正在分析线程转储 - sun.misc.Unsafe.park 上有很多阻塞的线程
Analysing thread dump - lot of blocked threads on sun.misc.Unsafe.park
正在解决 Java play with akka 框架应用程序中的性能问题。基本上消费和处理来自队列的消息。并在处理每条消息时大量使用外部服务 API。
我在某些情况下遇到 CPU 负载问题，试图找到根本原因。这是 CPU ~100% 时主机之一的线程转储。
我看到很多 sun.misc.Unsafe.park 的阻塞线程，但没有看到应用程序代码的任何信息。这些阻塞的是在等待IO吗？你能给一些提示吗？
谢谢
1032 BLOCKED
threads
Thread 34542 - threadId:Thread 34542 - state:BLOCKED
stackTrace:
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
- java.util.concurrent.locks.LockSupport.parkNanos(java.lang.Object, long) @bci=20, line=226 (Compiled frame)
- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(long) @bci=68, line=2082 (Compiled frame)
- java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=122, line=1090 (Compiled frame)
- java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=807 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.getTask() @bci=156, line=1068 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1130 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=615 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=745 (Interpreted frame)
362 BLOCKED
threads
Thread 77117 - threadId:Thread 77117 - state:BLOCKED
stackTrace:
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
- java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=186 (Compiled frame)
- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2043 (Compiled frame)
- java.util.concurrent.LinkedBlockingQueue.take() @bci=29, line=442 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.getTask() @bci=156, line=1068 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1130 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=615 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=745 (Interpreted frame)
269 BLOCKED
threads
Thread 37702 - threadId:Thread 37702 - state:BLOCKED
stackTrace:
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
- scala.concurrent.forkjoin.ForkJoinPool.scan(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=525, line=2075 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=8, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
66 BLOCKED
threads
Thread 33338 - threadId:Thread 33338 - state:BLOCKED
stackTrace:
- java.io.ExpiringCache.get(java.lang.String) @bci=0, line=74 (Compiled frame)
- java.io.UnixFileSystem.canonicalize(java.lang.String) @bci=17, line=152 (Compiled frame)
- java.io.File.getCanonicalPath() @bci=27, line=618 (Compiled frame)
- com.azr.rocketman.render.helper.EmailconfigTemplateMethodModel.<init>(java.lang.String) @bci=27, line=50 (Compiled frame)
- sun.reflect.GeneratedConstructorAccessor84.newInstance(java.lang.Object[]) @bci=28 (Compiled frame)
- sun.reflect.DelegatingConstructorAccessorImpl.newInstance(java.lang.Object[]) @bci=5, line=45 (Compiled frame)
- java.lang.reflect.Constructor.newInstance(java.lang.Object[]) @bci=79, line=526 (Compiled frame)
- freemarker.ext.beans.BeansWrapper.newInstance(java.lang.Class, java.util.List) @bci=144, line=994 (Compiled frame)
- freemarker.core.NewBI$ConstructorFunction.exec(java.util.List) @bci=32, line=116 (Compiled frame)
- freemarker.core.MethodCall._eval(freemarker.core.Environment) @bci=52, line=98 (Compiled frame)
…
- freemarker.core.Environment.visit(freemarker.core.TemplateElement) @bci=7, line=265 (Compiled frame)
- freemarker.core.Environment.process() @bci=31, line=243 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
64 BLOCKED
threads
