Usage: nfsiostat [ <interval> [ <count> ] ] [ <options> ] [ <mount point> ]

 Sample iostat-like program to display NFS client per-mount' statistics.  The <interval> parameter
specifies the amount of time in seconds between each report.  The first report contains statistics
for the time since each file system was mounted.  Each subsequent report contains statistics
collected during the interval since the previous report.  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 command generates reports
continuously. If one or more <mount point> names are specified, statistics for only these mount
points will be displayed.  Otherwise, all NFS mount points on the client are listed.

Options:
  --version             show program's version number and exit
  -h, --help            show this help message and exit

  Statistics Options:
    File I/O is displayed unless one of the following is specified:

    -a, --attr          displays statistics related to the attribute cache
    -d, --dir           displays statistics related to directory operations
    -p, --page          displays statistics related to the page cache

  Display Options:
    Options affecting display format:

    -s, --sort          Sort NFS mount points by ops/second
    -l LIST, --list=LIST
                        only print stats for first LIST mount points
    -m, --megabytes     display throughput in megabytes per second (MB/s) instead of kilobytes per
                        second (kB/s)