NVME-SOLIDIGM-LATE(1)

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