Re: Fine tune or disable JMX activity
On Jun 22, 2012, at 5:45 PM, Caldarale, Charles R wrote: > So let's see... you're using VisualVM which depends on JMX to retrieve the > information it reports, and you want to disable JMX? > > I think you're observing self-induced behavior. ah ah, yes I think you are quite right and it was a dumb question indeed. By the way, thank you, it helped me. Jacopo - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Fine tune or disable JMX activity
> From: Jacopo Cappellato [mailto:jacopo.cappell...@gmail.com] > Subject: Fine tune or disable JMX activity > While doing some profiling with Java VisualVM I have noticed that a lot of > object (java.util.TreeMap$Entry) are created even when there is no traffic; > they don't represent a memory leak because a garbage collection removes them > all, but the still grow at a very high pace; they seem to be generated by > JMX support in Tomcat. So let's see... you're using VisualVM which depends on JMX to retrieve the information it reports, and you want to disable JMX? I think you're observing self-induced behavior. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Fine tune or disable JMX activity
On 22/06/2012 16:30, Jacopo Cappellato wrote: > > On Jun 22, 2012, at 5:11 PM, Pid wrote: > >> On 22/06/2012 16:09, Jacopo Cappellato wrote: >>> Hi all, >>> >>> I am a committer of the Apache OFBiz project; OFBiz uses Tomcat 7.0.28 in >>> embedded mode. >>> While doing some profiling with Java VisualVM I have noticed that a lot of >>> object (java.util.TreeMap$Entry) are created even when there is no traffic; >>> they don't represent a memory leak because a garbage collection removes >>> them all, but the still grow at a very high pace; they seem to be generated >>> by JMX support in Tomcat. >> >> Can you explain a little about how you concluded that Tomcat's JMX >> support is responsible? >> > > I am actually not sure if Tomcat is responsible for this (it could actually > be completely unrelated); I think it is related to JMX because I have found > that most of the objects are created in the following stack: > > https://cwiki.apache.org/confluence/download/attachments/27850262/profiler-snapshot.png There's no Tomcat code in that tree. How many bytes is it using, am I reading that correctly? Is there an issue with this at all? p >>> Is it possible? Is there a way to disable JMX related activity (if not >>> needed, of course)? I am worried that this could cause an unnecessary waste >>> of server resources (more frequent GCs etc...). >>> >>> Thanks in advance, >>> >>> Jacopo >>> - >>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>> For additional commands, e-mail: users-h...@tomcat.apache.org >>> >> >> >> -- >> >> [key:62590808] >> >> >> > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > -- [key:62590808] signature.asc Description: OpenPGP digital signature
Re: Fine tune or disable JMX activity
On Jun 22, 2012, at 5:11 PM, Pid wrote: > On 22/06/2012 16:09, Jacopo Cappellato wrote: >> Hi all, >> >> I am a committer of the Apache OFBiz project; OFBiz uses Tomcat 7.0.28 in >> embedded mode. >> While doing some profiling with Java VisualVM I have noticed that a lot of >> object (java.util.TreeMap$Entry) are created even when there is no traffic; >> they don't represent a memory leak because a garbage collection removes them >> all, but the still grow at a very high pace; they seem to be generated by >> JMX support in Tomcat. > > Can you explain a little about how you concluded that Tomcat's JMX > support is responsible? > I am actually not sure if Tomcat is responsible for this (it could actually be completely unrelated); I think it is related to JMX because I have found that most of the objects are created in the following stack: https://cwiki.apache.org/confluence/download/attachments/27850262/profiler-snapshot.png Regards, Jacopo > > p > > >> Is it possible? Is there a way to disable JMX related activity (if not >> needed, of course)? I am worried that this could cause an unnecessary waste >> of server resources (more frequent GCs etc...). >> >> Thanks in advance, >> >> Jacopo >> - >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> > > > -- > > [key:62590808] > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Fine tune or disable JMX activity
On 22/06/2012 16:09, Jacopo Cappellato wrote: > Hi all, > > I am a committer of the Apache OFBiz project; OFBiz uses Tomcat 7.0.28 in > embedded mode. > While doing some profiling with Java VisualVM I have noticed that a lot of > object (java.util.TreeMap$Entry) are created even when there is no traffic; > they don't represent a memory leak because a garbage collection removes them > all, but the still grow at a very high pace; they seem to be generated by JMX > support in Tomcat. Can you explain a little about how you concluded that Tomcat's JMX support is responsible? p > Is it possible? Is there a way to disable JMX related activity (if not > needed, of course)? I am worried that this could cause an unnecessary waste > of server resources (more frequent GCs etc...). > > Thanks in advance, > > Jacopo > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > -- [key:62590808] signature.asc Description: OpenPGP digital signature
