NVME-FEAT-ARBITRAT(1)             NVMe Manual            NVME-FEAT-ARBITRAT(1)

NAME
       nvme-feat-arbitration - Get and set arbitration feature

SYNOPSIS
       nvme [<global-options>] feat arbitration <device>
                               [--ab=<ab> | -a <ab>] [--lpw=<lpw> | -l <lpw>]
                               [--mpw=<mpw> | -m <mpw>] [--hpw=<hpw> | -h <hpw>]
                               [--sel=<select> | -S <select>] [--save | -s]

DESCRIPTION
       Get and set arbitration feature.

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

       If any of the setting options (--ab, --lpw, --mpw, or --hpw) are
       specified, the command will update the arbitration configuration. If
       none of these options are specified, it will retrieve and display the
       current configuration.

       On success it returns 0, error code otherwise.

OPTIONS
       -a <ab>, --ab=<ab>
           Arbitration Burst. Specifies the maximum number of commands that
           the controller may launch at one time from a submission queue.

       -l <lpw>, --lpw=<lpw>
           Low Priority Weight. Specifies the low priority service weight.

       -m <mpw>, --mpw=<mpw>
           Medium Priority Weight. Specifies the medium priority service
           weight.

       -h <hpw>, --hpw=<hpw>
           High Priority Weight. Specifies the high priority service weight.

       -S <select>, --sel=<select>
           Select (SEL): This field specifies which value of the attributes to
           return in the provided data:

       -s, --save
           Save the attribute so that it persists through all power states and
           resets.

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
       o   Has the program issue a feat arbitration to get the current
           configuration:

               # nvme feat arbitration /dev/nvme0

       o   Has the program issue a feat arbitration to set arbitration burst
           and weights:

               # nvme feat arbitration /dev/nvme0 --ab=2 --lpw=10 --mpw=20 --hpw=30 --save

NVME
       Part of the nvme-user suite.

NVMe                              09/07/2026             NVME-FEAT-ARBITRAT(1)