-26) ### 🎉 Features * add extraHttpHeaders emulation to emulate tool ([ChromeDevTools#1176](ChromeDevTools#1176)) ([6992106](ChromeDevTools@6992106)) * created cursor plugin.json setting file with release auto versioning ([ChromeDevTools#2091](ChromeDevTools#2091)) ([10c8205](ChromeDevTools@10c8205)) ### 🛠️ Fixes * Apply CPU throttling to secondary CDP session ([ChromeDevTools#2092](ChromeDevTools#2092)) ([3ade962](ChromeDevTools@3ade962)) * **cli:** address pid file creation issues ([ChromeDevTools#2124](ChromeDevTools#2124)) ([1b51a52](ChromeDevTools@1b51a52)) * exit on stdin EOF and SIGTERM/SIGINT/SIGHUP, closing the browser cleanly ([ChromeDevTools#2117](ChromeDevTools#2117)) ([43b934c](ChromeDevTools@43b934c)) * Fix throttling info in performance trace output ([ChromeDevTools#2096](ChromeDevTools#2096)) ([57f32b0](ChromeDevTools@57f32b0)) * make pageId required ([ChromeDevTools#2084](ChromeDevTools#2084)) ([d751693](ChromeDevTools@d751693)), closes [ChromeDevTools#2052](ChromeDevTools#2052) * remove duplicate .mcp.json ([ChromeDevTools#2095](ChromeDevTools#2095)) ([dbf6ba9](ChromeDevTools@dbf6ba9)) * Set viewport after updating timeouts when setting emulation ([ChromeDevTools#2134](ChromeDevTools#2134)) ([0c3ac37](ChromeDevTools@0c3ac37)) * use pinned version for plugins ([ChromeDevTools#2135](ChromeDevTools#2135)) ([8ea5f09](ChromeDevTools@8ea5f09)) * use realpath for MCP roots validation ([ChromeDevTools#2127](ChromeDevTools#2127)) ([176eb69](ChromeDevTools@176eb69)) ### 📄 Documentation * align coding agent examples with Antigravity ([ChromeDevTools#2094](ChromeDevTools#2094)) ([ce31594](ChromeDevTools@ce31594)) * fix installation instructions for VS Code ([ChromeDevTools#2087](ChromeDevTools#2087)) ([9f47df3](ChromeDevTools@9f47df3)) ### 🏗️ Refactor * remove redundant validatePath calls ([ChromeDevTools#2136](ChromeDevTools#2136)) ([521c388](ChromeDevTools@521c388)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).
samiyac
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Jun 5, 2026
This addresses ChromeDevTools#1955 CPU throttling needs to be applied to both the primary puppeteer session and the secondary CDP session from the DevTools universe to have an effect. For network throttling this does not seem to be the case, I can see a slowdown with the current implementation which only applies the network throttling to the primary CDP session. I also had to increase the navigation timeout to prevent timeout errors.
samiyac
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Jun 5, 2026
🤖 I have created a release *beep* *boop* --- ## [1.1.0](ChromeDevTools/chrome-devtools-mcp@chrome-devtools-mcp-v1.0.1...chrome-devtools-mcp-v1.1.0) (2026-05-26) ### 🎉 Features * add extraHttpHeaders emulation to emulate tool ([ChromeDevTools#1176](ChromeDevTools#1176)) ([6992106](ChromeDevTools@6992106)) * created cursor plugin.json setting file with release auto versioning ([ChromeDevTools#2091](ChromeDevTools#2091)) ([10c8205](ChromeDevTools@10c8205)) ### 🛠️ Fixes * Apply CPU throttling to secondary CDP session ([ChromeDevTools#2092](ChromeDevTools#2092)) ([3ade962](ChromeDevTools@3ade962)) * **cli:** address pid file creation issues ([ChromeDevTools#2124](ChromeDevTools#2124)) ([1b51a52](ChromeDevTools@1b51a52)) * exit on stdin EOF and SIGTERM/SIGINT/SIGHUP, closing the browser cleanly ([ChromeDevTools#2117](ChromeDevTools#2117)) ([43b934c](ChromeDevTools@43b934c)) * Fix throttling info in performance trace output ([ChromeDevTools#2096](ChromeDevTools#2096)) ([57f32b0](ChromeDevTools@57f32b0)) * make pageId required ([ChromeDevTools#2084](ChromeDevTools#2084)) ([d751693](ChromeDevTools@d751693)), closes [ChromeDevTools#2052](ChromeDevTools#2052) * remove duplicate .mcp.json ([ChromeDevTools#2095](ChromeDevTools#2095)) ([dbf6ba9](ChromeDevTools@dbf6ba9)) * Set viewport after updating timeouts when setting emulation ([ChromeDevTools#2134](ChromeDevTools#2134)) ([0c3ac37](ChromeDevTools@0c3ac37)) * use pinned version for plugins ([ChromeDevTools#2135](ChromeDevTools#2135)) ([8ea5f09](ChromeDevTools@8ea5f09)) * use realpath for MCP roots validation ([ChromeDevTools#2127](ChromeDevTools#2127)) ([176eb69](ChromeDevTools@176eb69)) ### 📄 Documentation * align coding agent examples with Antigravity ([ChromeDevTools#2094](ChromeDevTools#2094)) ([ce31594](ChromeDevTools@ce31594)) * fix installation instructions for VS Code ([ChromeDevTools#2087](ChromeDevTools#2087)) ([9f47df3](ChromeDevTools@9f47df3)) ### 🏗️ Refactor * remove redundant validatePath calls ([ChromeDevTools#2136](ChromeDevTools#2136)) ([521c388](ChromeDevTools@521c388)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).
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This addresses #1955
CPU throttling needs to be applied to both the primary puppeteer session and the secondary CDP session from the DevTools universe to have an effect.
For network throttling this does not seem to be the case, I can see a slowdown with the current implementation which only applies the network throttling to the primary CDP session.
I also had to increase the navigation timeout to prevent timeout errors.