Format Support: concatenated output from many calls to jstack · jlfwong/speedscope#173

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説明

Poor man's profiling of a JVM:

$ for i in `seq 1 300`;do jstack $(pgrep java) > $i.jstack;sleep 1;done;zip profile.zip *.jstack;rm *.jstack

...and then uploading profile.zip. I'm tired of opening up traffic for profiling to production and/or building lots of tooling around it. jstack (and shell) is always availalable.

コントリビューターガイド

技術スタック: typescript
領域: performancedata
Issue 種別: feature
難度: 3
推定時間: 1-3 hours
活動状況: stale
明確さ: clear
前提条件: TypeScriptspeedscope import architectureJVM stack trace format
初心者向け度: 60
調査方針: First, examine speedscope's existing import system in the src/import/ directory to understand how other profile formats (e.g., Chrome trace) are parsed. Then, implement a new importer that reads a zip file containing multiple jstack outputs, extracts each file, parses the thread dumps, and concatenates them into a single profile. Test the new format by creating sample jstack outputs and verifying the viewer displays them correctly. Check issue comments for any additional maintainer guidance.