cifsiostat - Report CIFS statistics.
cifsiostat [ -h ] [ -k | -m ] [ -t ] [ -V ] [ --dec={ 0 | 1 | 2
} ] [ --human ] [ --pretty ] [ interval [ count
] ]
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 continuously.
The CIFS report provides statistics for each mounted CIFS
filesystem. The report shows the following fields:
- Filesystem:
- 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.
- --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.
- --human
- 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.
- --pretty
- 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.
The cifsiostat command takes into account the following
environment variables:
- S_COLORS
- 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.
- S_COLORS_SGR
- 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.
- S_TIME_FORMAT
- 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 format.
/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 kibibytes.
/proc/fs/cifs/Stats contains CIFS statistics.
Written by Ivana Varekova (varekova <at> redhat.com)
Maintained by Sebastien Godard (sysstat <at> orange.fr)