G'day
I've been trying to identify the cause of a major loss of throughput in my JMeter scripts (note, in the throughput of the scripts through the JMeter engine, not loss of throughput on the target server). It appears the If controller is very expensive in JMeter throughput terms. If I wrap the sampler call of an existing test plan with an If controller that has an expression of "true" == "true" then the throughput of my scripts drops from around 36,000 scripts per second to around 2,200 scripts per second. This is jmeter 2.3.1 with the client on Windows XP and remote jmeter hosts on an IBM p570 running AIX. Is there a known slowness in the If controller ? (These are test scripts designed to determine how to get high JMeter throughput so they don't do very much. In my real scripts half the expression is of course a variable computed in earlier test plan steps.) I can easily get around this since my sampler is a custom written Java sampler. I just have to pass the test variable into the sampler and let it decide whether to execute. Ian Blavins Software performance specialist . TEMENOS The Banking Software Company . PeopleBuilding 2, Maylands Av Hemel Hempstead UK HP2 4NW . T: +44 (0) 1442 431 106 E: [EMAIL PROTECTED] . www.temenos.com <http://www.temenos.com> . P Consider the environment. Please don't print this e-mail unless you really need to. Disclaimer: If you have received this e-mail in error please notify the sender. Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of TEMENOS. We recommend that you check this e-mail and any attachments against viruses. TEMENOS accepts no liability for any damage caused by any malicious code or virus transmitted by this e-mail.
