Re: nfsstat --sleep=#

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J. Bruce Fields wrote:
On Thu, Mar 12, 2009 at 12:08:57PM -0400, Chuck Lever wrote:
On Mar 12, 2009, at Mar 12, 2009, 11:50 AM, J. Bruce Fields wrote:
On Thu, Mar 12, 2009 at 10:00:34AM -0400, Chuck Lever wrote:
Hi Kevin-

man watch(1)
What would you watch?
For example:

  watch -n3 nfsstat -c

You can also use the "-d" option to highlight the differences between the current sample and the previous sample.

He was asking for deltas; the above only gives cumulative totals.

There's no accurate one-line solution using the existing nfsstat
commandline, but it should be easy to add.


Something like this sort of works:
watch -n 1 'nfsstat --since /tmp/stats; nfsstat >/tmp/stats', but it feels more like a workaround than a feature.

Using watch doesn't allow you to see what happened in the past either.

Moving to a listed output format instead of the traditional nfsstat output (as seen below) makes it trivial with a simple grep to watch the stats that you really care about and ignore the rest.

-kevin


--b.

--b.

On Mar 11, 2009, at Mar 11, 2009, 9:37 PM, Kevin Constantine wrote:

I'd really like to have a way to output the nfsstat counters at
regular intervals (every 3 seconds) where the output is the difference between 3 seconds ago and now. Frequently I'll run a test and want to
watch the nfs call profile throughout the course of the test.

Does something like this already exist?
Are there objections to seeing a feature like this?

I'm thinking something like:
nfsstat --sleep=1

nfs v3 call:   Server   Client
     total:        0     3476
      null:        0        0
   getattr:        0     1679
   setattr:        0        0
    lookup:        0      839
    access:        0      839
  readlink:        0        0
      read:        0        0
     write:        0        0
    create:        0        0
     mkdir:        0        0
   symlink:        0        0
     mknod:        0        0
    remove:        0        0
     rmdir:        0        0
    rename:        0        0
      link:        0        0
   readdir:        0        0
readdirplus:        0        0
    fsstat:        0      119
    fsinfo:        0        0
  pathconf:        0        0
    commit:        0        0

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Chuck Lever
chuck[dot]lever[at]oracle[dot]com




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Chuck Lever
chuck[dot]lever[at]oracle[dot]com




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