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   lsmem    ( 1 )

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Имя (Name)

lsmem - list the ranges of available memory with their online status

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Синопсис (Synopsis)

lsmem [options]

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Описание (Description)

The lsmem command lists the ranges of available memory with their online status. The listed memory blocks correspond to the memory block representation in sysfs. The command also shows the memory block size and the amount of memory in online and offline state.

The default output compatible with original implementation from s390-tools, but it's strongly recommended to avoid using default outputs in your scripts. Always explicitly define expected columns by using the --output option together with a columns list in environments where a stable output is required.

The lsmem command lists a new memory range always when the current memory block distinguish from the previous block by some output column. This default behavior is possible to override by the --split option (e.g., lsmem --split=ZONES). The special word "none" may be used to ignore all differences between memory blocks and to create as large as possible continuous ranges. The opposite semantic is --all to list individual memory blocks.

Note that some output columns may provide inaccurate information if a split policy forces lsmem to ignore differences in some attributes. For example if you merge removable and non-removable memory blocks to the one range than all the range will be marked as non-removable on lsmem output.

Not all columns are supported on all systems. If an unsupported column is specified, lsmem prints the column but does not provide any data for it.

Use the --help option to see the columns description.

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Параметры (Options)

-a, --all
           List each individual memory block, instead of combining
           memory blocks with similar attributes.

       -b, --bytes
           Print the SIZE column in bytes rather than in a
           human-readable format.

       -h, --help
           Display help text and exit.

       -J, --json
           Use JSON output format.

       -n, --noheadings
           Do not print a header line.

       -o, --output list
           Specify which output columns to print. Use --help to get a
           list of all supported columns. The default list of columns
           may be extended if list is specified in the format +list
           (e.g., lsmem -o +NODE).

       --output-all
           Output all available columns.

       -P, --pairs
           Produce output in the form of key="value" pairs. All
           potentially unsafe value characters are hex-escaped
           (\x<code>).

       -r, --raw
           Produce output in raw format. All potentially unsafe
           characters are hex-escaped (\x<code>).

       -S, --split list
           Specify which columns (attributes) use to split memory blocks
           to ranges. The supported columns are STATE, REMOVABLE, NODE
           and ZONES, or "none". The other columns are silently ignored.
           For more details see DESCRIPTION above.

       -s, --sysroot directory
           Gather memory data for a Linux instance other than the
           instance from which the lsmem command is issued. The
           specified directory is the system root of the Linux instance
           to be inspected.

       -V, --version
           Display version information and exit.

       --summary[=when]
           This option controls summary lines output. The optional
           argument when can be never, always or only. If the when
           argument is omitted, it defaults to "only". The summary
           output is suppressed for --raw, --pairs and --json.

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