tt_device_dram_total_megabytes
Name
Prometheus Metric Name
tt_device_dram_total_megabytes
Metric Path (tt-telemetry)
Schema:
{hostname}/tray{tray}/chip{chip}/dram/tt_device_dram_total_megabytes
Example path:
bh-glx-c09u02/tray1/chip2/dram/tt_device_dram_total_megabytes
Description
The total DRAM capacity of the chip, in mebibytes (1 MiB = 1024×1024 B), rounded to the nearest integer. Computed as dram_bank_size * num_dram_channels from the chip’s UMD SocDescriptor. The value is static for the lifetime of the process — it depends only on the chip’s architecture and harvesting configuration.
This metric is the denominator for per-device DRAM utilization (tt_device_dram_used_megabytes / tt_device_dram_total_megabytes).
Values
Type: Unsigned Integer
Units: Megabytes (MB) — reported as mebibytes (1 MiB = 1024×1024 B), rounded to the nearest integer.
Allowable values: A positive integer reflecting the chip’s installed DRAM capacity.
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 |