I am not sure when reporting zpool stats was introduced into iostat but i love
it. however, i am not sure what to make of it.
For instance, what does a wsvc time of 20 seconds tell me? seems like my queue
is too big but that is not reflected in individual device statistics. in the
case of zpools, is this some sort of reflection on transaction groups?
can anyone explain why i see such large time associated with zpool in the
iostat output?
thanks,
j.
extended device statistics
r/s w/s Mr/s Mw/s wait actv wsvc_t asvc_t %w %b
device
0.0 3958.7 0.0 300.7 0.1 18.8 0.0 4.7 0 153
c3
0.0 11.8 0.0 0.1 0.0 0.0 0.0 0.6 0
0 c3t55CD2E400012A66Cd0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c3t55CD2E400012B753d0
0.0 2679.7 0.0 149.1 0.1 9.9 0.0 3.7 5
80 c3t50015178F36579E8d0
0.0 1267.2 0.0 151.5 0.0 8.8 0.0 7.0 3
73 c3t50015178F3657B74d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c3t50015178F3657AECd0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c3t50015178F36579E1d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c3t50015178F3657B85d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c3t50015178F36579BAd0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c3t50015178F3657A05d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c3t50015178F36579FEd0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c5
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
0 0 c5t4d0
0.0 3946.1 0.0 300.6 80582.9 26.2 20421.0 6.6 88 89 data
0.0 11.6 0.0 0.1 0.0 0.0 1.1 0.8 0 0 rpool
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