[rabbitmq-discuss] Performance Issue

[Pavel Kogan]

I am playing now with basic.qos setting but I am not seeing 200Hz.
I see 124Hz which is distributed 100 + 24 and not 62 + 62.

Look again:
Channeldeliver / getack10.4.117.105:49571
(1)<http://iweb87.iweb.cortica.com:15672/#/channels/10.4.117.105%3A49571%20-%3E%2010.4.117.189%3A5672%20(1)>
24/s24/s10.4.117.106:61409
(1)<http://iweb87.iweb.cortica.com:15672/#/channels/10.4.117.106%3A61409%20-%3E%2010.4.117.189%3A5672%20(1)>
26/s100/sTotal:50/s124/s
What is recommended value for prefetch_count for maximal throughput?

Thanks,
  Pavle


Thanks,
  Pavel



On Tue, Jan 15, 2013 at 4:51 PM, Matthias Radestock
<matthias at rabbitmq.com>wrote:

> Pavel,
>
>
> On 15/01/13 21:17, Pavel Kogan wrote:
>
>> It have only one queue and two consumers of same queue. The consumers do
>> nothing - only sleep 1 second in 100 threads generated by pool,
>> as if it was unit working at 100/s rate.
>>
>
> So that would give you a maximum rate of 200Hz, which is not that far off
> the rate you are seeing in the management UI. The difference will be
> accounted for by network latency, *especially* if you are using basic.qos
> with a low prefetch count.
>
> Regards,
>
> Matthias.
>
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