Hi, As you already seem to have dug quite a bit on this, I would advise to create a jira entry with the information you gathered.
Btw, your subject seems to show two opposite issues: blocked threads won't burn CPU. If Jenkins is actually occupying 100% cpu for a long period, you should also find RUNNING threads. My 2 cents Le 7 nov. 2013 20:33, "Zetan Drableg" <[email protected]> a écrit : > Hello, > > Recently upgraded to Jenkins 1.537. Performance of the app has slowed a > lot. > It takes forever to load views, even with only 20 jobs in them. > Wall Display plugin shows frequent timeouts. > > Today I attached visualVM and can see jenkins @ 100% cpu. > Thread dump reveals 147 threads BLOCKED waiting to acquire a lock. > This looks like a classic contention bug where many threads try to access > a data structure that has synchronized access. > > Lots of these - > > "Handling GET /jenkins//job/autoDevAgentTest_824test/api/json : > http-8080-199" daemon prio=10 tid=0x00007f8ad41fc800 nid=0x55c0 waiting for > monitor entry [0x00007f8aa5794000] > java.lang.Thread.State: BLOCKED (on object monitor) > at hudson.model.AbstractBuild.getChangeSet(AbstractBuild.java:849) > - waiting to lock <0x000000074742bd58> (a java.lang.Object) > at > hudson.model.AbstractBuild.hasParticipant(AbstractBuild.java:454) > at > hudson.model.AbstractProject.hasParticipant(AbstractProject.java:1627) > at hudson.model.User.getProjects(User.java:468) > at > hudson.scm.MailAddressResolverImpl.findMailAddressFor(MailAddressResolverImpl.java:21) > at > hudson.tasks.MailAddressResolver.resolve(MailAddressResolver.java:112) > at hudson.tasks.Mailer$UserProperty.getAddress(Mailer.java:532) > at sun.reflect.GeneratedMethodAccessor1084.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:66) > at org.kohsuke.stapler.export.Property.writeTo(Property.java:114) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:187) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:232) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:182) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:137) > at org.kohsuke.stapler.export.Property.writeTo(Property.java:114) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:187) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:232) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:182) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:137) > at org.kohsuke.stapler.export.Property.writeTo(Property.java:114) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:187) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:232) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:137) > at org.kohsuke.stapler.export.Property.writeTo(Property.java:114) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:187) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at org.kohsuke.stapler.export.Model.writeTo(Model.java:154) > at > org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:267) > at hudson.model.Api.doJson(Api.java:196) > > vs one holding the lock > > "Handling GET /jenkins//job/autoScmBAT_suse10_x86_apollo/api/json : > http-8080-101" daemon prio=10 tid=0x00007f8ad4128000 nid=0x5524 waiting for > monitor entry [0x00007f8abb46d000] > java.lang.Thread.State: BLOCKED (on object monitor) > at hudson.model.AbstractBuild.getChangeSet(AbstractBuild.java:849) > - locked <0x000000074742bd58> (a java.lang.Object) > at > hudson.model.AbstractBuild.hasParticipant(AbstractBuild.java:454) > at > hudson.model.AbstractProject.hasParticipant(AbstractProject.java:1627) > at hudson.model.User.getProjects(User.java:468) > at > hudson.scm.MailAddressResolverImpl.findMailAddressFor(MailAddressResolverImpl.java:21) > at > hudson.tasks.MailAddressResolver.resolve(MailAddressResolver.java:112) > at hudson.tasks.Mailer$UserProperty.getAddress(Mailer.java:532) > at sun.reflect.GeneratedMethodAccessor1084.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:66) > at org.kohsuke.stapler.export.Property.writeTo(Property.java:114) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:187) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:232) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:182) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:137) > at org.kohsuke.stapler.export.Property.writeTo(Property.java:114) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:187) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:232) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:182) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:137) > at org.kohsuke.stapler.export.Property.writeTo(Property.java:114) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:187) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:232) > at > org.kohsuke.stapler.export.Property.writeValue(Property.java:137) > at org.kohsuke.stapler.export.Property.writeTo(Property.java:114) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:187) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at > org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:182) > at org.kohsuke.stapler.export.Model.writeTo(Model.java:154) > at > org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:267) > at hudson.model.Api.doJson(Api.java:196) > > Is this a known bug? Any work around? > > Thanks > -Nate > > > -- > You received this message because you are subscribed to the Google Groups > "Jenkins Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
