Peter, thats ok, maybe some day we can get that much hit :) What if someone make so much requests and confuse the server? Does Tomcat have an prevention for this situation? Or is it beyond the scope?
David, I have already read all of resources you sent. Invariably performance issues are rarely a result of the web container > (Tomcat). You need to look at the developed software (dot).war that is > deployed on TC (use JMeter or some recognized software testing tools). * You are hitting your TC with 30000 transactions with a ramp up speed of 10 > seconds so you are at 3000/sec. If as you say the web container is not > handling this you still need to look at what you web application is doing. > I dont talk about my application. It may contain bugs or incorrect logic, blaming Tomcat is not my intention. Many people thank developers and I admire Apache SF. I make that test of mine with "Shuffle Example" comes with Tomcat (XXX /examples/jsp/jsp2/jspattribute/shuffle.jsp). And it is a simple JSP page, cannot contain bugs :) * What is your planned network topology once you go to production? This > question naturally leads to what is your hosting options? If you have a > datacenter and have configured and installed your own servers is the best. > Next option is to build your servers and then co-locate. The least > advantageous option is renting servers (serverbeach.com etc.). If you are > hosting locally what is your upstream provider? (fat pipe) and type of > connection: T1, T3, OC1, OC3 etc. > * Type of scaling (horizontal vs vertical) > My purpose is finding out the limits of Tomcat with constant resources at the moment. Then I will continue with these. I just want to have an idea in general. However its better to give details. OS: Debian 4.0 r0 on VmWare RAM assigned to virtual machine: 1 gb CPU: Intel Core 2 Duo, 2 Ghz etc. Tomcat: 6.0.13 My starting script: /home/kullanici/Desktop/programlar/jdk1.6.0_03/bin/java -Xmx256m -Xms128m - Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager - Djava.util.logging.config.file=/home/kullanici/Desktop/programlar/Tomcat_6_win/conf/logging.properties- Djava.endorsed.dirs=/home/kullanici/Desktop/programlar/Tomcat_6_win/endorsed-classpath :/home/kullanici/Desktop/programlar/Tomcat_6_win/bin/bootstrap.jar:/home/kullanici/Desktop/programlar/Tomcat_6_win/bin/commons- logging-api.jar - Dcatalina.base=/home/kullanici/Desktop/programlar/Tomcat_6_win - Dcatalina.home=/home/kullanici/Desktop/programlar/Tomcat_6_win - Djava.io.tmpdir=/home/kullanici/Desktop/programlar/Tomcat_6_win/temp org.apache.catalina.startup.Bootstrap start Thank you, Peter and David 2008/1/26, David Brown <[EMAIL PROTECTED]>: > > Hello Ali, there are no absolute benchmarks for what you are looking for. > The central theme to any performance questions invariably lead to the <A> > word (Architecture). You need to evaluate you overall architecture from a > high level perspective. With this said the questions then are: > * What is your planned network topology once you go to production? This > question naturally leads to what is your hosting options? If you have a > datacenter and have configured and installed your own servers is the best. > Next option is to build your servers and then co-locate. The least > advantageous option is renting servers (serverbeach.com etc.). If you are > hosting locally what is your upstream provider? (fat pipe) and type of > connection: T1, T3, OC1, OC3 etc. > * Type of scaling (horizontal vs vertical) > * Invariably performance issues are rarely a result of the web container > (Tomcat). You need to look at the developed software (dot).war that is > deployed on TC (use JMeter or some recognized software testing tools). > * I have worked on high volume financial web applications that are running > at 3 to 4000 transactions/sec. A transaction is end-to-end a round-trip time > starting with the HTTP connection, processing and connection to the backend > DB, query results returned and subsequently a results web page displayed. > This is a HTTP get, put or post transaction. > * You are hitting your TC with 30000 transactions with a ramp up speed of > 10 seconds so you are at 3000/sec. If as you say the web container is not > handling this you still need to look at what you web application is doing. > > Ultimately, using JMeter you need to look here: > http://wiki.apache.org/jakarta-jmeter/ > > A expert in this area is Peter Lin: > http://tomcat.apache.org/articles/performance.pdf > > The JMeter has specific JSF testing reading: > http://wiki.apache.org/myfaces/PerformanceTestingWithJMeter > > Ali Ok wrote .. > > Thanks David, > > > > I mean, if I make 30000 requests in a very short time (about 10 > seconds); > > Tomcat does not respond. > > I read books, tutorials, faqs and threads at maling list about Tomcat > > tuning. But I couldnt find an example server.xml file used in production > or > > real test results. > > > > So I cant understand if 30000 requests in 10 seconds is normal or not. > > > > > > > > 2008/1/26, David Brown <[EMAIL PROTECTED]>: > > > > > > Hello Ali, please find included below a link URL that addresses the > JSF > > > performance issue. A much more rigorous test would be to use the > JMeter > > > distributed testing using the JMeter server. HTH, David. > > > > > > Ali Ok wrote .. > > > > Hi, > > > > > > > > We are building a web application with JSF. Last day I tested it > with > > > > JMeter. Results are bad (I guess). > > > > > > > > Then I tried to send 30000 requests with JMeter to "Shuffle Example" > in > > > > Tomcat's examples directory with a limited size of (256 MB I think) > > > memory > > > > resource given to Tomcat. This "Shuffle Example" does not query > database > > > or > > > > does not make complicated operations as you know; it is very simple. > > > > > > > > Question is, what should I expect? Does it have to respond all > requests? > > > Or > > > > is it normal to throw an exception about "Too many open files" (I > use > > > NIO > > > > connector) and finally OutOfMemoryError and parachute-thing? > > > > > > > > After I solve this, I can go on to JSF application testing. > > > > > > > > > > > > I couldnt find documents enough about this issue. Can you send me > some > > > > links? > > > > > > > > Thanks in advance. > > > > > > --------------------------------------------------------------------- > > > To start a new topic, e-mail: users@tomcat.apache.org > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
