HAProxy being killed with more that 54,000 connections

Posted by Olly on Server Fault See other posts from Server Fault or by Olly
Published on 2011-01-12T14:18:10Z Indexed on 2011/01/12 14:55 UTC
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ubuntu

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haproxy

I am trying to run HAProxy (1.4.8) on a EC2 machine running Ubuntu 10.04. I need HAProxy to be able to handle many thousands of long-running persistent connections (websockets). With the current setup HAProxy gets killed at around 54,300 connections (roughly).

If I am running HAProxy in the foreground, the only output is "Killed". Am I right in thinking this is the Kernel killing the process? Is this because it is out of resources? Can I increase the resources?

The CPU and memory consumption are low with 50,000 connections, so I don't suspect either of these.

How can I prevent this from happening?

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