Nathan Skene NathanSkene

claude-cleanup: Kill orphaned Claude Code subagent processes

Claude Code spawns child processes (Bun/Node) for Task tool subagents and MCP servers. When a session ends or crashes, these get reparented to PID 1 (init/launchd) and are never cleaned up. Over hours/days, hundreds accumulate — consuming RAM, causing swap thrashing, and crashing your machine.

This is a workaround until Anthropic fixes the upstream bug.

Related issues: #20369, #22554, #21378, #16508

How it works

FIRST THING FIRST

Update OS

sudo apt-get update && sudo apt-get upgrade

i-Drops file transfer

Log in to hpc via terminal (replace username with your username)

shh username@login.cx1.hpc.ic.ac.uk

Fill in your password when prompted Now we will go to the project folder and find a place we want to dump the files

What do we want to be able to do?

Run a basic nextflow script
Run an R script
Run the R script in parallel so that each one receives a different input argument
Run the process which calls the R script using a docker image
Push our script to github and run it from our github repos

Intro pages about NextFlow

Welcome to Imperial's Neurogenomics lab!

To-do:

Once you have Imperial login ID

Send me your username so I can give you access to the computing cluster and shared project spaces

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