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From Oleg Dulin <>
Subject Re: performance Replicated LevelDB vs. SAN
Date Tue, 25 Mar 2014 16:55:17 GMT
I am running a similar test.

Replicated LevelDB, 3 Zookepers, 3 AMQ brokers with local_mem sync, I 
am publishing messages on a queue using one thread, and taking them off 
that queue on another thread.

Performance is abysmal, 1700 messages or so go out pretty quick, but 
then it pauses every 50 messages or so.

The settings are mostly taken from the sample Replicated LevelDB configuration.

What gives ?

Any input is greatly appreciated.

On 2014-02-14 20:26:41 +0000, shippers said:

> I'm testing with ActiveMQ Replicated too (latest SNAPSHOT build) and seeing
> similar problems with stability and reliability.  Performance-wise, it
> depends on the messaging pattern, number of pubs / subs, message size, and
> transaction size.  Also, very dependent on network speed and local disk
> speed.
> Can you describe your testing env?  Size of messages?  # of clients pub and
> sub?  Network speed?
> I'm running a 3 node ActiveMQ quorum_mem and 3 node Zookeeper.
> Example test, 1 pub and 1 sub client running on different hardware, 4k
> message size, persisted messages, not using transactions, 10G network,
> virtual hardware box of 2 CPUs and 8 GIGs memory.
> ~900 msgs/per sec steady state (pub / sub running normally, keeping up with
> each other)

Oleg Dulin

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