[OpenAFS] Re: Performance problems seem to be coming back

Andrew Deason adeason@sinenomine.net
Fri, 9 Sep 2011 11:08:58 -0500

On Fri, 09 Sep 2011 09:41:10 -0400
Dale Pontius <pontius@btv.ibm.com> wrote:

> Does anyone have advice on how to, as simply and automatically as 
> possible, monitor and log afs packet round trip times?

This doesn't help for examining existing traffic, but if you want a
really simple "afs ping" (or to be clear, what you're looking for is RTT
for Rx packets, not AFS specifically), you can kind of use 'rxdebug
-version'. Timing the execution of that isn't great to try to measure
the actual rtt since there are other delays in there (e.g. starting the
program itself) but it may be a useful relative measure, to see if the
response starts to get slower or doesn't come back at all.

Andrew Deason