# tt_ai_clock_limit_mhz

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## Name

### Prometheus Metric Name

```
tt_ai_clock_limit_mhz
```

### Metric Path (tt-telemetry)

Schema:

```
{hostname}/tray{tray}/chip{chip}/tt_ai_clock_limit_mhz
```

Example path:

```
bh-glx-c09u02/tray1/chip2/tt_ai_clock_limit_mhz
```

## Description

The AI clock frequency limit in megahertz. This is a hardware limit representing the highest clock frequency the ASIC can run at. When a workload is running on the chip, the clock speed (`tt_ai_clock_mhz`) will ramp up to this limit value. The current clock speed being at or near this limit is therefore indicative of an active workload.

## Values

**Type:** Unsigned Integer

**Units:** Megahertz (MHz)

**Allowable values:**
A non-negative integer representing the clock frequency limit. For example, `1500` means the AI clock limit is 1500 MHz.

## Related Metrics

|Metric|Description|
|---|---|
|[tt_ai_clock_mhz](tt_ai_clock_mhz.md)|The current AI clock frequency. This is the value that `tt_ai_clock_limit_mhz` provides the upper limit for.|

## Prometheus Labels

|Label Name|Value|
|---|---|
|hostname|The host from which the metric was collected.|
|hall|The datacenter hall where the host is located. Sourced from the Factory System Descriptor (FSD).|
|aisle|The datacenter aisle where the host is located. Sourced from the Factory System Descriptor (FSD).|
|rack|The rack number where the host is located. Sourced from the Factory System Descriptor (FSD).|
|shelf_u|The shelf U position in the rack where the host is located. Sourced from the Factory System Descriptor (FSD).|
|tray|The tray (UBB) that the device is located on.|
|chip|The ASIC location within the tray.|
|unit|The unit of measurement. Always `"MHz"` for this metric.|