[OmniOS-discuss] How to get NFS read & write latency in OmniOS r151016

[張峻宇]

Hi all,
      According to the release note of OmniOS r151016, we could get “IOPS, bandwidth, and latency kstats for NFS server”

      there is lots of information showing when I use enter command #kstat,
      I want to get the “nfs read & write latency for NFS server”

      Q1 : Is the ‘nfs:0:rfsprocio_v4_write:wtime’ & ‘nfs:0:rfsprocio_v4_read:wtime’ meant write & read latency ?
      Q2 : I mounted the nfs share directory, and write lots file to it, the number of ‘nfs:0:rfsprocio_v4_write:wtime’ & ‘nfs:0:rfsprocio_v4_read:wtime’ still zero. Why ?

      #kstat –p –m nfs –n rfsprocio_v4_write
        nfs:0:rfsprocio_v4_write:class        rfsprocio_v4
nfs:0:rfsprocio_v4_write:crtime     50.833043074
nfs:0:rfsprocio_v4_write:nread      3932160
nfs:0:rfsprocio_v4_write:nwritten  5374607360
nfs:0:rfsprocio_v4_write:rcnt 0
nfs:0:rfsprocio_v4_write:reads       163840
nfs:0:rfsprocio_v4_write:rlastupdate     12048225488385
nfs:0:rfsprocio_v4_write:rlentime  33429565743
nfs:0:rfsprocio_v4_write:rtime       23992279289
nfs:0:rfsprocio_v4_write:snaptime 269635.483575440
nfs:0:rfsprocio_v4_write:wcnt        0
nfs:0:rfsprocio_v4_write:wlastupdate    0
nfs:0:rfsprocio_v4_write:wlentime 0
nfs:0:rfsprocio_v4_write:writes      163840            / number of writes /
nfs:0:rfsprocio_v4_write:wtime     0                      / wait queue - time spent waiting /

        #kstat –p –m nfs –n rfsprocio_v4_read
        nfs:0:rfsprocio_v4_read:class rfsprocio_v4
nfs:0:rfsprocio_v4_read:crtime      50.833003263
nfs:0:rfsprocio_v4_read:nread       0
nfs:0:rfsprocio_v4_read:nwritten   0
nfs:0:rfsprocio_v4_read:rcnt  0
nfs:0:rfsprocio_v4_read:reads        0
nfs:0:rfsprocio_v4_read:rlastupdate      0
nfs:0:rfsprocio_v4_read:rlentime   0
nfs:0:rfsprocio_v4_read:rtime        0
nfs:0:rfsprocio_v4_read:snaptime  269635.483080962
nfs:0:rfsprocio_v4_read:wcnt 0
nfs:0:rfsprocio_v4_read:wlastupdate     0
nfs:0:rfsprocio_v4_read:wlentime 0
nfs:0:rfsprocio_v4_read:writes       0
nfs:0:rfsprocio_v4_read:wtime      0



Best regards,
---------------------------------------------
張峻宇
中華電信研究院雲端運算研究所
TEL: 03-4245663


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