Examples of com.kylin.jgroups.performance.LargeState

• com.kylin.jgroups.performance.LargeState
  Tests transfer of large states. Start first instance with -provider flag and -size flag (default = 1MB). The start second instance without these flags: it should acquire the state from the first instance. Possibly tracing should be turned on for FRAG to see the fragmentation taking place, e.g.:

   trace1=FRAG DEBUG STDOUT 

  
  Note that because fragmentation might generate a lot of small fragments at basically the same time (e.g. size1MB, FRAG.frag-size=4096 generates a lot of fragments), the send buffer of the unicast socket in UDP might be overloaded, causing it to drop some packets (default size is 8096 bytes). Therefore the send (and receive) buffers for the unicast socket have been increased (see ucast_send_buf_size and ucast_recv_buf_size below).

  If we didn't do this, we would have some retransmission, slowing the state transfer down. How to build? mvn clean install dependency:copy-dependencies How to run? java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar:log4j-1.2.16.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node1 -props config.xml -provider -size 10000000 java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar:log4j-1.2.16.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node2 -props config.xml -size 10000000 java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar:log4j-1.2.16.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node1 -props config.xml -provider -size 10000000 -delay 1000 java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar:log4j-1.2.16.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node2 -props config.xml -size 10000000 java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar:log4j-1.2.16.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node1 -props config.xml -provider -size 10000000 java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar:log4j-1.2.16.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node2 -props config.xml -size 10000000 -delay 1000 java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar:log4j-1.2.16.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node1 -props config.xml -provider -size 10000000 -provider_fails java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar:log4j-1.2.16.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node2 -props config.xml -size 10000000 java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node1 -props config.xml -provider -size 10000000 java -cp jgroups-3.2.6.Final.jar:jgroups-stu.jar -Djava.net.preferIPv4Stack=true com.kylin.jgroups.performance.LargeState -name node2 -props config.xml -size 10000000 -requester_fails Run results: node2 send state transfer request to coordinator(node1) \|/ node1's getState() method invoked, write via OutputStream \|/ node2's setState() method invoked, read from InputStream

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