wolfpld/tracy

Visualize the fiber currently schedule on a thread

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#398 opened on May 26, 2022

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 (6 comments) (2 reactions) (0 assignees)C++ (6,366 stars) (474 forks)batch import
enhancementhelp wanted

Description

When using a lot of fibers you get a lot of fiber swimlane displayed at the same time and it become hard to have a global understanding of when fiber are scheduled compared to each other.

I wish to be able to see which fiber is scheduled when on a particular thread swimlane (especially to see sampled data associated with the corresponding fiber)

Ideally I would imagine something similar to context switch line on top of thread swimlane with the name of the current fiber and name of job it runs.

But in the meantime, is it possible to emulate this feature by instrumenting my app with a markup to make the name of the job appear in the thread swimlane "somehow" ?

Contributor guide

Tech stack
cpp
Domain
performanceobservability
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
C++ programmingunderstanding of Tracy profiler
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Examine the thread swimlane rendering in Tracy's source code, likely in files related to GUI rendering. Check existing code for context switch lines and fiber swimlanes. The feature would require adding a new visualization element to show the currently scheduled fiber on a thread timeline. Look at the issue comments for any additional clarification.