"bela" wrote :
|
| 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.
|
|
Ok - I ran the same tests on some faster machines using a gigabit ethernet. Tests
were run on a dual 64-bit AMD Opteron machine running Suse Linux with JDK 1.4.2. The
numbers increased a lot but you can see the numbers still degrade with each additional
subscriber. Here are the numbers I got:
Text messages (10000 sent)
-1300 msg/sec with 1 pub - 1 sub
- 915 msg/sec with 1 pub - 2 sub
- 780 msg/sec with 1 pub - 3 sub
Object messages (10000 sent)
- 410 msg/sec with 1 pub - 1 sub
- 306 msg/sec with 1 pub - 2 sub
- 243 msg/sec with 1 pub - 3 sub
So yes the object messages still need to be optimized perhaps with better techniques
but even if they were optimized I would start out with a higher rate than 410 msg/sec
but it would still decrease with each subscriber and that's the main limitation right
now. I can try some tcpdumps or use ethereal to try and see what's going on
network-wise.
"Bela" wrote :
| Here's another one: you may want to adjust the compression level in COMPRESS (9 =
best).
| Bela
Tried that - it didn't make much difference. I did notice a bug however when I put
the compression to 0. Here's that output when that's the compression value:
ERROR 10:57:43,691 [Connection Management Thread] (GroupConnection.java:194) -
Dispatching failed
[java] java.lang.IllegalArgumentException: java.io.StreamCorruptedException
[java] at org.jgroups.Message.getObject(Message.java:218)
[java] at sljms.GroupConnection.dispatch(GroupConnection.java:239)
[java] at sljms.GroupConnection.run(GroupConnection.java:188)
[java] at java.lang.Thread.run(Thread.java:534)
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