pqrs-org/Karabiner-Elements

Ram Usage of karabiner_observer and karabiner_grabber ramping over time

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#3340 opened on Dec 21, 2022

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bughelp wantedstale

Description

I have the issue that my karabiner_observer and karabiner_grabber are increasing in ram usage over time. It doesn't seem to flushed unless I restart the app. I use karabiner 14.10.0 and macos 13.1 on a Macbook Air M1

Contributor guide

Tech stack
cpp
Domain
desktopperformance
Issue type
bug
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.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
C++macOS developmentmemory management
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate the memory allocation patterns in karabiner observer and karabiner grabber processes. Look for objects that are allocated but never freed, possibly due to missing deallocations or reference cycles. Check the source code for components that manage event queues or observers. Consider using Instruments or similar tools to profile memory usage. Look at the issue comments for any hints from maintainers.