[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Optimisations: A couple of low hanging fruits going for grab

[timfox]

There are a couple of areas for valuable optimisation if anyone would like to take them:

1)

One is that generating JMS message ids before sending can slow things down significantly (maybe 5%??).

I noticed that if i set producer.setDisableMessageID(true) on the producer before sending performance increases significantly

I am sending 1k non persistent bytes messages from client one my laptop to server on another machine with gigabit lan and i can get about 45K msgs / sec :), but this drops to about 40K or less with disablemessageid set to false

I suspect this is due to the following in JBossMessageProducer:

  | String id = UUID.randomUUID().toString();
  | bm.setJMSMessageID("ID:" + id);
  | 

which involves generation and two (?) string copies.

What we need is a way of generating the id without doing String copies - you could take the same UUID algorithm and apply it directly to a SimpleString instance (with the id already included at the beginning).

2) Text messages. Currently text message bodies are encoded using UTF-8 with the encoding methods on the MINA IoBuffer class. This is slow (as mentioned in another thread).

I'm sure there is great scope to speed this up.



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