Would you mind creating and sending us a Thread Dump? Regards Leon On Thu, Dec 4, 2008 at 8:25 PM, Robert J Morman <[EMAIL PROTECTED]> wrote: > Good afternoon. > > We have a problem with our production tomcat server in that the CPU will > climb after a restart from 1-2% to 100%. The rate of climb corresponds > to the amount of traffic we receive (the more we have, the faster it > climbs). I noticed a couple days ago (by using Lambda Probe), that we > are getting 'rogue' https threads. These are threads that are stuck in > the Service stage for a particular request. I notice that as these > threads become stuck persistently-serviced, the CPU seems to jump about > 6% at a time (for each thread). Once we hit 99-100% CPU, we have about > 15 of these and we are required to restart tomcat (as it's not > responding with much priority). Lmbda Probe notes that there are no > Current Busy threads, even though it shows these as being Serviced. > > Is there a way to get these to time out? > > Specifics: > Tomcat 6.0.16 > Java 1_5_16 > > Conf connection snippets: > > <Connector port="80" protocol="HTTP/1.1" > connectionTimeout="20000" > enableLookups="false" > maxThreads="100" > minSpareThreads="5" > maxSpareThreads="40" > redirectPort="443" /> > > <Connector protocol="org.apache.coyote.http11.Http11NioProtocol" > connectionTimeout="60000" > port="443" minSpareThreads="5" maxSpareThreads="15" > enableLookups="false" disableUploadTimeout="false" > acceptCount="100" maxThreads="100" > scheme="https" secure="true" SSLEnabled="true" > keystoreFile="e:\apache\tomcat6\.keystore" > keystorePass="changeit" > clientAuth="false" sslProtocol="TLS"/> > > Session timeout is set to 30 minutes in web.xml. > > Bob Morman > EMCSA, MCSA > Enterprise Systems Manager > ASM International Headquarters > http://www.asminternational.org > <blocked::http://www.asminternational.org/> > 440/338-5151 x5478 > > The No. 1 reference on metals casting is back with new ways to improve energy > efficiency, productivity and product performance! Read free sample articles > from the all-new ASM Handbook, Volume 15: Casting, and take advantage of > special pre-publication prices before Dec. 15. For more on ASM Handbooks: > http://asmcommunity.asminternational.org/portal/site/www/MatInformation/Handbooks/. >
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