[OpenAFS-devel] What data from production environments could help OpenAFS development?

[Jason Edgecombe]

good to know.

On 08/23/2011 07:50 AM, Chaz Chandler wrote:
> Yes, the afsio in the codecase does not use the client cache.
>
> Jason Edgecombe<jason@rampaginggeek.com>  wrote:
>
>> On 08/22/2011 10:22 AM, Chas Williams (CONTRACTOR) wrote:
>>> In message<4E512186.7020506@rampaginggeek.com>,Jason Edgecombe writes:
>>>> I was wondering. What data from production environments would be helpful
>>>> for the OpenAFS developers? Would it help us to set priorities? Would it
>>>> help us pinpoint performance bottlenecks? Could the data be gathered
>>>> without a significant performance penalty?
>>> i think the primary problem here might be that there isnt an 'afs server'
>>> benchmark that you can run.  you can bench the drives, network or the
>>> cpu individually but there isnt anything (that i know of) to quantify an
>>> entire configuration.  collecting sar is nice, but some systems dont have
>>> the same capabilities so you might want something that is cross platform
>>> (just like afs).
>>>
>>> talking to the fileservers though would be the best choice.  i gave
>>> using afsio some thought but i havent looked into it closely enough to
>>> see how much of the client cache is in use (which you would want to test
>>> seperately i imagine).
>>>
>> I thought afsio avoided the client cache. Is there another option to use?
>>
>> I vaguely recall some idea of recoding client/fileserver operations ans
>> replaying them to the fileserver. Did anything come of that?
>>
>> Jason
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