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From Claus Ibsen <claus.ib...@gmail.com>
Subject Re: performance Replicated LevelDB vs. SAN
Date Tue, 25 Mar 2014 17:15:18 GMT
There has been numerous fixes and improves for leveldb on the 5.10
branch. So you may want to try building from latest source code and
try with a SNAPSHOT of 5.10.

On Tue, Mar 25, 2014 at 5:55 PM, Oleg Dulin <oleg.dulin@gmail.com> wrote:
> 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)
>
>
>
> --
> Regards,
> Oleg Dulin
> http://www.olegdulin.com
>
>



-- 
Claus Ibsen
-----------------
Red Hat, Inc.
Email: cibsen@redhat.com
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Blog: http://davsclaus.com
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