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POMaximum concurrent users for JSF2?
 

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    <p>I am working on a Java Web Application, using the following frameworks : Spring 3.1, JSF 2.1.26 and RichFaces 4.3.3. The whole app is running in the Amazon Cloud under medium.m1 instances (2 - 2.4 Ghz single core), with a Tomcat 7.</p> <p>My customer asked questions about the performances of the web application, and about the number of concurrent users that can be handled on the same server. He gave me a report showing that a servlet with about the same hardware than the Amazon medium one is able to serve about 1000 requests per seconds (40KB page) : <a href="https://www.webperformance.com/library/reports/windows_vs_linux_part1/" rel="nofollow">https://www.webperformance.com/library/reports/windows_vs_linux_part1/</a></p> <p>I took a classic page with header/footer, data table, sort/search/filters/data scroller... (80KB). I removed the database, the filters (security, etc., except JSF one) and kept 20 visible rows. Without any load, that page takes about 300 ms to be loaded.</p> <p>When I executed the load test for my application, I realize that it can only serve 20 requests per second before the request/response time exceeds the 1000 ms. Can you tell me if this is a normal behavior? I can understand a JSF page is longer to build than a simple servlet one, but not being able to serve more than 20 requests, while the servlet can serve 1 000 is puzzling.</p> <p>Is there any standard benchmark for a typical JSF application? If you think I have optimization problem, can you tell me where I can search?</p> <p>Thanks in advance for your answer!</p>
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    1. CODid you set `javax.faces.FACELETS_REFRESH_PERIOD` to `-1` for production?
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    2. COIndeed, javax.faces.FACELETS_REFRESH_PERIOD is -1. I also set com.sun.faces.validateXml and com.sun.faces.verifyObjects to false, and com.sun.faces.numberOfViewsInSession and com.sun.faces.numberOfLogicalViews to 1
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