5051dfdc8c
- modules/t490.nix: TLP power management, CPU throttling (throttled), S3 sleep, remote Nix builders (cluster), fwupd, fprintd, fprintd, Syncthing, Tailscale, Intel VA-API, TrackPoint sensitivity, PipeWire defaults - flake.nix: add nixos-hardware input, import T490 module + nixos-hardware - docs/T490-HARDWARE.md: WiFi variants, graphics, audio, fingerprint, sleep guide - docs/T490-BATTERY.md: TLP config, threshold strategy, real-world battery numbers - docs/T490-OFFLOADING.md: local vs cluster split, remote builder setup - MIGRATION.md: add T490 post-install steps (fwupd, fprint, remote build key) - README.md: reflect new module and docs structure
49 lines
1.6 KiB
Markdown
49 lines
1.6 KiB
Markdown
# T490 Offloading Strategy
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The k3s cluster (n97, n97-mini) handles CPU-bound work so the T490 stays cool and battery lasts longer.
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## Local (T490)
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Interactive, latency-sensitive, or IO-bound:
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- Firefox (web apps, research)
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- Terminal + shell (`ghostty` + `zellij`)
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- Editor (`nvim`)
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- `kubectl` / `k9s` (just API calls)
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- `git` on small repos
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- `nixos-rebuild switch` (builds go remote, CLI runs locally)
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- SSH client
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- Chat (Signal, Discord)
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- Obsidian
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- Image/document viewing
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## Cluster
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CPU-bound, batch, or service workloads:
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- Heavy Nix derivations during `nixos-rebuild` → remote builders
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- Go/Rust/C compilation → ssh/rsync build remotely
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- Docker/OCI image builds → build where they run
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- Package builds (CI) → Forgejo runners on cluster
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- Data processing, ETL
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- Kubeclaw agent operations
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- Long-running services (Forgejo, registry, web services)
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## Remote Nix Builders
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Configured in `modules/t490.nix`:
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```nix
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nix.distributedBuilds = true;
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nix.buildMachines = [
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{ hostName = "n97-mini"; system = "x86_64-linux"; maxJobs = 4; ... }
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{ hostName = "n97"; system = "x86_64-linux"; maxJobs = 4; ... }
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];
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```
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**Setup:** `ssh-keygen -t ed25519 -f /root/.ssh/remote-build` on T490, copy pubkey to each builder.
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**When it works:** `nixos-rebuild switch --flake .#laptop` ships heavy derivations to the cluster. The T490 only builds what must be local (bootloader, activation scripts).
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## Dev Compilation Patterns
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- **sshfs mount:** Edit locally, files live on cluster → build via SSH
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- **rsync + remote build:** Push source, build, pull binary back
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- **nix develop with builders:** `nix develop .#project --builders "ssh://n97-mini"`
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