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)
sar(1),
pidstat(1),
mpstat(1),
vmstat(8),
iostat(1),
tapestat(1),
nfsiostat(1)
https://github.com/sysstat/sysstat
http://pagesperso-orange.fr/sebastien.godard/