How to use IOSTAT command

UNIX Solaris
1

Hello everyone,

Can you please explain me what kind of information do IOSTAT show ?

iostat -xnz 3 show me those informations:

The I/O of the c0t0d0 disk is normal ?

               extended device statistics
    r/s    w/s   kr/s   kw/s wait actv wsvc_t asvc_t  %w  %b device
    0.0    1.0    0.0   50.7  0.0  0.0    0.0   12.5   0   1 c0t2d0
    0.0 3202.2    0.0 25636.5 361.7 14.8  112.9    4.6  93  93 c0t0d0

Thanks for your help.

2

this depends on how you would describe "normal"... a longer run of iostat would be more conclusive. i mostly use something something like this:

iostat -xnc -Td 3

and let it run for some time... but this depends on what i want to know about the IO behaviour of the storage.

3

Thanks for your answer. Normal means for me that my applications do not show any slowness.

what are the options -xnc show ?

Thanks

4 
man iostat