[rabbitmq-discuss] |Spam| question about rabbitmq TPS

Thu Mar 29 14:17:04 BST 2012

are you using persistent messages?

2012/3/29 陈鸿钦 <chen-hongqin at 163.com>

> This is about my master paper which is related with availability, and I
> use rabbitmq as the middle-ware component. So I am trying to find how can
> cause this problem. And my current answer I guess is that it is caused by
> the OS cache. Cache hit ratio is high at the very start and becomes lower
> because of the page replacement after more and more requests come. And the
> other reason maybe is messages are orderly sufficiently for the disk to
> write at start. But i am not sure if the rabbitmq has do some optimals for
> that?
> At 2012-03-29 18:23:33,"Alexis Richardson" <alexis at rabbitmq.com> wrote:
>
> Hi,
>
> There are lots of possible reasons for this, including that "measuring
> anything accurately is hard".
>
> What problem are you trying to solve?
>
> alexis
>
>
> 2012/3/26 陈鸿钦 <chen-hongqin at 163.com>
>
>>   hi,
>> can you tell me why TPS is too high at first and sometimes maybe even
>> more higher(maybe over 30000/s) when I send messages to rabbitmq cluster
>> concurrently? thanks!
>>
>>
>>
>> Some infos about this test:
>> 1. all the messages are same and each message size is 1kb.
>>  2. 300 queues created by multiple Producers at start and messages sent
>> to the queues are random
>> 3. All messages are persistent and queues are all durable
>> 4. 3 nodes consists of a rabbitmq cluster and all the nodes are in the
>> same host but different ports
>> the host info:
>>
>> JAVA version****
>>
>> Java version "1.6.0_12" Java(TM) SE Runtime Environment (build
>> 1.6.0_12-b04)****
>>
>> JAVA VM
>>
>> Java HotSpot(TM) 64-Bit Server VM (build 11.2-b01, mixed mode)****
>>
>> CPU****
>>
>> Intel(R) Xeon(R) CPU E5504 @2.00GHz****
>>
>> number of cores
>>
>> 8
>>
>> memory****
>>
>> 33011192kb****
>>
>> Erlang VM
>>
>> Erlang R15B (erts-5.9) [source] [64-bit] [smp:8:8] [async-threads:0]
>> [hipe] [kernel-poll:false]****
>>
>> RabbitMQ version
>>
>> Release 2.7.1****
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> rabbitmq-discuss mailing list
>> rabbitmq-discuss at lists.rabbitmq.com
>> https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
>>
>>
>
>
>
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