Thread 33194 - threadId:Thread 33194 - state:BLOCKED
stackTrace:
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
- java.util.concurrent.locks.LockSupport.parkNanos(java.lang.Object, long) @bci=20, line=226 (Compiled frame)
- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(long) @bci=68, line=2082 (Compiled frame)
- java.util.concurrent.LinkedBlockingQueue.poll(long, java.util.concurrent.TimeUnit) @bci=62, line=467 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.getTask() @bci=141, line=1068 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1130 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=615 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=745 (Interpreted frame)
63 BLOCKED
threads
Thread 63135 - threadId:Thread 63135 - state:BLOCKED
stackTrace:
- sun.nio.ch.EPollArrayWrapper.epollWait(long, int, long, int) @bci=0 (Compiled frame; information may be imprecise)
- sun.nio.ch.EPollArrayWrapper.poll(long) @bci=18, line=269 (Compiled frame)
- sun.nio.ch.EPollSelectorImpl.doSelect(long) @bci=28, line=79 (Compiled frame)
- sun.nio.ch.SelectorImpl.lockAndDoSelect(long) @bci=37, line=87 (Compiled frame)
- sun.nio.ch.SelectorImpl.select(long) @bci=30, line=98 (Compiled frame)
- org.jboss.netty.channel.socket.nio.SelectorUtil.select(java.nio.channels.Selector) @bci=4, line=68 (Compiled frame)
- org.jboss.netty.channel.socket.nio.AbstractNioSelector.select(java.nio.channels.Selector) @bci=1, line=409 (Compiled frame)
- org.jboss.netty.channel.socket.nio.AbstractNioSelector.run() @bci=49, line=206 (Compiled frame)
- org.jboss.netty.channel.socket.nio.AbstractNioWorker.run() @bci=1, line=90 (Interpreted frame)
- org.jboss.netty.channel.socket.nio.NioWorker.run() @bci=1, line=178 (Interpreted frame)
- org.jboss.netty.util.ThreadRenamingRunnable.run() @bci=55, line=108 (Interpreted frame)
- org.jboss.netty.util.internal.DeadLockProofWorker.run() @bci=14, line=42 (Interpreted frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=95, line=1145 (Interpreted frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=615 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=745 (Interpreted frame)
34 blocked threads
Thread 33336 - threadId:Thread 33336 - state:BLOCKED
stackTrace:
…
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
26 blocked threads
Thread 33327 - threadId:Thread 33327 - state:BLOCKED
stackTrace:
- freemarker.core._RegexBuiltins.getPattern(java.lang.String, int) @bci=16, line=122 (Compiled frame)
…
- freemarker.core.Environment.process() @bci=31, line=243 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
26 blocked thread
Thread 33333 - threadId:Thread 33333 - state:BLOCKED
stackTrace:
- freemarker.core._RegexBuiltins.getPattern(java.lang.String, int) @bci=16, line=122 (Compiled frame)
..
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
25 blocked threads
Thread 33323 - threadId:Thread 33323 - state:BLOCKED
stackTrace:
- freemarker.core._RegexBuiltins.getPattern(java.lang.String, int) @bci=16, line=122 (Compiled frame)
…
- freemarker.core.Environment.visit(freemarker.core.TemplateElement) @bci=7, line=265 (Compiled frame)
- freemarker.core.Environment.process() @bci=31, line=243 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
sun.misc.Unsafe.park(...) 基本上类似于 Thread.wait，但它使用 os 代码，因此它不是 exposed 给我们。
您可以在堆栈跟踪中看到被停放的线程来自与阻塞队列相关的线程池。来自池的 "parked" 个线程只是在等待分配任务。另外，他们真的消耗了 0% CPU 所以我怀疑这是你的问题。
虽然您遇到了死锁或并发问题，但这是 pos可能的，因此您的队列将永远阻塞自己...
