mirror of
https://github.com/freebsd/freebsd-src
synced 2024-11-05 18:22:52 +00:00
143 lines
4.3 KiB
Groff
143 lines
4.3 KiB
Groff
.\" Copyright (c) 1989, 1990, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.Dd December 28, 2023
|
|
.Dt NFSSTAT 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm nfsstat
|
|
.Nd display
|
|
.Tn NFS
|
|
statistics
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl -libxo
|
|
.Op Fl cdEemqszW
|
|
.Op Fl w Ar wait
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
command displays statistics kept about
|
|
.Tn NFS
|
|
client and server activity.
|
|
For the NFSv4 server, the statistics are for operations within the Compound
|
|
RPCs and not the count of RPCs.
|
|
If you wish to compare RPC counts between NFSv3 and NFSv4, you must use
|
|
statistics in the client(s).
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width "-w wait"
|
|
.It Fl c
|
|
Only display client side statistics.
|
|
.It Fl d
|
|
Display statistics for the NFS server that are similar to those
|
|
displayed by
|
|
.Xr iostat 8 .
|
|
This includes kilobytes per transfer, transfers per second, and megabytes per
|
|
second for read, write, and all operations.
|
|
It also includes the current queue depth, the busy percentage, and latency
|
|
for all operations.
|
|
If the
|
|
.Fl W
|
|
flag is added, commits per second, commit latency, read latency, and write
|
|
latency are also added to the display.
|
|
The busy percentage shown can exceed 100 at times.
|
|
This is because of the way busy percentages are calculated.
|
|
The busy time is calculated by adding the elapsed time between the
|
|
last time an operation started or finished,
|
|
and the current time.
|
|
If there is only one operation outstanding, the "busy time" time
|
|
will get updated with the total time of that operation.
|
|
That means that the difference in the busy time between the two
|
|
measurement intervals (often 1 second)
|
|
will increase by more than the measurement interval.
|
|
.It Fl e
|
|
Report the extra statistics collected by the NFS client and
|
|
server for NFSv4.
|
|
.It Fl E
|
|
Similar to
|
|
.Fl e
|
|
except that the statistics include NFSv4.1 and NFSv4.2 and the numbers aren't
|
|
clipped at one billion.
|
|
Only one of
|
|
.Fl e
|
|
or
|
|
.Fl E
|
|
can be specified.
|
|
.It Fl M
|
|
Deprecated and ignored.
|
|
.It Fl m
|
|
Report the mount options for all NFS client mounts.
|
|
This option overrides all others and
|
|
.Nm
|
|
will exit after completing the report.
|
|
.It Fl N
|
|
Deprecated and ignored.
|
|
.It Fl s
|
|
Only display server side statistics.
|
|
.It Fl W
|
|
Use wide format with interval short summary.
|
|
This option is especially
|
|
useful when combined with
|
|
.Fl c ,
|
|
.Fl d ,
|
|
or
|
|
.Fl s
|
|
and a time delay.
|
|
.It Fl w Ar wait
|
|
Display a shorter summary of
|
|
.Tn NFS
|
|
activity for both the client and server at
|
|
.Ar wait
|
|
second intervals.
|
|
.It Fl z
|
|
Reset statistics after displaying them.
|
|
.It Fl q
|
|
Do not print headers.
|
|
.It Fl -libxo
|
|
Generate output via
|
|
.Xr libxo 3
|
|
in a selection of different human and machine readable formats.
|
|
See
|
|
.Xr xo_parse_args 3
|
|
for details on command line arguments.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr fstat 1 ,
|
|
.Xr netstat 1 ,
|
|
.Xr ps 1 ,
|
|
.Xr systat 1 ,
|
|
.Xr sysctl 3 ,
|
|
.Xr iostat 8 ,
|
|
.Xr nfsdumpstate 8 ,
|
|
.Xr pstat 8 ,
|
|
.Xr vmstat 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 4.4 .
|