[bug:critical] Linux: app freezes with 12GB+ RAM usage during normal use
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まだ誰も着手していません。
評価
- 難易度
- 5/5
- 見積もり時間
- 1週間以上
- 初心者へのやさしさ
- 12/100
- issue の種類
- バグ
- 明瞭さ
- 説明が足りない
- 活発さ
- 静か
- 技術スタック
- bun, rust, typescript
調査の方向性
No Linux reproduction exists yet, so start by reproducing the memory growth on Linux and capturing ps output while it happens. The payload points to the #[cfg(target_os = "linux")] branches, the dreamcoder-sidecar child process launched through portable-pty, the Computer Use screenshot gating, and MCP server spawn/reap. Done means a identified leaking process, a fix, and steady-state RSS under 1 GB on Ubuntu, Fedora, or Arch.
索引モデルが issue の本文から書いたものです。
説明
Summary
A user reported in #8 that running DreamCoder on Linux causes RAM usage to spike to 12 GB+, with the app freezing to the point of being unclickable even after configuring swap.
"It was using too much ram like 12gb+ and i work on linux even tho i created a swap memory to run it but it was still freezing and i couldnt click anywhere on the app."
— @Kafkacodes, #8 (comment)
This is a critical bug. A desktop app cannot ship to Linux users in this state.
Severity: critical
- 12 GB RSS for a Tauri + Bun app is at least an order of magnitude beyond expected behaviour. Steady-state on Windows is in the hundreds of MB.
- The freeze is total — the user could not click anywhere. So Linux users have effectively zero usable workflow today.
- This is the first feedback we have from a Linux user trying to contribute. If we don't fix it, we lose every future Linux contributor the same way.
Honest disclosure of investigation state
DreamCoder is currently developed and verified by the maintainer on Windows x64 only. The codebase includes Linux platform branches (#[cfg(target_os = "linux")]) but the maintainer does not run Linux day-to-day, so:
- We do not have a confirmed reproduction yet.
- We cannot bisect this against a "known good" Linux baseline because no such baseline has been established.
- Investigation will need help from Linux users who can run the app and attach diagnostics.
This does not lower the severity. It just means the path to a fix runs through community collaboration rather than a maintainer hot-fix.
Likely suspects (hypotheses, not assertions)
- WebKitGTK behaviour: Tauri uses WebKitGTK on Linux instead of WebView2. Some WebKitGTK versions have runaway-memory patterns under HMR + large bundles in dev mode.
- Sidecar process leak:
dreamcoder-sidecaris a compiled bun bundle. On Linux it's launched as a child viaportable-pty. PTY buffer / session state leaks would balloon over time. - Computer Use mode: screenshot mode allocates large image buffers. It should be off by default on Linux but the gating may not be tight.
- MCP server lifecycle: spawn-but-never-reap.
- Bun runtime memory under long-lived servers — known rough edges.
What we need from Linux users to reproduce
If you hit this, the following information would massively accelerate the fix:
- Distro + kernel (
uname -a,cat /etc/os-release) - Desktop environment + display server (X11 / Wayland)
- WebKitGTK version (
pkg-config --modversion webkit2gtk-4.1or similar) - DreamCoder source: dev mode (
bun run dev) vs an installed binary? Commit SHA or version? - When did the freeze happen: first launch? After loading a project? After an extended session? With Computer Use enabled?
- Snapshot of
ps aux | grep -iE "dreamcoder|sidecar|claude"near the freeze, if obtainable
Acceptance / fix criteria
- Reliable reproduction on at least one mainstream Linux distro (Ubuntu 22.04 / 24.04 LTS, Fedora, Arch).
- Root cause identified: which process is leaking, and why.
- Fix lands and steady-state RSS on Linux is comparable to Windows (under 1 GB during a normal session).
- A Linux user re-runs the build and confirms the fix.
Related
- Reported by @Kafkacodes in #8.
- Surfaces a broader truth about platform coverage; tracking that separately as a docs PR (Platform Support table for README).
- 主要言語
- TypeScript
- スター
- 490
- フォーク
- 47
- 平均マージ
- 10時間 53分
- マージ済み PR（30日）
- 81
環境構築
このプロジェクトには開発コンテナ、Dockerfile、コントリビューションガイドがありません。まず README を読み、一般的な手順ははじめてのコントリビューションガイドを参照してください。
はじめの一歩
- issue を最後まで読み、次にプロジェクトのコントリビューションガイドを読みます。
- 着手することを issue にコメントします — 二人が同じ作業をするのを防げます。
- リポジトリをフォークし、ブランチを切って変更します。
- issue 番号を参照したプルリクエストを送ります。
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