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

[timfox]

"jmesnil" wrote : 
  | It seems the bottleneck is the generation of the UUID.
  | 
  | When using UUID.randomUUID(), the implementation uses a SecureRandom.
  | If I use Random instead and creates the UUID with new UUID(rand.nextLong(), nextLong(), the perf increases significantely.
  | 

I don't think we should be using random UUIDs at all, since they're... well random (so can clash).

Instead I think we should use a variant 2 UUID.

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