Failed to create poller with specified size

It had always bugged me that I got this warning on my OS X, MacBook Pro development system. (Well, it’s really an INFO, not a WARN but it bugged me nonetheless.)

Apr 8, 2009 4:10:55 PM org.apache.coyote.ajp.AjpAprProtocol init
INFO: Initializing Coyote AJP/1.3 on ajp-8009

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Apr 8, 2009 4:10:58 PM org.apache.tomcat.util.net.AprEndpoint allocatePoller
INFO: Failed to create poller with specified size of 8192


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Apr 8, 2009 4:10:58 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 2703 ms

I never saw this issue on my CentOS production servers so I figured it must be a BSD thing. It any rate, I recently tracked down a solution: add a pollerSize attribute to Tomcat’s connector element in server.xml.

<Connector
  pollerSize="1024"
  port="8009"
  URIEncoding="UTF-8"
  enableLookups="false"
  redirectPort="8443"
  maxPostSize="104857600"
  protocol="AJP/1.3" />

For a full listing of my server.xml, see UTF8 JDBC on Tomcat.

I suppose I could have mucked with OS X’s limits but somehow this solution seemed less problematic. I’m not serving to the web from my laptop so I feel comfortable lowering the pollerSize. Besides, I had two years of history in which a problem never arose even though tomcat failed to create the poller… I’ve had a couple of months now in which the poller has been created and works fine.

Red Leopard