此外，其中唯一提到 I/O 的线程是 ID 为 63135 的线程。
正在解决 Java play with akka 框架应用程序中的性能问题。基本上消费和处理来自队列的消息。并在处理每条消息时大量使用外部服务 API。 我在某些情况下遇到 CPU 负载问题，试图找到根本原因。这是 CPU ~100% 时主机之一的线程转储。
我看到很多 sun.misc.Unsafe.park 的阻塞线程，但没有看到应用程序代码的任何信息。这些阻塞的是在等待IO吗？你能给一些提示吗？ 谢谢
1032 BLOCKED
threads
Thread 34542 - threadId:Thread 34542 - state:BLOCKED
stackTrace:
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
- java.util.concurrent.locks.LockSupport.parkNanos(java.lang.Object, long) @bci=20, line=226 (Compiled frame)
- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(long) @bci=68, line=2082 (Compiled frame)
- java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=122, line=1090 (Compiled frame)
- java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take() @bci=1, line=807 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.getTask() @bci=156, line=1068 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1130 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=615 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=745 (Interpreted frame)
362 BLOCKED
threads
Thread 77117 - threadId:Thread 77117 - state:BLOCKED
stackTrace:
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
- java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14, line=186 (Compiled frame)
- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await() @bci=42, line=2043 (Compiled frame)
- java.util.concurrent.LinkedBlockingQueue.take() @bci=29, line=442 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.getTask() @bci=156, line=1068 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1130 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=615 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=745 (Interpreted frame)
269 BLOCKED
threads
Thread 37702 - threadId:Thread 37702 - state:BLOCKED
stackTrace:
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
- scala.concurrent.forkjoin.ForkJoinPool.scan(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=525, line=2075 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=8, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
66 BLOCKED
threads
Thread 33338 - threadId:Thread 33338 - state:BLOCKED
stackTrace:
- java.io.ExpiringCache.get(java.lang.String) @bci=0, line=74 (Compiled frame)
- java.io.UnixFileSystem.canonicalize(java.lang.String) @bci=17, line=152 (Compiled frame)
- java.io.File.getCanonicalPath() @bci=27, line=618 (Compiled frame)
- com.azr.rocketman.render.helper.EmailconfigTemplateMethodModel.<init>(java.lang.String) @bci=27, line=50 (Compiled frame)
- sun.reflect.GeneratedConstructorAccessor84.newInstance(java.lang.Object[]) @bci=28 (Compiled frame)
- sun.reflect.DelegatingConstructorAccessorImpl.newInstance(java.lang.Object[]) @bci=5, line=45 (Compiled frame)
- java.lang.reflect.Constructor.newInstance(java.lang.Object[]) @bci=79, line=526 (Compiled frame)
- freemarker.ext.beans.BeansWrapper.newInstance(java.lang.Class, java.util.List) @bci=144, line=994 (Compiled frame)
- freemarker.core.NewBI$ConstructorFunction.exec(java.util.List) @bci=32, line=116 (Compiled frame)
- freemarker.core.MethodCall._eval(freemarker.core.Environment) @bci=52, line=98 (Compiled frame)
…
- freemarker.core.Environment.visit(freemarker.core.TemplateElement) @bci=7, line=265 (Compiled frame)
- freemarker.core.Environment.process() @bci=31, line=243 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
64 BLOCKED
threads
Thread 33194 - threadId:Thread 33194 - state:BLOCKED
stackTrace:
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
- java.util.concurrent.locks.LockSupport.parkNanos(java.lang.Object, long) @bci=20, line=226 (Compiled frame)
- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(long) @bci=68, line=2082 (Compiled frame)
- java.util.concurrent.LinkedBlockingQueue.poll(long, java.util.concurrent.TimeUnit) @bci=62, line=467 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.getTask() @bci=141, line=1068 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=26, line=1130 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=615 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=745 (Interpreted frame)
63 BLOCKED
threads
Thread 63135 - threadId:Thread 63135 - state:BLOCKED
stackTrace:
- sun.nio.ch.EPollArrayWrapper.epollWait(long, int, long, int) @bci=0 (Compiled frame; information may be imprecise)
- sun.nio.ch.EPollArrayWrapper.poll(long) @bci=18, line=269 (Compiled frame)
