On 04/03/18 18:14, Industrious wrote: > Hi Mark, > > Thanks for advice. However, I actually increased it. I was running on > about 80MB Xmx at first when I was on 512-600MB VMs. I did not have > problems for a long time. Eventually, I faced the problem and I > increased it to 220MB and I saw the same picture that the largest part > of the memory is filled with RequestInfo.
That strikes me as odd. The RequestInfo objects are fairly small. They are usually part of a much large group of objects but they should appear separately in any analysis. The number of RequestInfo is limited by maxConnections. > Could you tell me what are these objects for? Take a look at the Javadoc for the version you are using. > Should not they be recycled or disposed of? No. They are re-used across multiple requests allocated to the same Processor. Mark > > 2018-03-01 19:56 GMT+02:00 Mark Thomas <ma...@apache.org>: >> On 24/02/18 18:52, Industrious wrote: >>> Dear All, >>> >>> I am running Tomcat 8 on Ubuntu. After a few days of running >>> successfully my Tomcat's JVM crashes or becomes absolutely unresponsive >>> because of OOME errors similar to this in catalina.out: >> >> <snip/> >> >>> At first I was using GCE micro instance with 600MB of RAM. Soon I >>> started having problems when Linux was killing Tomcat (OOM killer) as it >>> considered its JVM as a candidate for killing or if I specify a lower >>> maximum heap size I would eventually get OOME from JVM. >>> >>> I moved to a GCE small instance which has 1.7GB of RAM but the problem >>> still occurs eventually though a bit later than on the 600MB VM because >>> I somewhat increased the maximum heap size. >> >> <snip/> >> >>> $ less /var/lib/tomcat8/bin/setenv.sh >>> JAVA_OPTS="-Dlog4j.logging.dir=$CATALINA_BASE/logs \ >>> -Dlogging.dir=$CATALINA_BASE/logs \ >>> -Djava.awt.headless=true \ >>> -Xms220M \ >>> -Xmx220M \ >>> -Dsun.java2d.cmm=sun.java2d.cmm.kcms.KcmsServiceProvider \ >>> -Djava.security.egd=file:/dev/./urandom \ >>> -XX:+HeapDumpOnOutOfMemoryError \ >>> -XX:HeapDumpPath=$CATALINA_BASE/logs/java_pid%p.hprof" >> >> >> Looks like you need to increase Xmx and use some of that extra memory >> you paid for. >> >> Mark >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
