Hi >I can see from Jmeter.log file that all the threads gets activated Which doesnt mean that the server sees that many . if you could check on your server the total number of concurrent connection you saw in either case. if your average times are increasing as seen on the server then I would guess your server is seeing a higher load in the second case.
regards deepak On Thu, Jan 6, 2011 at 8:23 PM, Ravindra Gupta <[email protected]> wrote: > Hi Sebb, > > I am using sampler called HTTP Request HTTPClient. Here we just post an xml > file with the request. > If I run 50 thread, throughput that I am getting is ~585 req/sec. > But if I run two jmeter instances, its throughput as ~236 req/sec and 236 > req/sec repectively. These numbers. may differ but slightly. > > Using Jmerter version 2.3.2. test is running in a separate subnet, so > tthere > is no problem of network latency > > The interesting thing is that if I run only one Jmeter instance with 25 > threads , throughput is ~620 req/sec. > > > Hi Deepak, > > I can see from Jmeter.log file that all the threads gets activated , there > are no failures. I think its able to make 50 connections because I am > getting responses correctly. > > Two Jmeter instance with 25 threads each > Avg request - 105 ms > Min - 9 ms > Max - 1305 req/sec > > 50 threads -single jmeter instance > Avg req - 82 ms > Min - 9 ms > Max - 1259 ms > > I have run multiple tests resulting in similar kind of data. > > Thanks, > Ravindra > > > On Thu, Jan 6, 2011 at 7:05 PM, sebb <[email protected]> wrote: > > > On 7 January 2011 02:26, Ravindra Gupta <[email protected]> wrote: > > > Hi All, > > > > > > I am facing a problem where if i run a single jmeter instance it > produces > > > much better throughput than when i am running 2 jmeter instance. > > > > > > Details about the test > > > > > > Script is very simple, it has just one sampler which post xml request > to > > app > > > server. Each thread posts one xml request and finishes. > > > > > > In one test, > > > At the same time I simulated 50 Threads with no 0 rampup time. Lets say > > it > > > produces x throughput. > > > > > > In another test > > > I simulated 2 jmeter instance (not in master slave) from multiple > > machines > > > with 25 thread (0 rampup) on each instance. The combined throughput I > am > > > getting in this model is much lower than in x. > > > What could be the case of such a behaviour. > > > > > > Ideally the combined throughput should be equivalent to x. > > > > > > All the jmeter clients are server class machines with CentOS. Jmeter is > > > running in non GUI mode. > > > wht could be the cause of this behaviour? > > > > It's very unlikely to be a JMeter problem, so you need to do some more > > tests to try and establish what causes the difference when using 2 > > test hosts. > > > > What throughput do you get if you run the 50 thread test on the second > > host? > > Do you get similar throughput to a 50 thread run on the original host? > > > > What about running two 25 thread tests on the same host? > > Do you get similar thoughput to a single test? > > > > What sampler are you using to post the XML? > > > > > Thanks in advace, > > > Ravindra > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > >
