anonymous wrote : NW - 10 mbit but the tests are just on my local machine 
  | 


10Mpbs ? You're going to get 1MB/sec throughput max.

If you run only on the local box, set UDP.bind_addr to 127.0.0.1, to circumvent the 
NIC entirely. Also add a multicast route that actually points to your loopback device.
I suggest you take the NIC down for the duration of the tests to make sure you don't 
send anything via the 10Mbps link.

Also, I suggest to set UDP.loopback=true.

anonymous wrote : 
  | - will have gigabit within the next few weeks with dual 3.0ghz xeon machines if 
that will make a big impact?

A huge difference ! JGroups is CPU-bound with 1 CPU, with 2 CPUs I saw a huge diff in 
my tests. I was actually able to almost saturate the network (9MB/sec on a 100Mbps 
switched ethernet), with 10K msgs.
I haven't tested GB ethernet yet, but the numbers there should actually be even better.
Here's another one: you may want to adjust the compression level in COMPRESS (9 = 
best).


anonymous wrote : 1 pub - 1 sub
  | 678 messages/second at 10,000 text messages sent
  | 
  | 1 pub - 2 sub
  | 460 messages/second at 10,000 text messages sent
  | 
  | 1 pub - 3 sub
  | 345 messages/second at 10,000 text messages sent


I would expect about the same msg rate. What happens though,  is that you could have a 
lot of retransmissions (which are unicast). Can you run tcpdump/snoop/ntop to see what 
your traffic is ? I'd expect mostly multicast; if you have a large number of unicast 
UDP traffic, then you have too many xmits.


anonymous wrote : For Object messages using my implementation of the ObjectMessage 
(all of which use the fc-fast.xml stack)
  | These messages are a series of state vectors packed in a java.util.Arraylist 
(written to a file as an ObjectOutputStream each fille Arraylist produced 1.8kb of 
data)

Same test, with ObjectMessages ? I have to conclude it is serialization then. Can you 
do some intelligent marshalling of the vectors, and then use BytesMessage ?

Bela

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