> On Dec 22, 2015, at 4:44 PM, 張峻宇 <[email protected]> wrote:
>
> 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 ?
No, wtime is the wait queue occupancy (%wait in iostat -x)
A good reference is the man page for kstat(3kstat)
man -s 3kstat kstat
Hopefully, the information there will answer your Q2.
-- richard
> 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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