Re: nfsstat --sleep=#

[Kevin Constantine <Kevin.Constantine-FfNkGbSheRGpB8w63BLUukEOCMrvLtNR@public.gmane.org>]

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
>>>>>
>>>>> --
>>>>> To unsubscribe from this list: send the line "unsubscribe linux-nfs"
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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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