man page - isistatistics

hello,

we are analyzing performance issues of one of isilon cluster , i am able to run isi statistics xxx cmds but i would like to know the header meanings like what is Ops / in / Out stands for. is there any way to get that info, i lookup for CLI guide in emc support page no luck. [ man of below giving description of cmd but no depth meaning of headers ] .

nas6# man isistatistics

No manual entry for isistatistics

nas6# man isi statistics

NAME

       isi -- OneFS cluster administration.

DESCRIPTION

       The  isi  command  allows a variety of operations to be performed on an

       Isilon cluster.  These commands  are  generally  independent,  and  few

       flags  are shared.  The base command provides a --help flag to retrieve

       general usage information, and additionally each subcommand provides  a

       --help flag to retrieve usage information for that specific command.  A

       full description of each subcommand and its  arguments  and  parameters

       follows.

thank you.