On 20/10/2009, Carl Shaulis <[email protected]> wrote: > Riddle me this batman! > > If I execute a test of 100 threads using my machine as the master and a > linux machine as the slave with each thread executing a single request I do > NOT get any negative response times. > > If I schedule a test of 100 threads to run 5 minutes looping indefinitely > the single request, I am getting negative response times. > > This does not make sense to me. > > More thoughts? >
The elapsed times are calculated by the sampler, so clock skew won't affect them. The times Which version of JMeter are you using? JVM? The elapsed time calculation depends on both of these. Do the timestamps look reasonable? > Carl > > > > On 10/20/09 1:14 PM, "Peter Lin" <[email protected]> wrote: > > > both systems must be insync. > > > > That's fundamental to all distributed applications, including > > distributed testing. > > > > peter > > > > On Tue, Oct 20, 2009 at 2:13 PM, Carl Shaulis <[email protected]> > wrote: > >> > >> The difference appears to be about 10 seconds between the clock on my > >> machine and the slave server. I added a constant timer and that made no > >> difference. > >> > >> Do the two machines really have to be set down to the exact second? > >> > >> I would think we are measuring the delta between start and stop on the > same > >> machine, so the clocks should not matter. > >> > >> Thanks, > >> > >> Carl > >> > >> On 10/20/09 1:06 PM, "Deepak Shetty" <[email protected]> wrote: > >> > >>> are the time clocks on both machines in sync? > >>> > >>> On Tue, Oct 20, 2009 at 11:02 AM, Carl Shaulis > <[email protected]>wrote: > >>> > >>>> Hello, > >>>> > >>>> We have recently set up a distributed JMeter environment. I am using my > >>>> MacBook Pro as the Master and a Linux machine as the slave. I executed > a > >>>> very simple test for 5 minutes, where 500 concurrent users access a > static > >>>> html page. The results showed an average response time of 0 ms. > Looking > >>>> more closely at the data there are numerous transactions that look like > >>>> this. > >>>> > >>>> Thread Name: SorryPageTest 1-97 > >>>> Sample Start: 2009-10-20 12:42:29 CDT > >>>> Load time: -897 > >>>> Latency: -897 > >>>> Size in bytes: 1723 > >>>> Sample Count: 1 > >>>> Error Count: 0 > >>>> Response code: 200 > >>>> Response message: OK > >>>> > >>>> How can you get a negative load time and negative latency with a 200 > >>>> response code? > >>>> > >>>> Help! > >>>> > >>>> Carl > >>>> > >> > >> > >> --------------------------------------------------------------------- > >> 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] > > > > > --------------------------------------------------------------------- > 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]
