Definitely I would like to�extend�the flow control mechanism�to support something similar as I've done with plugin, so someone can set a maximum messages per second or something similar<br><br><div class="gmail_quote">
2012/7/30 Tim Watson <span dir="ltr"><<a href="mailto:tim@rabbitmq.com" target="_blank">tim@rabbitmq.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Just to add to Emile's comments, I there are a couple of things to
consider here.<br>
<br>
Firstly, it's important to point out that letting the Channel
process mailbox fill up could lead to unexpected and unpredictable
performance characteristics, and doesn't appear to offer anything
that per-connection flow control isn't already doing. Also, creating
an mnesia transaction for each routing operation is likely to
produce an altogether *different* kind of throttling of Rabbit's
performance across a cluster, and probably (in fact, almost
certainly) not the one you intended.<br>
<br>
I would strongly recommend reconsidering this approach. If you're
interested in extending the flow control mechanism to support
alternative measures, then perhaps we should have a collective
conversation about that instead, as Emile is quite right in
suggesting that approach makes more sense.<br>
<br>
Cheers,<br>
Tim<div><div class="h5"><br>
<br>
On 07/28/2012 11:52 AM, F�lix L�pez wrote:
</div></div><blockquote type="cite"><div><div class="h5">Thanks,�
<div><br>
</div>
<div>
<div>I've finally made a plugin to do that. I think what I
wanted to do It cannot be possible with mechanism you sent me
in the email.�</div>
<div><br>
</div>
<div>The plugin is here <a href="https://github.com/flopezluis/rabbitmq-throttling-exchange" target="_blank">https://github.com/flopezluis/rabbitmq-throttling-exchange</a>,
It has a lot to improve and certainly I'm not sure of the
impact of this exchange in the performance of rabbitmq.</div>
<div><br>
</div>
<br>
<div class="gmail_quote">2012/7/24 Emile Joubert <span dir="ltr"><<a href="mailto:emile@rabbitmq.com" target="_blank">emile@rabbitmq.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
On 23/07/12 18:20, F�lix wrote:<br>
> Is there anything similar in rabbitmq?<br>
<br>
Yes, the broker has a connection-based flow control
mechanism - see<br>
<a href="http://www.rabbitmq.com/memory.html#per-connection" target="_blank">http://www.rabbitmq.com/memory.html#per-connection</a><br>
and a blog post that explains further:<br>
<a href="http://www.rabbitmq.com/blog/2012/04/17/rabbitmq-performance-measurements-part-1/" target="_blank">http://www.rabbitmq.com/blog/2012/04/17/rabbitmq-performance-measurements-part-1/</a><br>
<br>
Bear in mind that blocking an Erlang process will lead to a
backlog in<br>
its internal mailbox without slowing down the network. Also,
the<br>
exchange is not a natural control point for bandwidth
limiting, because<br>
an exchange is not a process. A channel would be a more
natural choice.<br>
You may be able to adapt the existing flow control mechanism
to grant<br>
credits based on bandwidth rather than message count.<br>
<span><font color="#888888"><br>
<br>
<br>
-Emile<br>
<br>
</font></span></blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<a href="http://www.linkedin.com/in/flopezluis" target="_blank">http://www.linkedin.com/in/flopezluis</a><br>
<br>
It's easier to ask forgiveness than it is to get permission<br>
<br>
<br>
".....it doesn't matter how many times you fail. It doesn't
matter how many times you almost get it right. No one is going
to know or care about your failures, and either should you. All
you have to do is learn from them and those around you
because...All that matters in business is that you get it right
once. Then everyone can tell you how lucky you are."<br>
--Mark Cuban"<br>
<br>
"Always be the worst guy in every band you're in." If you're the
best guy there, you need to be in a different band. And I think
that works for almost everything that's out there as well." Pat
Metheny<br>
</div>
<br>
<fieldset></fieldset>
<br>
</div></div><pre>_______________________________________________
rabbitmq-discuss mailing list
<a href="mailto:rabbitmq-discuss@lists.rabbitmq.com" target="_blank">rabbitmq-discuss@lists.rabbitmq.com</a>
<a href="https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss" target="_blank">https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss</a>
</pre>
</blockquote>
<br>
</div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><a href="http://www.linkedin.com/in/flopezluis" target="_blank">http://www.linkedin.com/in/flopezluis</a><br><br>It's easier to ask forgiveness than it is to get permission<br>
<br><br>".....it doesn't matter how many times you fail. It doesn't matter how many times you almost get it right. No one is going to know or care about your failures, and either should you. All you have to do is learn from them and those around you because...All that matters in business is that you get it right once. Then everyone can tell you how lucky you are."<br>
--Mark Cuban"<br><br>"Always be the worst guy in every band you're in." If you're the best guy there, you need to be in a different band. And I think that works for almost everything that's out there as well." Pat Metheny<br>