iowait cpu state

[ghislain]

Hello,

in redhat RHES3 we have in top the following cpu state:

idle
user
system
iowait
nice
softirq

ex:

CPU states: cpu user nice system irq softirq iowait idle
total 2.2% 0.0% 0.5% 0.0% 0.0% 26.0% 71.0%
cpu00 2.1% 0.0% 0.5% 0.0% 0.1% 30.5% 66.4%
cpu01 1.9% 0.0% 0.1% 0.0% 0.0% 30.3% 67.4%
cpu02 2.3% 0.0% 0.5% 0.0% 0.0% 21.7% 75.2%
cpu03 2.3% 0.0% 0.7% 0.0% 0.0% 21.7% 75.0%
Mem: 1025308k av, 997640k used, 27668k free, 0k shrd, 128620k buff
447692k actv, 78480k in_d, 12596k in_c
Swap: 2040244k av, 56536k used, 1983708k free 326168k cached


i am able to see

system
idle
user

but not the others. Anyway to monitor those (i target mainly iowait here) ?


regards,
Ghislain.

[SharkCZ]

Yes, monitoring iowait state is important also for us.