[dtrace-discuss] Using DTrace to monitor productions systems

[Darren Reed]

Dirk Volkmar wrote:

>Hi,
>
>we are developing and operating an very critical application in the financial sector. Now our customer wants us to report performance data (roundtrip times of the messages routed)
>

I'd press them for more details on precisely what they consider
the round trip time to be.  Is it from send() of the original to the
recv() of the reply?

Is it from the moment they hand the message on to you to
the time they get it back?

Is it from the time the packet is sent out to when the reply
is seen?

Or is it something else?

Darren