cifsiostat(1) — Linux manual page


CIFSIOSTAT(1)              Linux User's Manual             CIFSIOSTAT(1)

NAME         top

       cifsiostat - Report CIFS statistics.

SYNOPSIS         top

       cifsiostat [ -h ] [ -k | -m ] [ -t ] [ -V ] [ --dec={ 0 | 1 | 2 }
       ] [ --human ] [ --pretty ] [ interval [ count ] ]

DESCRIPTION         top

       The cifsiostat command displays statistics about read and write
       operations on CIFS filesystems.

       The interval parameter specifies the amount of time in seconds
       between each report. The first report contains statistics for the
       time since system startup (boot). Each subsequent report contains
       statistics collected during the interval since the previous
       report.  A report consists of a CIFS header row followed by a
       line of statistics for each CIFS filesystem that is mounted.  The
       count parameter can be specified in conjunction with the interval
       parameter. If the count parameter is specified, the value of
       count determines the number of reports generated at interval
       seconds apart. If the interval parameter is specified without the
       count parameter, the cifsiostat command generates reports

REPORT         top

       The CIFS report provides statistics for each mounted CIFS
       filesystem.  The report shows the following fields:

              This columns shows the mount point of the CIFS filesystem.

       rB/s (rkB/s, rMB/s)
              Indicate the average number of bytes (kilobytes,
              megabytes) read per second.

       wB/s (wkB/s, wMB/s)
              Indicate the average number of bytes (kilobytes,
              megabytes) written per second.

       rop/s  Indicate the number of 'read' operations that were issued
              to the filesystem per second.

       wop/s  Indicate the number of 'write' operations that were issued
              to the filesystem per second.

       fo/s   Indicate the number of open files per second.

       fc/s   Indicate the number of closed files per second.

       fd/s   Indicate the number of deleted files per second.

OPTIONS         top

       --dec={ 0 | 1 | 2 }
              Specify the number of decimal places to use (0 to 2,
              default value is 2).

       -h     This option is equivalent to specifying --human --pretty.

              Print sizes in human readable format (e.g. 1.0k, 1.2M,
              etc.)  The units displayed with this option supersede any
              other default units (e.g.  kilobytes, sectors...)
              associated with the metrics.

       -k     Display statistics in kilobytes per second.

       -m     Display statistics in megabytes per second.

              Make the CIFS report easier to read by a human.

       -t     Print the time for each report displayed. The timestamp
              format may depend on the value of the S_TIME_FORMAT
              environment variable (see below).

       -V     Print version number then exit.

ENVIRONMENT         top

       The cifsiostat command takes into account the following
       environment variables:

              By default statistics are displayed in color when the
              output is connected to a terminal.  Use this variable to
              change the settings. Possible values for this variable are
              never, always or auto (the latter is equivalent to the
              default settings).
              Please note that the color (being red, yellow, or some
              other color) used to display a value is not indicative of
              any kind of issue simply because of the color. It only
              indicates different ranges of values.

              Specify the colors and other attributes used to display
              statistics on the terminal.  Its value is a colon-
              separated list of capabilities that defaults to
              I=32;22:N=34;1:Z=34;22.  Supported capabilities are:

              I=     SGR substring for filesystem names.

              N=     SGR substring for non-zero statistics values.

              Z=     SGR substring for zero values.

              If this variable exists and its value is ISO then the
              current locale will be ignored when printing the date in
              the report header. The cifsiostat command will use the ISO
              8601 format (YYYY-MM-DD) instead.  The timestamp displayed
              with option -t will also be compliant with ISO 8601

BUG         top

       /proc filesystem must be mounted for cifsiostat to work.

       Although cifsiostat speaks of kilobytes (kB), megabytes (MB)...,
       it actually uses kibibytes (kiB), mebibytes (MiB)...  A kibibyte
       is equal to 1024 bytes, and a mebibyte is equal to 1024

FILE         top

       /proc/fs/cifs/Stats contains CIFS statistics.

AUTHORS         top

       Written by Ivana Varekova (varekova <at>
       Maintained by Sebastien Godard (sysstat <at>

SEE ALSO         top

       sar(1), pidstat(1), mpstat(1), vmstat(8), iostat(1), tapestat(1),

COLOPHON         top

       This page is part of the sysstat (sysstat performance monitoring
       tools) project.  Information about the project can be found at 
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       bug report for this manual page, send it to
       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2023-12-17.)  If you discover any rendering
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Linux                          AUGUST 2023                 CIFSIOSTAT(1)

Pages that refer to this page: iostat(1)