[rabbitmq-discuss] beam instances and growing memory usage

Sat Nov 17 02:14:01 GMT 2007

Hey gang,

When we did a complete site restart on Tuesday night, Wednesday worked  
flawlessly.  We rebuilt the cluster (disk based nodes) and created a  
total of 7 brokers on the box.  When I was watching the instances on  
Wednesday, each instance was taking up about 0.1% of the server ram,  
according to top.

I checked yesterday (Thursday) and each instance was taking 2.0% :

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
11093 root      16   0  341m 323m 1772 S   33  2.0 132:21.11 beam
11038 root      16   0  341m 322m 1772 R   26  2.0 129:54.36 beam
11142 root      16   0  340m 323m 1776 S   23  2.0 132:18.13 beam
11230 root      16   0  340m 321m 1772 S   18  2.0 126:56.12 beam
11186 root      16   0  340m 322m 1776 S    8  2.0 131:59.12 beam
10683 root      16   0  335m 318m 1772 S    2  2.0 128:45.69 beam
10729 root      16   0  341m 322m 1772 S    1  2.0 129:16.77 beam

I just looked now (Friday) and it's taking 2.9%:

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
10729 root      16   0  483m 462m 1792 S   48  2.9 183:10.47 beam
11230 root      17   0  487m 468m 1792 R   36  2.9 312:12.13 beam
11038 root      16   0  490m 471m 1792 S   17  2.9 321:37.75 beam
11093 root      16   0  491m 472m 1792 S    2  2.9 332:11.46 beam
10683 root      16   0  487m 466m 1792 S    1  2.9 311:57.63 beam
11142 root      16   0  492m 472m 1792 S    1  2.9 348:10.30 beam
11186 root      16   0  485m 466m 1792 S    1  2.9 249:32.93 beam

Durable is set to false - so it doesn't appear that things should be  
persisting anywhere.

Any ideas why it'd be growing over time?

--
Matt Darling
Director, Server Engineering
Meez
182 2nd Street, 5th Floor
San Francisco, CA 94105
(m) 415.505.4623
matt at corp.meez.com

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