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
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