Ignore LACT devices that report zero total VRAM.
Some virtual GPUs on headless VMs report `MemTotalMB == 0` through LACT,
which makes them appear in performance monitoring despite not providing
useful memory data. Skip those entries so only usable GPU devices are
reported.
This makes performance monitoring cleaner on headless VMs with virtual
GPUs that report zero VRAM.
Co-authored-by: David Soušek <david.sousek@intelogy.co.uk>
Add a comprehensive performance monitoring system that collects CPU, memory, swap, load average, network IO, and GPU stats. Provides both a REST API for the UI and a Prometheus /metrics endpoint.
Backend changes:
- New internal/perf package with configurable interval-based stats collection
- GPU monitoring via LACT (Unix socket) and nvidia-smi fallback on Linux
- Ring buffer (internal/ring) for time-series stat storage
- Prometheus /metrics endpoint with all system and GPU metrics
- Moved LogMonitor to internal/logmon package
- New PerformanceConfig for hot-reloadable monitoring settings
- REST /api/performance endpoint replacing SSE streaming
UI changes:
- New Performance page with real-time charts for CPU, memory, GPU, and network
- Reusable PerformanceChart component
- LLAMA_SWAP_URL environment variable support
- Improved capture dialog display
Other:
- Example Grafana dashboard for Prometheus metrics
- monitor-test standalone binary
- Config schema and example updates
fixes#596
knguyen298
cdwaage
David Soušek
Benson Wong