Hi,<br><br>Thanks for the reply.<br><br>Unfortunately it has to be windows as our company does not support non windows.<br><br>As to our usage.<br><br>We're processing messages from a stock exchange and setup a routing key containing of "level.isin"<br>
where the level can be level 1 or level 2 depending on the type of information and the isin is the stock.<br><br>"Clients" can then bind to a specific routing key to get just the information they need.<br>I'm thus using RabbitMQ as a way to transfer data and demultiplex the information that comes through.<br>
I could use RabbitMQ just for the message transfer and then do the demultiplexing myself but I thought I'd take a shortcut.<br><br>On the configuration. Is there some documentation on what or how RabbitMQ can be configured.<br>
Currently I can't find a configuration file anywhere so don't know where/how to start.<br><br>Thanks again<br><br>Roaan<br><br><div class="gmail_quote">On Thu, May 13, 2010 at 11:45 AM, Matthew Sackman <span dir="ltr"><<a href="mailto:matthew@lshift.net">matthew@lshift.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi Roaan,<br>
<div class="im"><br>
On Thu, May 13, 2010 at 06:57:19AM +0200, Roaan Vos wrote:<br>
> We've been having problems with RabbitMQ just "hanging".<br>
> This is with the default installation, i.e no configuration.<br>
<br>
</div>It's likely you've run out of memory and Rabbit's raised the<br>
channel.flow flag, preventing you from publishing more messages to it.<br>
Check the logs for memory high watermark warnings. This issue is fixed<br>
with the new persister branch as messages can be sent to disk and<br>
forgotten from RAM.<br>
<div class="im"><br>
> Can any one help with a configuration file or point me to where I can find<br>
> information on how to configure RabbitMQ.<br>
<br>
</div>There's not a great deal you can do to fix this issue other than<br>
compiling from source with the new persister branch (bug21673), or<br>
installing much more memory.<br>
<div class="im"><br>
> We're running RabbitMQ 1.7.2 on a single node on Windows 2008 Server.<br>
<br>
</div>Windows is a bad idea because there is no 64-bit Erlang available. As<br>
such, it doesn't matter how much RAM you have installed, only 2GB will<br>
be available to Rabbit. If you need to use Windows then your only<br>
solution will be to use the new persister branch (but compiling under<br>
Windows is involved to say the least - you'll need to start with<br>
cygwin). Really we'd recommend a Linux server here.<br>
<br>
That said, all my assumptions may be totally wrong - how many messages<br>
(and what size) are you buffering in Rabbit? Are you correctly acking<br>
messages when you're consuming them?<br>
<div class="im"><br>
> Also we're aiming on having about 10 thousand clients (connections) each<br>
> with their own queue. (Using Topics)<br>
> Is this feasable?<br>
<br>
</div>Connections - yes. You will probably need to raise the process limit -<br>
about a million should be fine. Under non-Windows this would involve<br>
putting SERVER_START_ARGS="+P 1048576" into the rabbitmq.conf file<br>
(which normally lives under /etc/rabbitmq). However, because of lack of<br>
features of Windows BAT files, there is no such .conf file, so you need<br>
to set the environment variable RABBITMQ_SERVER_START_ARGS and set the<br>
value to "+P 1048576". That should do the trick.<br>
<br>
Topic exchanges are inefficient in our current implementation. It's not<br>
normally necessary to use them either - unless your domain of routing<br>
keys really is unbounded. Can you describe more about your use case and<br>
we should be able to advise you further.<br>
<font color="#888888"><br>
Matthew<br>
</font><div><div></div><div class="h5"><br>
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