I believe there is a similar question in the mail archives. Tomcat has a limit on max number of connections/ thread which needs to be increased if you want to increase the load.
On Fri, Sep 25, 2009 at 12:32 AM, Mytho Logic <[email protected]>wrote: > Hi, > > I am not able to run test plan for 270 concurrent users. Please find below > all my details. > > Test setup Details- > 1> Jmeter Client > HEAP=-Xms512m -Xmx1024m > > 2> Jmeter Server(quantity:1) > HEAP=-Xms512m -Xmx4096m > > 3> Tomcat Server > JAVA_OPTS=-Xms1024m -Xmx1024m > > 4> For 260 Concurrent users, changed the default maxthreads limit > from 200 to 2500. Below 2500 maxthreads limit, > Jmeter throws a “java.net.ConnectException: Connection refused:” > > 5> Test Plan:- > - User will hit home page of a web application > - User will go to products page > - Products page has 9 product images.And each src of images is basically > URL. > So 9 http sample requests for 9 product images > - User will go to product detail page > Total Sample Requests => 12 * 260 = 3120 > > 6> Finally, it works properly without any error. > > Problem: > -------- > For 270 concurrent users ( with the same configuration mentioned above),I > am > getting error message for > few http sample requests. > Error message: “java.net.ConnectException: Connection refused:” > > What should I do to resolve the problem. > > Questions: > ---------- > 1> To resolve the problem, should I use another Jmeter server? Currently, I > am using one Jmeter server > 2> Should I gradually increase the maxthreads limit in tomcat's > "server.xml" > to check at what point it works > properly for 270 users? > 3> My target is 2500 concurrent users. > So to test this how many Jmeter servers I need. > Also what should be the Heap size in those servers. > 4> Is it require to increase the tomcat's JAVA_OPTS ? Currently, I had > given > 1 GB. > > Thanks > Maumita >
