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List:       jmeter-user
Subject:    RE: Distributing over machines in addition to threads
From:       "Karr, David" <david.karr () cacheflow ! com>
Date:       2001-07-23 20:37:23
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When you run multiple threads on a single system, even on a multi-cpu
system, there is some contention between the threads, slowing them down a
bit.  Distributing the load to multiple hosts achieves the same performance
advantages as doing the same for a web/application server.  In any case,
instead of running 10 threads on a single system, you can run 10 threads on
10 systems, making it much more likely you'll be able to find peak load
problems or race conditions in your application or server.

-----Original Message-----
From: Daniel Quaroni [mailto:dquaroni@OpenRatings.com]
Sent: Monday, July 23, 2001 1:08 PM
To: 'jmeter-user@jakarta.apache.org'
Subject: RE: Distributing over machines in addition to threads


How is running multiple threads from one machine different than running 1
thread from multiple machines?
> -----Original Message-----
> From: Karr, David [mailto:david.karr@cacheflow.com]
> Sent: Monday, July 23, 2001 4:06 PM
> To: 'jmeter-user@jakarta.apache.org'
> Subject: Distributing over machines in addition to threads
> 
> 
> It's nice that you can specify that tests will use multiple 
> threads, to put
> additional stress on a server/application.  However, to 
> REALLY put stress on
> a server/application, it would be useful to implement the 
> ability to run the
> tests from more than one host, in a controlled fashion.  This 
> certainly
> isn't easy to manage, but it seems like this could be very useful for
> testing applications which expect severe peak user load.  I 
> don't believe I
> saw any facility like this in JMeter.
> 
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