nvme-solidigm-latency-tracking-log(1)

# nvme-solidigm-latency-tracking-log(1) Manual Page

## NAME

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

## SYNOPSIS

    nvme [<global-options>] solidigm latency-tracking-log <device>
                            [--enable | -e]
                            [--disable | -d]
                            [--read | -r]
                            [--write | -w]
                            [--type <value> | -t <value>]

## DESCRIPTION

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).

## OPTIONS

-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.

## GLOBAL OPTIONS

The following options are defined at the top-level `nvme` command and are available to this subcommand:

--dry-run

  Print the command that would be executed, but do not actually execute it.

--no-ioctl-probing

  Disable probing for 64-bit IOCTL support.

--no-retries

  Disable retry logic on transient errors.

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

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

--output-format-version=<version>

  Select the output format version. Version 1 uses the original field naming, while version 2 (default) provides more consistent and script-friendly field names.

--timeout=<ms>

  Set the timeout for the command in milliseconds.

-v
--verbose

  Increase the level of detail in the output. May be specified multiple times to further increase verbosity.

These options can also be set as machine-wide defaults in nvme-cli.conf(5). A command-line flag always overrides the file.

## EXAMPLES

- 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

## NVME

Part of the nvme-user suite