In http://tomcat.apache.org/tomcat-7.0-doc/config/http.html you can read about pollerThreadCount and useComet flags for the APR implementation. You don't need Comet unless you applications specifically are using it, most likely they are not.
Filip ----- Original Message ----- > From: "Jeffrey Janner" <jeffrey.jan...@polydyne.com> > To: "Tomcat Users List" <users@tomcat.apache.org> > Sent: Friday, July 13, 2012 9:53:14 AM > Subject: Poller & CometPoller general questions > > > > > I'm more curious here than there being a problem. > > Are the Poller & CometPoller threads necessary for Tomcat operation? > If not, how to turn them off, and do I want to turn them off. > > Here's my scenario: > > Tomcat 6.0.33 with APR on Windows Server 2008 (regular and R2). > > Fairly normal server.xml, with generic <connector> implementation, > i.e., not explicitly specifying the protocol: > > <!--APR library loader. Documentation at /docs/apr.html --> > > <Listener className="org.apache.catalina.core.AprLifecycleListener" > SSLEngine="on" /> > > <Connector address="172.16.1.1" port="80" maxHttpHeaderSize="8192" > > maxThreads="10" enableLookups="false" redirectPort="443" > acceptCount="100" > > connectionTimeout="20000" disableUploadTimeout="true" /> > > <Connector address="172.16.1.1" port="443" maxHttpHeaderSize="8192" > > maxThreads="100" enableLookups="false" acceptCount="100" > > connectionTimeout="20000" disableUploadTimeout="true" > > scheme="https" secure="true" SSLEnabled="true" > > SSLCertificateFile="path to server.crt" > > SSLCertificateKeyFile=" path to server.key" > > SSLCertificateChainFile=" path to _chain.crt" > > SSLPassword="password" /> > > Web.xml is set up to force everything to HTTPS: > > <user-data-constraint> > > <transport-guarantee>CONFIDENTIAL</transport-guarantee> > > </user-data-constraint> > > > > So Tomcat starts up and creates, in my case, 32 poller threads, 8 > poller and 8 cometpoller for each connector. > > Now, I know these just sit around waiting on AprEndpoint$Poller, > basically doing nothing and really causing no harm, other than > taking up some threads out of my available threadpool. > > I pretty sure we don’t use Comet, so I'd like to turn those off, but > it's not clear in the documentation that I can, only looks like > there are controls for the NIO connector. > > What, if anything, would the standard Poller threads be used for? > > Since everything gets forwarded to HTTPS, the HTTP poller threads > seam exceptionally useless. > > > > Jeffrey Janner > > Sr. Network Administrator > > jeffrey.jan...@polydyne.com > > PolyDyne Software Inc. > > Main: 512.343.9100 > > Direct: 512.583.8930 > > > > cid:image002.png@01CC0FB7.4FF43CE0 > > > > Speed, Intelligence & Savings in Sourcing > > > > > __________________________________________________________________________ > > Confidentiality Notice: This Transmission (including any attachments) > may contain information that is privileged, confidential, and exempt > from disclosure under applicable law. If the reader of this message > is not the intended recipient you are hereby notified that any > dissemination, distribution, or copying of this communication is > strictly prohibited. > > If you have received this transmission in error, please immediately > reply to the sender or telephone (512) 343-9100 and delete this > transmission from your system. > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
