1. Deploying Tomcat Clusters in an Advanced Blackboard TM Environment Speaker: Steve Feldman Director, Software Performance Engineering and Architecture [email_address]

9. Visual Look at a Tomcat Cluster Traffic is directed by the Web Server like a software load balancer Nodes know little about there partners Recommend 1 node Per Core Web Server Instance Node 1 Node 2 Node N

12. Load-Balanced and Clustered Nodes Hardware or Software Load Balancer Cluster Load-Balanced Nodes unaware of each other. Nodes aware of each other. Web Server Instance Node 1 Node 2 Node N Web Server Instance Node 1 Node 2 Node N

19. Example Workers.Properties # One virtual worker worker.list=loadbalancer # Configure the virtual worker as a load balancer worker.loadbalancer.type=lb worker.loadbalancer.balanced_workers=tomcat1,tomcat2 worker.loadbalancer.method=Request # Attempt to worker.loadbalancer.sticky_session=1 # Actual workers, not available directly worker.tomcat1.port=8009 worker.tomcat1.host=localhost worker.tomcat1.type=ajp13 worker.tomcat1.lbfactor=50 worker.tomcat2.port=8209 worker.tomcat2.host=localhost worker.tomcat2.type=ajp13 worker.tomcat2.lbfactor=50

22. Advanced Feature: Setting Up QOS Models Change JKMount **JK Mount says /webapps/* but can be changed to any single webapp if you choose.

23. Example Benchmark Statistics

24. Example Benchmark Statistics 20343 Sessions/HR 51 UPL/Second 1,145,440 Bytes/Second 145,287 Transactions 14913 Sessions/HR 33 UPL/Second 695,319 Bytes/Second 94,181 Transactions 8212 Sessions/HR 22 UPL/Second 488,168 Bytes/Second 54,049 Transactions R7.1 High-Level R3 (Workload of 360 Possible Concurrent Simulations Learning System/Community System) R2 (Workload of 240 Possible Concurrent Simulations Learning System/Community System) R1 (Workload of 120 Possible Concurrent Simulations Learning System/Community System) Workload 24034 Sessions/HR 65 UPL/Second 1,329,037 Bytes/Second 157,629 Transactions (6-Nodes) 18455 Sessions/HR 50 UPL/Second 1,102,667 Bytes/Second 130,811 Transactions 17288 Sessions/HR 42 UPL/Second 901,103 Bytes/Second 118,754 Transactions 16063 Sessions/HR 45 UPL/Second 968,128 Bytes/Second 106,659 Transactions (4-Nodes) 13341 Sessions/HR 34 UPL/Second 729,616 Bytes/Second 90,353 Transactions 12459 Sessions/HR 31 UPL/Second 640,958 Bytes/Second 87,433 Transactions 10455 Sessions/HR 25 UPL/Second 544,673 Bytes/Second 59,239 Transactions (2 Nodes) 8080 Sessions/HR 22 UPL/Second 480,824 Bytes/Second 53,780 Transactions 7238 Sessions/Hr 19 UPL/Second 311,656 Bytes/Second 51,888 Transactions R7.1 HL Clustered R7.1 Mid-Level R7.1 Entry-Level

25. Example Benchmark Statistics 20207 Sessions/Hr 47 UPL/Second 1,014,189 Bytes/Sec 130,907 Transactions (3 Nodes) 14668 Sessions/Hr 32 UPL/Second 676,802 Bytes/Second 96,742 Transactions (2 Nodes) 12974 Sessions/Hr 35 UPL/Second 735,846 Bytes/Second 84,970 Transactions R7.1 High-Level R9 (Workload of 600 Possible Concurrent Simulations Full Academic Suite) R8 (Workload of 400 Possible Concurrent Simulations Full Academic Suite) R7 (Workload of 200 Possible Concurrent Simulations Full Academic Suite) Workload 27997 Sessions/Hr 71 UPL/Second 1,527,433 Bytes/Sec 181,121 Transactions (6 Nodes) 23056 Sessions/Hr 63 UPL/Second 1,196,553 Bytes/Sec 149,709 Transactions 12652 Sessions/Hr 25 UPL/Second 451,975 Bytes/Second 64,289 Transactions 24034 Sessions/Hr 65 UPL/Second 1,392,037 Bytes/Sec 157,629 Transactions (4 Nodes) 18857 Sessions/Hr 53 UPL/Second 1,157,486 Bytes/Second 118,353 Transactions 11908 Sessions/Hr 34 UPL/Second 668,189 Bytes/Second 77,553 Transactions 13804 Sessions/HR 36 UPL/Second 763,955 Bytes/Second 90,941 Transactions (4 Nodes) 12548 Sessions/Hr 33 UPL/Second 728,082 Bytes/Second 84,004 Transactions 5721 Sessions/Hr 13 UPL/Second 275,672 Bytes/Second 37,313 Transactions R7.1 HL Clustered R7.1 Mid-Level R7.1 Entry-Level

28. Questions?