[rabbitmq-discuss] memory usage reporting

Wed Apr 24 21:49:46 BST 2013

R16B seems to behave the same way R15B03 does:

Status of node 'rabbit at p1-amqp-j101' ...
[{pid,21245},
 {running_applications,
     [{rabbitmq_management_visualiser,"RabbitMQ Visualiser","0.0.0"},
      {rabbitmq_management,"RabbitMQ Management Console","0.0.0"},
      {rabbitmq_web_dispatch,"RabbitMQ Web Dispatcher","0.0.0"},
      {webmachine,"webmachine","1.9.1-rmq0.0.0-git52e62bc"},
      {mochiweb,"MochiMedia Web Server","2.3.1-rmq0.0.0-gitd541e9a"},
      {rabbitmq_management_agent,"RabbitMQ Management Agent","0.0.0"},
      {rabbit,"RabbitMQ","3.0.4"},
      {mnesia,"MNESIA  CXC 138 12","4.8"},
      {os_mon,"CPO  CXC 138 46","2.2.11"},
      {inets,"INETS  CXC 138 49","5.9.4"},
      {amqp_client,"RabbitMQ AMQP Client","0.0.0"},
      {xmerl,"XML parser","1.3.3"},
      {sasl,"SASL  CXC 138 11","2.3.1"},
      {stdlib,"ERTS  CXC 138 10","1.19.1"},
      {kernel,"ERTS  CXC 138 10","2.16.1"}]},
 {os,{unix,linux}},
 {erlang_version,
     "Erlang R16B (erts-5.10.1) [source] [64-bit] [smp:4:4] [async-threads:30] [hipe] [kernel-poll:true]\n"},
 {memory,
     [{total,15478231776},
      {connection_procs,92186808},
      {queue_procs,16649120},
      {plugins,465008},
      {other_proc,6397291},
      {mnesia,2538008},
      {mgmt_db,24607160},
      {msg_index,386144},
      {other_ets,3307440},
      {binary,15285217656},
      {code,21554477},
      {atom,801697},
      {other_system,24120967}]},
 {vm_memory_high_watermark,0.4},
 {vm_memory_limit,13496687001},
 {disk_free_limit,1000000000},
 {disk_free,21794127872},
 {file_descriptors,
     [{total_limit,130970},
      {total_used,1828},
      {sockets_limit,117871},
      {sockets_used,1826}]},
 {processes,[{limit,1048576},{used,20871}]},
 {run_queue,0},
 {uptime,329}]
...done.

----- Original Message -----
From: "Matthias Radestock" <matthias at rabbitmq.com>
To: "Kyle O'Donnell" <kyleo at 0b10.mx>
Cc: "Discussions about RabbitMQ" <rabbitmq-discuss at lists.rabbitmq.com>
Sent: Wednesday, April 24, 2013 2:48:11 PM
Subject: Re: [rabbitmq-discuss] memory usage reporting

Kyle,

On 24/04/13 18:49, Kyle O'Donnell wrote:
> The difference is actually that my application finished starting
> using rabbit with R14 whereas with R15 my application didn't get to
> start because rabbit had reached the high watermark.

I see. There could be some sort of feedback loop between your app and 
rabbit, where some behaviour difference in the underlying Erlang VM gets 
amplified.

> Rabbit is not the first erlang app I've seen to use large amounts of
> Virtual Memory when used with R15.  I am still leaning more towards
> R15, but haven't found any proof yet.

Give R16B a try.

Regards,

Matthias.