mirror of
https://github.com/mudler/LocalAI.git
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leilei3167andlocalai-org-maint-bot
d90f703bd9
* fix(xsysinfo): read process VRAM without proc children Kernels without CONFIG_PROC_CHILDREN have no task children file, so ProcessVRAM dropped every DRM reading. When that file is missing, walk child processes from /proc/<pid>/stat ppid links instead. Other read errors still drop the reading. Fixes #12481 Signed-off-by: leilei3167 <imleilei123@gmail.com> * docs(system): describe the proc children fallback Document VRAM reporting on kernels without CONFIG_PROC_CHILDREN. Assisted-by: Codex:GPT-6 --------- Signed-off-by: leilei3167 <imleilei123@gmail.com> Co-authored-by: localai-org-maint-bot <306269227+localai-org-maint-bot@users.noreply.github.com>
134 lines
4.5 KiB
Markdown
134 lines
4.5 KiB
Markdown
+++
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disableToc = false
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title = "System Info and Version"
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weight = 23
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url = "/reference/system-info/"
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LocalAI provides endpoints to inspect the running instance, including available backends, loaded models, and version information.
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## System Information
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- **Method:** `GET`
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- **Endpoint:** `/system`
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Returns available backends and currently loaded models.
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### Response
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| Field | Type | Description |
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|-----------------|----------|-------------------------------------------|
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| `backends` | `array` | List of available backend names (strings) |
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| `loaded_models` | `array` | List of currently loaded models |
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| `loaded_models[].id` | `string` | Model identifier |
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| `loaded_models[].backend` | `string` | Backend serving the model, from its config. Omitted when the model was loaded without one |
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| `loaded_models[].process` | `object` | The backend process serving the model on this host. Omitted when there is no local process (a distributed worker holds the model) or it could not be read |
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| `loaded_models[].process.pid` | `integer` | Process ID |
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| `loaded_models[].process.rss_bytes` | `integer` | Resident host memory, in bytes. Weights offloaded to a GPU are not included |
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| `loaded_models[].process.memory_percent` | `number` | `rss_bytes` as a percentage of host RAM |
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| `loaded_models[].process.cpu_percent` | `number` | Share of the whole host's CPU used since the previous call, 0-100. Omitted on the first call that sees the process, because there is no earlier reading to compare against |
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| `loaded_models[].process.started_at` | `string` | When the process started (RFC 3339) |
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| `loaded_models[].size_vram` | `integer` | Optional DRM-accounted resident device memory, in bytes |
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### Per-model VRAM
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On Linux, `size_vram` reports resident device memory for the local backend
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process and its child processes. LocalAI reads `drm-resident-local*` and
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`drm-resident-vram*` from `/proc` and counts each DRM client once per GPU.
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Host-memory regions are excluded. The reading includes buffers attributed
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to the backend, without separating weights, KV cache, and other allocations.
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See the [kernel DRM accounting specification](https://docs.kernel.org/gpu/drm-usage-stats.html)
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for these counters.
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Kernels without `CONFIG_PROC_CHILDREN` are supported. When `/proc` does not
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provide per-thread `children` files, LocalAI finds child processes through
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the parent PIDs in `/proc/<pid>/stat`.
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The field is omitted when accounting is unavailable or incomplete. This
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includes external and distributed backends, macOS, proprietary NVIDIA
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drivers, primary DRM nodes (`/dev/dri/card*`), missing resident counters,
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and unreadable process information.
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A present value of `0` means the supported counters report zero bytes.
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Treat an absent field as unknown.
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This is a snapshot of driver accounting, not a memory reservation. Shared
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buffers can appear in different clients' counters, and allocations can change
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during collection. Do not treat the sum across models as exclusive physical
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GPU usage. These readings do not replace capacity checks when scheduling work.
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### Usage
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```bash
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curl http://localhost:8080/system
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```
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### Example response
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```json
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{
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"backends": [
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"llama-cpp",
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"huggingface",
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"diffusers",
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"whisper"
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],
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"loaded_models": [
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{
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"id": "my-llama-model",
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"backend": "llama-cpp",
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"size_vram": 5368709120,
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"process": {
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"pid": 48213,
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"rss_bytes": 5368709120,
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"memory_percent": 7.8,
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"cpu_percent": 42.5,
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"started_at": "2026-09-21T09:12:44Z"
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}
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},
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{
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"id": "whisper-1",
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"backend": "whisper"
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}
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]
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}
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```
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`cpu_percent` covers the time since the previous call to this endpoint, so a
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dashboard polling every few seconds gets a current reading. The WebUI's
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**Operate → This machine** page polls it every five seconds.
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---
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## Version
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- **Method:** `GET`
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- **Endpoint:** `/version`
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Returns the LocalAI version and build commit.
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### Response
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| Field | Type | Description |
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|-----------|----------|-------------------------------------------------|
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| `version` | `string` | Version string in the format `version (commit)` |
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### Usage
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```bash
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curl http://localhost:8080/version
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```
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### Example response
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```json
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{
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"version": "2.26.0 (a1b2c3d4)"
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}
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```
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## Error Responses
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| Status Code | Description |
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|-------------|------------------------------|
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| 500 | Internal server error |
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