Are you by any possibility using Virtual Machines for load injection? -Chaitanya M Bhatt http://www.performancecompetence.com
On Thu, Jul 8, 2010 at 5:13 PM, monpru <[email protected]> wrote: > > Hi, > I got negative latency values in my last load test of a web service. I > searched the web and found that this might have something to do with the > jdk > I use? I wonder what the problem is or how to ensure that I get correct > latency in future tests? I am not allowed to use Wireshark or similar to > check transmission times. The load during the tests was quite low (350 > requests/minute) and none of the machines involved in the test struggled. I > used 2 thread groups with one Constant Throughput Timer each, all samplers > are SOAP/XML-RPC Requests. I use csv format for logging. > I tried to re-run the test using different jdks and got results that > differed, but had negative and 0 latency in each of the tests. > I used JMeter 2.3.4 r785646 > and tried with the following > -Java HotSpot(TM) Server VM (build 1.5.0_16-b02, mixed mode) > -BEA JRockit(R) (build > R26.4.0-63_CR302700-72606-1.5.0_06-20061127-1104-linux-ia32 > -Java HotSpot(TM) Server VM (build 1.5.0_06-b05, mixed mode) > on a machine with CentOS release 4.7 and got negative and 0 latency for > all. > > I tried on a different machine using BEA WebLogic JRockit(TM) 1.4.2_08 JVM > R24.5.0-61 on Red Hat Enterprise Linux ES release 4 (Nahant Update 2): here > I only had 0 load time (the last value) for some requests, but no negative > or 0 latency. But I am unsure if this means the latency is correct this > time? > > I might be overlooking something obvious here, so I would be thankful for > hints regarding this problem. > > Regards, > Monique > -- > View this message in context: > http://jmeter.512774.n5.nabble.com/negative-response-times-again-tp1044999p1044999.html > Sent from the JMeter - User mailing list archive at Nabble.com. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
