Solaris environment is.... SunOS ********** 5.10 Generic_127127-11 sun4v sparc SUNW,SPARC-Enterprise-T5120
System = SunOS Node = ********** Release = 5.10 KernelID = Generic_127127-11 Machine = sun4v BusType = <unknown> Serial = <unknown> Users = <unknown> OEM# = 0 Origin# = 1 NumCPU = 64 -----Original Message----- From: André Warnier [mailto:a...@ice-sa.com] Sent: 09 September 2011 10:25 To: Tomcat Users List Subject: Re: Tomcat 5.5.27 - Solaris 10 - Tomcat process starts additional copies of itself with only 1 thread and no CPU Intriguing. For a complement of information : - what is the exact platform ? - is Tomcat started via jsvc ? - as a matter of fact, *how* is the "main" Tomcat being started ? What does the command "netstat -pan | grep LISTEN" show when you have such multiple copies running ? (the form of the command will depend a bit on the platform; the command above, under Linux, shows the ports on which processes are listening, and the corresponding PID's and maybe program name) Dave Stubbs wrote: > We're experiencing a problem on both production and test systems that > has only started to occur in the last few weeks (no new version of any > software have been put live to anyone's knowledge) that has us quite stumped. > > > > We are seeing tomcat starting up additional copies of itself, each new > copy is allocating a chunk of storage, it only starts 1 thread, > nothing gets written to any logs and no CPU is being listed as having been used. > > This keeps happening, and if it's not monitored the system memory all > gets taken up and we start to get SIGBUS errors. > > We've tried turning all logging on, there don't appear to be any > software related events at the heart of the issue, and we can't see > any system triggers. > > When we list the system tasks we see that the ghost process PPID is > the same as the PID of the still running main tomcat instance. Here is > list of what happened when it wasn't picked up for a while. > > > > tomcat 21115 21114 0 14:46:44 ? 193:04 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 773 21115 0 17:29:27 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 4270 21115 0 18:29:29 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 5988 21115 0 18:59:32 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 27209 21115 0 01:01:02 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 13155 21115 0 05:32:09 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 16785 21115 0 06:34:52 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 12948 21115 0 20:58:50 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 20054 21115 0 23:00:21 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti tomcat > 23730 21115 0 00:03:47 ? 0:00 /usr/java/bin/java > -Djava.util.logging.config.file=/opt/apache-tomcat -5.5.27-ti > > The main process 21115 starts off fine, and is even still running with > no problems the next day, but we keep getting these ghost processes > (for want of a better description). > > We have multiple tomcat servers running on the same system, but this > is the only one experiencing the problem, all of the others are unaffected. > > The web apps themselves are pretty standard, servlets, JSPs, web > services, Oracle DB connection and a JMX link to an Apache MQ server > for monitoring purposes. This isn't even a heavily used application. > > > > The web has come up empty for us, we can't find any information on > this fault at all, so would really appreciate any help you may be able > to give us. > > > > Regards > > Dave > > --------------------------------------------------------------------- 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
