microsoft / microsoft/vscode-remote-release
High "gpu-process" CPU time when waiting for "Enter passphrase for ssh key"
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Description
Type: Performance Issue
- Open a remote SSH session via the "Remote - SSH" plugin to a host with a SSH keypair protected by a passphrase
- Observe the prompt "Enter passphrase for ssh key" in the top input box
High CPU usage is seen, leading to quick device battery drain; ~25% CPU usage is seen in Process Explorer by "code > gpu-process", as reported on Linux x86-64 Ubuntu 24.04.
Extension version: 0.120.0
VS Code version: Code 1.104.2 (e3a5acfb517a443235981655413d566533107e92, 2025-09-24T11:21:37.073Z)
OS version: Linux x64 6.14.0-32-generic snap
Modes:
Remote OS version: Linux x64 6.14.0-29-generic
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No source files, tests, or entry points are named. First reproduce the Remote - SSH passphrase prompt on Linux with the reported VS Code and extension versions, then trace the prompt and gpu-process behavior. Done means the passphrase prompt no longer causes sustained high CPU usage or rapid battery drain.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- linux, vscode
- Domain
- devtools, networking, performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100