<p>Aaaah yes cheers Emile - the Erlang 32-bit limit slipped my mind there.</p>
<div class="gmail_quote">On Jul 13, 2011 1:04 PM, "Emile Joubert" <<a href="mailto:emile@rabbitmq.com">emile@rabbitmq.com</a>> wrote:<br type="attribution">> On 13/07/11 12:55, Dan B wrote:<br>>> I should have RTFM a bit more thoroughly.<br>
>> <br>>>>> Thus when RabbitMQ can't recognize your platform, if you actually have 8GB RAM<br>>>>> installed and you want RabbitMQ to throttle producers when the server is using<br>>>>> above 3GB, set vm_memory_high_watermark to 3<br>
>> <br>>> On my server, vm_memory_high_watermark = n results in a watermark of<br>>> 2n for some reason. I've set it to 1.5 (3gb), I'm not sure if Rabbit<br>>> can access all of that though, probably not.<br>
> <br>> <br>> You are certain to run out of memory at some point if you do that.<br>> Unfortunately the Windows Erlang VM is 32bit and limited to 2Gb. Some<br>> versions of Windows support an alternative memory model that may allow a<br>
> suitably patched Erlang VM access to slightly more memory, but I don't<br>> know of anyone succeeding in making it work:<br>> <br>> <a href="http://support.microsoft.com/default.aspx?scid=kb%3BEN-US%3B297812">http://support.microsoft.com/default.aspx?scid=kb%3BEN-US%3B297812</a><br>
> <br>> -Emile<br></div>