MERGE2 slows down traffic
-------------------------
Key: JGRP-19
URL: http://jira.jboss.com/jira/browse/JGRP-19
Project: JGroups
Type: Bug
Environment: JGroups 2.2.8 (CVS Jan 6 2005)
Reporter: Bela Ban
Assigned to: Bela Ban
Priority: Minor
Fix For: 2.2.8
Look into why max and avg values for a stack with MERGE2 are slower than for a
stack without MERGE2
<config>
<TCP start_port="7800" bind_addr="192.168.0.57" loopback="true"/>
<TCPPING timeout="3000" initial_hosts="192.168.0.57[7800]" port_range="3"
num_initial_members="3"/>
<MERGE2 min_interval="1500" max_interval="3000" />
<FD timeout="10000" max_tries="4"/>
<VERIFY_SUSPECT timeout="5500" down_thread="false" up_thread="false"/>
<pbcast.NAKACK gc_lag="100" retransmit_timeout="600,1200,2400,4800"/>
<pbcast.STABLE stability_delay="1000" desired_avg_gossip="20000"
down_thread="false" max_bytes="0" up_thread="false"/>
<pbcast.GMS print_local_addr="true" join_timeout="5000"
join_retry_timeout="2000" shun="true"/>
</config>
Before your Fix: Version 2.2.8
Average receiving time(in milliseconds): 1106
Max reciving time(in milliseconds: 3266
Min reciving time(in milliseconds: 0
After your Fix: Latest from Head
Average receiving time(in milliseconds): 342
Max reciving time(in milliseconds: 1250
Min reciving time(in milliseconds: 0
<config>
<TCP start_port="7800" bind_addr="192.168.0.57" loopback="true"/>
<TCPPING timeout="3000" initial_hosts="192.168.0.57[7800]" port_range="3"
num_initial_members="3"/>
<FD timeout="10000" max_tries="4"/>
<VERIFY_SUSPECT timeout="5500" down_thread="false" up_thread="false"/>
<pbcast.NAKACK gc_lag="100" retransmit_timeout="600,1200,2400,4800"/>
<pbcast.STABLE stability_delay="1000" desired_avg_gossip="20000"
down_thread="false" max_bytes="0" up_thread="false"/>
<pbcast.GMS print_local_addr="true" join_timeout="5000"
join_retry_timeout="2000" shun="true"/>
</config>
Before your Fix: Version 2.2.8
Average receiving time(in milliseconds): 36
Max reciving time(in milliseconds: 219
Min reciving time(in milliseconds: 0
After your Fix: Latest from Head
Average receiving time(in milliseconds): 29
Max reciving time(in milliseconds: 109
Min reciving time(in milliseconds: 0
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