[rabbitmq-discuss] Rabbit crash, new persister

Øyvind Tjervaag oyvind at tjervaag.com
Sat Jun 19 11:38:50 BST 2010

Thanks John! I've been looking for more examples of what you can do with the config file.. Is there a definitive list somewhere? I suppose I have to go and dig in the Erlang/OTP docs to find it? Will try out the ones you sent though, can't hurt to squeeze a bit more performance out of my setup.

Don't have any spesific numbers, and it might not be a fair comparison, but so far my bottleneck seems to be WebsphereMQ and not rabbit so far..

I don't have that much more code that what can be found in the examples in the docs. But I don't mind helping out if you hit any problems. Don't know if I would be able to help, but I will try my best ;)

thanks again,

On Jun 18, 2010, at 10:23 PM, John Apps wrote:

> I have been using the Java programs which are available with the kit. .NET is something I have yet to try and really should start.
> One word of warning: since Erlang is 32-bit mode only, you will run out of memory quite quickly with certain tests, leading invariably to a crash. You probably already know this, but in case you did not...
> If you have a handy little .NET example lying around, I would love to give a go. However, I will download the .NET kit and give it a whirl.
> I have the following lines in my rabbitmq.config file:
> [
>         {kernel,
>                 [{inet_dist_listen_min, 65535},
>                  {inet_dist_listen_max, 65535},
>                  {inet_default_listen_options,
>                         [{nodelay,true}, {sndbuf,65535}, {recbuf,65535}]},
>                  {inet_default_connect_options, [{nodelay,true}]}
>                 ]
>         },
>         {os_mon,
>                 [{start_cpu_sup,true},
>                  {start_disksup,false},
>                  {start_memsup, false},
>                  {system_memory_high_watermark, 0.9}
>                 ]
>         },
>         {rabbit, [{vm_memory_high_watermark, 0.4}]},
>         {rabbit, [{memory_alarms, true}]},
>         {mnesia, [{dump_log_write_threshold, 1000}]},
>         {rabbit, []}
> ].
> The important ones are the vm_memory_high_watermark and the memory_alarms true. I have found that using the maximum sndbuf and recbuf give me the best performance on Windows 7 X64.
> 2010/6/18 Øyvind Tjervaag <oyvind at tjervaag.com>
> Ah, neat, wich also remind me I have to start looking into 1.8.0. Are you using the .NET client lib, and did you have to change a lot of you code to get it working?
> /Øyvind
> On Jun 18, 2010, at 8:41 PM, John Apps wrote:
> > I define the RABBITMQ_* variables thus:
> >
> > RABBITMQ_BASE=C:\AMQP\RabbitMQ\rabbitmq_server-1.8.0
> >
> > which leads to log and DB being defined under RABBITMQ_BASE. Good to have as I am running 3 different versions of RabbitMQ right now, 1.7.1, 1.7.2 and 1.8.0. No need, really, it was just so easy to setup.
> -- 
> ---
> John Apps
> (49) 171 869 1813

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