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Man Pages
NVME-SOLIDIGM-LATE(1) NVMe Manual NVME-SOLIDIGM-LATE(1)

nvme-solidigm-latency-tracking-log - Enable/Retrieve Latency tracking Log

nvme solidigm latency-tracking-log <device> [--enable | -e] [--disable | -d]

[--read | -r] [--write | -w]
[--type <value> | -t <value>]
[--output-format=<fmt> | -o <fmt>]

Enables, disables, or retrieves the Solidigm latency tracking log for the given NVMe device. This log provides detailed information about I/O latencies.

The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).

-e, --enable

Enable latency tracking before retrieving the log.

-d, --disable

Disable latency tracking after retrieving the log.

-r, --read

Retrieve read latency statistics (default if neither --read nor --write is specified).

-w, --write

Retrieve write latency statistics.

-t <value>, --type <value>

Specify the log type to retrieve. Valid values depend on the device’s capabilities.

-o <fmt>, --output-format=<fmt>

Set the reporting format to normal, json, or binary. Only one output format can be used at a time.

•Enable latency tracking and retrieve the read latency log:

# nvme solidigm latency-tracking-log /dev/nvme0 --enable --read

•Retrieve the write latency log in JSON format:

# nvme solidigm latency-tracking-log /dev/nvme0 --write -o json

•Disable latency tracking after retrieving the log:

# nvme solidigm latency-tracking-log /dev/nvme0 --disable

•Specify a log type when retrieving latency statistics:

# nvme solidigm latency-tracking-log /dev/nvme0 --type 1 --read

Part of the nvme-user suite

10/31/2024 NVMe

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