If you have 500 (truly) concurrent users then you need at least 500 threads in tomcat, try with 550 thread.
You run jmeter on windows or linux os? Best regards, Jakub 2009/9/11 Mytho Logic <[email protected]>: > Hi, > > I changed the maxthreads limit in tomcat server.xml to 400 and tried the > same testplan again..but few sample requests gets failed and throws > exception. > what should I do to solve the problem. > > Exception:- > > java.net.ConnectException: Connection refused: connect > at java.net.PlainSocketImpl.socketConnect(Native Method) > at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) > at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) > at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) > at java.net.Socket.connect(Socket.java:519) > at java.net.Socket.connect(Socket.java:469) > at sun.net.NetworkClient.doConnect(NetworkClient.java:157) > at sun.net.www.http.HttpClient.openServer(HttpClient.java:382) > at sun.net.www.http.HttpClient.openServer(HttpClient.java:494) > at sun.net.www.http.HttpClient.<init>(HttpClient.java:231) > at sun.net.www.http.HttpClient.New(HttpClient.java:304) > at sun.net.www.http.HttpClient.New(HttpClient.java:316) > at > sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:817) > at > sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:769) > at > sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:694) > at > org.apache.jmeter.protocol.http.sampler.HTTPSampler.sample(HTTPSampler.java:431) > at > org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1021) > at > org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1007) > at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:290) > at java.lang.Thread.run(Thread.java:595) > > Thanks > Maumita > > > On Fri, Sep 11, 2009 at 3:07 PM, sebb <[email protected]> wrote: > >> On 11/09/2009, Mytho Logic <[email protected]> wrote: >> > Hi, >> > >> > In tomcat server.xml, I changed the maxtheads limit to 300 and kept >> > JAVA_OPTS=-Xms512m -Xmx1024m >> > >> > But not succeed.I am getting same "java.net.ConnectException: Connection >> > refused: connect" exception. Am I missing anything to change in >> server.xml >> > file. >> > The machine on which tomcat server is running has 2 GB RAM. >> > >> > Please help on this. >> >> This appears to be a Tomcat configuaration issue. >> >> Read the Tomcat documentation carefully, and if that does not answer >> your query, then post a question on the Tomcat user list. >> >> > Thanks >> > Maumita >> > >> > >> > On Fri, Sep 11, 2009 at 10:15 AM, Deepak Shetty <[email protected]> >> wrote: >> > >> > > Hi >> > > http://tomcat.apache.org/tomcat-5.5-doc/config/http.html >> > > There are three thread related properties in server.xml . You seem to >> have >> > > run into maxThreads limit >> > > Note that if your server cant handle the load that is a server/OS >> problem , >> > > you are more likely to get help on a tomcat forum. Jmeter is >> generating the >> > > load correctly. >> > > regards >> > > deepak >> > > >> > > On Thu, Sep 10, 2009 at 9:38 PM, Mytho Logic < >> [email protected] >> > > >wrote: >> > > >> > > > Hi, >> > > > >> > > > I am using jmeter version 2.3.2. >> > > > To test my application for 200 concurrent users I have used >> distibuted >> > > > testing set up. >> > > > It works fine for 200 users. >> > > > The test plan was - >> > > > 1. 200 concurrent users will first hit the home page >> > > > 2. After that 200 concurrent users will hit the products page >> > > > 3. After that 200 concurrent users will hit the product Detail page >> > > > >> > > > For concurrent user setup I have used 'Synchronizing Timer' above >> the >> > > > thread >> > > > groups and mentioned 200. >> > > > It works fine and I got the result. >> > > > >> > > > Setup:- >> > > > >> > > > Tomcat server, Jmeter client and Jmeter server all are in 3 >> different >> > > > machine. >> > > > >> > > > Tomcat Server >> > > > ------------- >> > > > JAVA_OPTS=-Xms1024m -Xmx1024m >> > > > >> > > > Jmeter Client >> > > > ------------- >> > > > HEAP=-Xms512m -Xmx1024m >> > > > >> > > > Jmeter Server >> > > > ------------- >> > > > HEAP=-Xms512m -Xmx4096m >> > > > >> > > > Using the same configuration and same setup,when i tried for 220 >> > > concurrent >> > > > users for few few sample requests I got >> > > > "java.net.ConnectException: Connection refused: connect: exception. >> > > > Sometime I succeded for 220 concurrent users without any errors.But >> next >> > > > time whne I again run the test plan for >> > > > 220 concurrent users I got exception. >> > > > >> > > > What is the reason behind this exception and how can I solve this? >> > > > I need to load my application upto 500 concurrent users. Please >> suggesst >> > > > how >> > > > can I do this? >> > > > >> > > > This is an urgent requirement. >> > > > >> > > > Thanks >> > > > Maumita >> > > > >> > > >> > >> >> --------------------------------------------------------------------- >> 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]
