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

Thu Mar 29 15:53:39 BST 2012

try it without persistence and see what graphs you get..?

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

> yes, all the messages are persistent
>
>
> 在 2012-03-29 21:17:04，"Alexis Richardson" <alexis at rabbitmq.com> 写道：
>
> 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
>>>
>>>
>>
>>
>>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rabbitmq.com/pipermail/rabbitmq-discuss/attachments/20120329/dd516826/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/png
Size: 24610 bytes
Desc: not available
URL: <http://lists.rabbitmq.com/pipermail/rabbitmq-discuss/attachments/20120329/dd516826/attachment.png>