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diagnostics_channel: add USDT probes#62118

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diagnostics_channel: add USDT probes#62118
bengl wants to merge 1 commit intonodejs:mainfrom
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@bengl bengl commented Mar 5, 2026

Adds USDT probes that are fired for every diagnostics_channel publish.

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@nodejs-github-bot nodejs-github-bot added lib / src Issues and PRs related to general changes in the lib or src directory. needs-ci PRs that need a full CI run. labels Mar 5, 2026

#### Platform support

At `./configure` time, Node.js checks for a working `dtrace` tool and
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We have removed dtrace support long time ago. Wouldn't it require us to include a new suite for testing it on that environment?

Adds USDT probes that are fired for every diagnostics_channel publish.
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