Been away from this issue for a little while.
Took a look at "stats list counters nfsv3" and "stats show nfsv3."
Looks like exactly what I'm looking for but it's showing for either the root filer or the total physical filer. Any way to show it for a specific vFiler?
Randy
-----Original Message----- From: Borzenkov, Andrey [mailto:andrey.borzenkov@ts.fujitsu.com] Sent: Thursday, February 02, 2012 2:39 AM To: Jan-Pieter Cornet Cc: Randy Rue; toasters@teaparty.net Subject: RE: nfsiostat and client NFS connections
I could not find information what exactly is measured on filer. I.e. does it show total time from receiving request on LAN port until response is sent out of LAN port or there may be extra delay e.g. due to packet queuing in transport layer after response has been submitted.
So it is definitely useful for trend analysis, but as I understand here the problem is to find out exact place that incurs delays.
--- With best regards
Andrey Borzenkov Senior system engineer Service operations
-----Original Message----- From: Jan-Pieter Cornet [mailto:johnpc@xs4all.nl] Sent: Thursday, February 02, 2012 1:01 PM To: Borzenkov, Andrey Cc: Randy Rue; toasters@teaparty.net Subject: Re: nfsiostat and client NFS connections
On 2012-2-2 8:28 , Borzenkov, Andrey wrote:
I am not aware offhand of any other tool that would show NFS latency,
unfortunately.
There's "stats show volume:*:avg_latency" on the filer itself, for example (and several other latency counters, both under 'volume' and under 'nfsv3', see "stats list counters nfsv3" and "stats list counters volume").
Of course, that ignores any network latency to the clients, but it might still be a useful thing to measure. The same values are also available via the API, but not via SNMP.
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