I am confused as to the setup of distributed testing. I have read the
docs on how to set up but the use of server vs. client seems backwards
to me. I got the connections going but I'm not really understanding
how it works.
According to the docs, or how I am reading into them, there are many
JMeters running in server mode, therefore, many RMI registries running
on separate machines. For example, S1, S2, S3 are machines running
Jmeter server. I am thinking there is no GUI or batch jmeter running
at all, just the jmeter server.
Then according to the docs, there is only one client controller, which
uses the GUI to control. I'll call this machine C1. In C1's jmeter
properties file, it has S1, S2, and S3 listed as the remote_hosts
values. Then if C1's test plan has 100 thread users and I select
Run/RemoteStartAll, it will start the remote testing on all the server
machines.
The parts where I am confused:
1. The use of server and client is backwards to me. Shouldn't there
only be one server and many clients? And the server should be the
controller.
2. How on C1, if I specified 100 thread users, does it distribute
among the 3 server machines? Is it always divided evenly? Can I
control the distribution?
3. Are the results gathering done while the load test is running? I
read in previous archived messages that there is a "hold_samples"
property that you can set to indicate all results should be written at
the end of the test. However, I don't see such a property setting in
jmeter.properties. Then is the gathering of results done on C1?
4. Since C1 is the controller, it is not sending HTTP Requests, only
facilitating and from #3, gathering results?
Thanks for the clarification!
mabel
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