Question about "Request Activity"

[andrew]

Greetings...

I'm working on a load test and I have a question about understanding
"Running Requests" and "Request Activity". We are executing a program
from a workstation that sends our Cold Fusion server 10 XML requests
at once, using separate threads. Each request take anywhere from 3 to
4 seconds to complete. However, when I look at "Running Requests" I
only see two. Sometimes, I might see a third, but normally I just see
two requests running at one time. Now if we ramp it up to 50 requests
at once, I'll see up to 20 requests being processed at once (our limit
is 20) and requests starting to be ignored. So I know the server is
capable of doing more than two processes at once. What I don't
understand is why we only see two requests, when we send it 10.
Shouldn't I see all 10 of the requests being processed?

Thanks,

-a

[Darren Pywell]

You should be seeing all 10! The question is why don't they appear...

First I'd take a look at the Request History page to see how quickly
the requests are being received and processed (or take a look at the
request-*.log files - where you can see an entry for each step of the
request processing.)

It could be that the configuration of the load tool has some request
throttling going on and that is why you don't see more. When you ramp
to 50 actually you may also not be receiving 50 either, perhaps less
but enough to fill the available threads. This slows down the machine
and then further requests do bounce giving the impression that all 50
are running. This is just a shot in the dark, but it's happened to me
before so I'd check the load tool and see has any config that you
don't want.

Cheers,
Darren