[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Shared Transport in JGroups

[bela@jboss.com]

"bstansberry at jboss.com" wrote : 
  | 
  | enable_bundling:
  | 
  | "udp" = true
  | "jbm-control" = false
  | 
  | Need Bela's input here.  I imagine JBM is concerned about latency, which is why they chose "false".  I need to perf test http session replication with bundling on and off and see the difference.  If it's not huge and JBM really needs 'false', I'm personally comfortable with 'false' as a default.
  | 
  | 

Enabling bundling is a huge speedup. This is similar to nagling in TCP. However, if you invoke RPCs, then you should disable it. see http://wiki.jboss.org/wiki/ProblemAndClusterRPCs for details.
Note that you can enable multicasts, but disable unicasts, so RPCs are bundled but individual responses are sent right away. The option is enable_unicast_bundling.

[qoute]

thread_pool.queue_enabled and thread_pool.queue_max_size:

"udp" = false and 100
"jbm-control" = true and 1000

Need Bela's input here. The "udp" stack values came long ago from a JGroups stacks.xml. I'd imagine the JBM values would be more performant.


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