Flavio, my box has 12GB RAM and 16-processors installed with Centos6.2, JDK 1.6 and Jmeter 2.7.
Thanks. On Mon, Jul 30, 2012 at 7:39 AM, Flavio Cysne <[email protected]> wrote: > Can you provide us with your box configuration? OS distribution and > version, JDK version, JMeter version, Hardware spec. > > Try with other configurations of GC like -Xincgc, -XX:UseParallelOldGC, > -XX:UseConcMarkSweepGC, etc (one at a time) and compare the results. > Try with -XX:AggressiveHeap (JDK 1.4) or -XX:+AggressiveOpts (JDK 1.5+) > instead of -Xms and -Xmx. ( > http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html > ) > > I work with a distributed environment with 3 JMeter servers per machine > (CentOS5, 6GB RAM, 2-cores processor, 20GB HD), using 1.5GB heap per JMeter > server. This configuration hold almost 300 threads per JMeter server with > no problems. > Sometimes a big heap mess up more than help. > > Regards. > Flávio Cysne > > 2012/7/27 Deepak Goel <[email protected]> > >> Hey >> >> You might need a bigger hardware box, i guess :) >> >> :) >> Deepak >> >> On 7/25/12, Philippe Mouawad <[email protected]> wrote: >> > Hello, >> > Read this : >> > http://jmeter.apache.org/usermanual/best-practices.html >> > >> > Ensure you are not using View Results Tree or any other costly listeners. >> > >> > After checking all these points don't jump to conclusion that other >> > parameters are OK if your original load test tool is reporting OK. >> > Built-in samplers are rather highly tested and used , so i am not sure >> > writing your own will help. >> > >> > Regards >> > Philippe M. >> > >> > On Tue, Jul 24, 2012 at 8:28 PM, unjc email <[email protected]> >> wrote: >> > >> >> Hi all, >> >> >> >> I have a test plan with 100 threads of HTTP Request samplers hitting a >> >> web server via proxy server. My goal is to hammer the server as fast >> >> as possible for an hour. When I run the test for first 30 seconds, >> >> the throughput is excellent; slowly I found it keeps dropping. I am >> >> sure it's not a problem with the network, proxy or web server because >> >> the other load-testing tool has been working fine before I switch to >> >> try Jmeter. >> >> >> >> I found that Jmeter consumes lots of memory and cpu cycles during the >> >> test. I have tried "Statistical" and "Stripped" mode, along with >> >> 2048M heap size. Nothing really helps to keep the test running for >> >> long period of time. The java process is one hungry monster in the >> >> top stats. Is there any lighter sampler available (that supports >> >> proxy, custom originating IP, and https)? If not, is there any good >> >> document that could help start writing my own plugin? Any comment or >> >> advice will be greatly appreciated. >> >> >> >> >> >> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >> >> 6128 root 20 0 10.5g 2.3g 14m S 539.2 19.5 6:16.95 java >> >> -server -XX:+HeapDumpOnOutOfMemoryError -Xms2048m -Xmx2048m >> >> -XX:NewSize=128m -XX:MaxNewSize=128m -XX:MaxTenuringThreshold=2 >> >> -Dsun.rmi.dgc.client.gcInterval=6 >> >> >> >> >> >> >> >> Thanks, >> >> Jacky >> >> >> >> --------------------------------------------------------------------- >> >> To unsubscribe, e-mail: [email protected] >> >> For additional commands, e-mail: [email protected] >> >> >> >> >> > >> > >> > -- >> > Cordialement. >> > Philippe Mouawad. >> > >> >> >> -- >> Namaskara~Nalama~Guten Tag~Bonjour >> >> >> -- >> Keigu >> >> Deepak >> +91-9765089593 >> [email protected] >> http://www.simtree.net >> >> Skype: thumsupdeicool >> Google talk: deicool >> Blog: http://loveandfearless.wordpress.com >> Facebook: http://www.facebook.com/deicool >> >> "Contribute to the world, environment and more : >> http://www.gridrepublic.org >> " >> >> --------------------------------------------------------------------- >> 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]
