On August 19, 2019 5:27:23 PM UTC, Vinay Singh <vsi...@crunchtime.com> wrote: >We are seeing this intermittent issue in production. The CPU gets >pegged at 50% (2 core CPU) randomly and it never comes back. Only >option is to restart the server. This is how CPU appears from Dynatrace >https://i.stack.imgur.com/7zxZW.png >This is how the thread dump looks when we analyzed through dynatrace. >https://i.stack.imgur.com/6YOm1.png > > >This happens randomly on any day of the week and we could not find a >pattern. >It could happen when servers are under heavy load or not doing much. > >I am not 100% if this is a tomcat defect. Since the stream trace is >from org.apache.coyote.http11.filters.GzipOutputFilter, does tomcat >compression has any role to play here ?
Java version? Tomcat version? OS details? Does a particular resource trigger this? There have been issues in the past with the zip implementation in the JRE. As always, what we really need is a reproducible test case Mark > >We are doing compression via tomcat, not load balancer. >This is our compression settings in server.xml > ><Connector port="8080" >protocol="org.apache.coyote.http11.Http11NioProtocol" > maxPostSize="10485760" URIEncoding="UTF-8" > socket.appReadBufSize="1024" > socket.appWriteBufSize="1024" > selectorPool.maxSelectors="5000" > compression="on" >compressableMimeType="text/html,text/xml,text/plain,text/css,text/javascript,text/json,application/x-javascript,application/javascript,application/json" > SSLEnabled="false" > scheme="https" > secure="true" > proxyPort="443" > maxThreads="500" > relaxedPathChars="|" > relaxedQueryChars="|" > /> ><Connector port="8081" >protocol="org.apache.coyote.http11.Http11NioProtocol" > maxPostSize="10485760" URIEncoding="UTF-8" > socket.appReadBufSize="1024" > socket.appWriteBufSize="1024" > selectorPool.maxSelectors="5000" > compression="on" >compressableMimeType="text/html,text/xml,text/plain,text/css,text/javascript,text/json,application/x-javascript,application/javascript,application/json" > SSLEnabled="false" > scheme="http" > secure="false" > proxyPort="8081" > relaxedPathChars="|" > relaxedQueryChars="|" > /> > > >Thanks for looking at the problem > >Vinay --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
