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

Chas Williams (CONTRACTOR) chas@cmf.nrl.navy.mil
Mon, 22 Aug 2011 10:22:35 -0400


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).