G'day JavaRequest
Ian Blavins Contract Performance Engineer Temenos -----Original Message----- From: Stuart Findlay [mailto:[EMAIL PROTECTED] Sent: 10 September 2007 10:30 To: JMeter Users List Subject: Re: A question of efficiency Thanks Ian just to clarify - are you referring to ExampleSampler.java and ExampleSamplerGui.java or JavaRequest? Stuart iblavins wrote: > G'day > > It takes a few minutes to do but I would suggest creating a Java sampler to > act as a 'gateway' (in the non technical sense) to Java functionality. > > You can pass parameters into the sampler via the normal sampler parameter > interface and use a regular expression parser to get the result back into > JMeter variables. The sampler can use arbitrary Java functionality to > transform the input to the output. (Just because it is a sampler doesn't > mean it has to call a server and normally you won't). > > You then add the sampler to your test plan in the normal way to compute > values wherever you need them. > > Once you have one it is easy to either add more functionality to it or to > clone it for different functionality. > > There is a sample Java sampler among the JMeter resources. > > Be advised that, because JMeter runs in a single JVM on each JMeter server, > things like static variables work across all instances of the sampler on > that JMeter server (for good or bad). > > > > Ian Blavins > Contract Performance Engineer > Temenos > > > > -----Original Message----- > From: Stuart Findlay [mailto:[EMAIL PROTECTED] > Sent: 10 September 2007 09:26 > To: JMeter User Group > Subject: A question of efficiency > > Hi all > > I'm looking for some answers and opinions in relation to using BeanShell > functions and the efficiency of JMeter scripts calling them. > > I'm load testing a calendar application and need to generate and > manipulate random dates in the iCal DTSTAMP format i.e. 20070910T090800Z > for the time of writing this mail. > > I found that for some of the more complex operations such as generating > random dates within a given timeframe and then adding hours, days or > weeks onto these it was very cumbersome to do this using JMeter alone so > I settled on BeanShell functions using the Calendar class to manipulate > dates and the following functions to convert the dates: > > > // Convert Java Calendar object to iCal timestamp > String calendarToTS(Calendar cal) { > String ret = String.format("%1$tY%1$tm%1$tdT%1$tH%1$tM%1$tSZ", new > Object[] {cal}); > > return ret; > } > > // Convert iCal timestamp to Java Calendar object > Calendar tsToCalendar(String ts) { > Calendar ret = Calendar.getInstance(); > > ret.set(Calendar.YEAR, new Integer(ts.substring(0,4))); > ret.set(Calendar.MONTH, new Integer(ts.substring(4,6)) - 1); > ret.set(Calendar.DATE, new Integer(ts.substring(6,8))); > ret.set(Calendar.HOUR_OF_DAY, new Integer(ts.substring(9,11))); > ret.set(Calendar.MINUTE, new Integer(ts.substring(11,13))); > ret.set(Calendar.SECOND, new Integer(ts.substring(13,15))); > > return ret; > } > > > > When I run a load test the jmeter process uses about 90% of the cpu on a > 4 CPU solaris box which would normally only see about 20% load with an > equivalent script which doesn't call any BeanShell functions. > > Does anyone have any suggestions for a more efficient way off accessing > Java functionality from JMeter. > > Thanks, Stuart > > ps - apologies for the half message sent by mistake beforehand. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > This email (and any attachments) contains confidential information, and is intended > only for the named recipient. Distribution or copying of this email by anyone > other than the named recipient is prohibited. If you are not the named or > intended recipient, please notify TEMENOS or the sender immediately and > permanently destroy this email (and any attachments) and all copies of it. No > member of TEMENOS Group AG or any of its associated or affiliated companies is > liable for any errors or omissions in the content or transmission of this > email. 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