They show on average response times practically no difference between apache and jmeter. i.e. 1-2ms or thereabouts.
--------- Original Message -------- From: JMeter Users List <[email protected]> To: JMeter Users List <[email protected]>, Lists <[EMAIL PROTECTED]> Subject: Re: Time spent where? Date: 28/01/08 17:03 > On 28/01/2008, Lists <[EMAIL PROTECTED]> wrote: > > This difference is a huge one for our system. We achieve average response > > times under normal load of 30-40ms end to end. > > What do the apache logs show in this situation? > > > I dont think this is network contention. nicstat shows us the interface > > rarely gets above 20% utilisation. > > > > However i shall get the network admin guy to setup some logging so we can > > prove this. > > > > I will also look at apache stats and see how many mb's are transferred > > during the 10min test. > > --------- Original Message -------- > > From: sebb <[EMAIL PROTECTED]> > > To: JMeter Users List <[email protected]>, Lists > > <[EMAIL PROTECTED]> > > Subject: Re: Time spent where? > > Date: 28/01/08 16:48 > > > > > On 28/01/2008, Lists &lt;[EMAIL PROTECTED]&gt; wrote: > > > &gt; &gt; > > > &gt; &gt; How much longer? A few percent or much more? > > > &gt; &gt; > > > &gt; > > > &gt; significantly. an average of 89ms at the apache logs, and yet 140 at > > > > > > Does not seem too bad considering that the data has to be transferred > > > across the network. > > > > > > &gt; jmeter. The key point is though that this latency is pratically zero > > at > > > &gt; lower loads. The reason it causes us a problem is we define failure > > by > > > &gt; saying 95% of responses must be less than a given response time - so > > this > > > &gt; extra gap is seemingly causing us to fail the tests, but > > unnecessarily. > > > > > > Depends on the target of course. > > > > > > &gt; &gt; Are all samples affected? > > > &gt; > > > &gt; Err, good question, i've been looking at averages, so i dont know at > > this > > > &gt; point. I guess i should look at standard deviation perhaps..? > > > &gt; > > > &gt; &gt; Does the additional time depend on the sample size? > > > &gt; > > > &gt; Err, sample size? or throughput? yes it increases with throughput. > > > &gt; > > > > > > I meant the number of bytes downloaded. > > > > > > Bigger samples generally take longer to download. > > > Some conditions (e.g. network contention) may affect larger samples > > > more than smaller ones as the transfer time is greater as a proportion > > > of total time. > > > > > > &gt; &gt; Note that the elapsed time will necessarily be longer than the > > apache > > > &gt; &gt; log time; the JMeter latency should be closer to the apache log > > > &gt; &gt; timings. > > > &gt; &gt; > > > &gt; &gt; Are you using any functions in the samplers? Function execution > > is > > > &gt; &gt; single-threaded. > > > &gt; > > > &gt; I'm not sure, i'll double check. However i have profiled jmeter > > recently > > > &gt; and it didnt seem to be blocking - i do need to double check this, > > hopefully > > > &gt; i'll do that tomorrow. > > > &gt; > > > &gt; > > > &gt; &gt; &amp;gt; Thanks, > > > &gt; &gt; &amp;gt; Dan > > > &gt; &gt; &amp;gt; > > > &gt; &gt; &amp;gt; ________________________________________________ > > > &gt; &gt; &amp;gt; Message sent using UebiMiau 2.7.10 > > > &gt; &gt; &amp;gt; > > > &gt; &gt; &amp;gt; > > > &gt; &gt; &amp;gt; > > > &gt; &gt; &amp;gt; > > --------------------------------------------------------------------- > > > &gt; &gt; &amp;gt; To unsubscribe, e-mail: > > [EMAIL PROTECTED] > > > &gt; &gt; &amp;gt; For additional commands, e-mail: > > [EMAIL PROTECTED] > > > &gt; &gt; &amp;gt; > > > &gt; &gt; &amp;gt; > > > &gt; &gt; > > > &gt; &gt; > > --------------------------------------------------------------------- > > > &gt; &gt; To unsubscribe, e-mail: > > [EMAIL PROTECTED] > > > &gt; &gt; For additional commands, e-mail: > > [EMAIL PROTECTED] > > > &gt; &gt; > > > &gt; &gt; > > > &gt; &gt; > > > &gt; > > > &gt; ________________________________________________ > > > &gt; Message sent using UebiMiau 2.7.10 > > > &gt; > > > &gt; > > > &gt; > > > &gt; --------------------------------------------------------------------- > > > &gt; To unsubscribe, e-mail: [EMAIL PROTECTED] > > > &gt; For additional commands, e-mail: [EMAIL PROTECTED] > > > &gt; > > > &gt; > > > > > > > > > > ________________________________________________ > > Message sent using UebiMiau 2.7.10 > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > ________________________________________________ Message sent using UebiMiau 2.7.10 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