- sun.nio.ch.EPollSelectorImpl.doSelect(long) @bci=28, line=79 (Compiled frame)
- sun.nio.ch.SelectorImpl.lockAndDoSelect(long) @bci=37, line=87 (Compiled frame)
- sun.nio.ch.SelectorImpl.select(long) @bci=30, line=98 (Compiled frame)
- org.jboss.netty.channel.socket.nio.SelectorUtil.select(java.nio.channels.Selector) @bci=4, line=68 (Compiled frame)
- org.jboss.netty.channel.socket.nio.AbstractNioSelector.select(java.nio.channels.Selector) @bci=1, line=409 (Compiled frame)
- org.jboss.netty.channel.socket.nio.AbstractNioSelector.run() @bci=49, line=206 (Compiled frame)
- org.jboss.netty.channel.socket.nio.AbstractNioWorker.run() @bci=1, line=90 (Interpreted frame)
- org.jboss.netty.channel.socket.nio.NioWorker.run() @bci=1, line=178 (Interpreted frame)
- org.jboss.netty.util.ThreadRenamingRunnable.run() @bci=55, line=108 (Interpreted frame)
- org.jboss.netty.util.internal.DeadLockProofWorker.run() @bci=14, line=42 (Interpreted frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=95, line=1145 (Interpreted frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=615 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=745 (Interpreted frame)
34 blocked threads
Thread 33336 - threadId:Thread 33336 - state:BLOCKED
stackTrace:
…
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
26 blocked threads
Thread 33327 - threadId:Thread 33327 - state:BLOCKED
stackTrace:
- freemarker.core._RegexBuiltins.getPattern(java.lang.String, int) @bci=16, line=122 (Compiled frame)
…
- freemarker.core.Environment.process() @bci=31, line=243 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
26 blocked thread
Thread 33333 - threadId:Thread 33333 - state:BLOCKED
stackTrace:
- freemarker.core._RegexBuiltins.getPattern(java.lang.String, int) @bci=16, line=122 (Compiled frame)
..
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
25 blocked threads
Thread 33323 - threadId:Thread 33323 - state:BLOCKED
stackTrace:
- freemarker.core._RegexBuiltins.getPattern(java.lang.String, int) @bci=16, line=122 (Compiled frame)
…
- freemarker.core.Environment.visit(freemarker.core.TemplateElement) @bci=7, line=265 (Compiled frame)
- freemarker.core.Environment.process() @bci=31, line=243 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.render(java.lang.String, freemarker.template.Configuration, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=165, line=101 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=7, line=60 (Compiled frame)
- com.azr.push.renderer.processor.FreeMarkerRenderer.renderFromPath(java.lang.String, com.azr.push.renderer.data.TemplateData, com.azr.push.error.MessageError) @bci=4, line=30 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.renderHtmlBody(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext, com.azr.push.renderer.data.TemplateData) @bci=23, line=146 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendEmailContext) @bci=61, line=109 (Compiled frame)
- com.azr.push.pipeline.rendersend.component.email.RenderEmailComponent.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=5, line=63 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=31, line=21 (Compiled frame)
- com.azr.push.pipeline.rendersend.RenderAndSendPipeline.process(com.azr.push.pipeline.rendersend.context.RenderAndSendContext) @bci=2, line=20 (Compiled frame)
- com.azr.push.assembler.AbstractDataAssembler.assemble(com.azr.push.pojo.wrapper.UserPayload) @bci=27, line=72 (Compiled frame)
- com.azr.push.assembler.AssemblerActor.onReceive(java.lang.Object) @bci=39, line=30 (Compiled frame)
- akka.actor.UntypedActor$$anonfun$receive.applyOrElse(java.lang.Object, scala.Function1) @bci=7, line=167 (Compiled frame)
- akka.actor.ActorCell.receiveMessage(java.lang.Object) @bci=25, line=498 (Compiled frame)
- akka.actor.ActorCell.invoke(akka.dispatch.Envelope) @bci=39, line=456 (Compiled frame)
- akka.dispatch.Mailbox.processMailbox(int, long) @bci=24, line=237 (Compiled frame)
- akka.dispatch.Mailbox.run() @bci=20, line=219 (Compiled frame)
- akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec() @bci=4, line=385 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinTask.doExec() @bci=10, line=260 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(scala.concurrent.forkjoin.ForkJoinTask) @bci=10, line=1339 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinPool.runWorker(scala.concurrent.forkjoin.ForkJoinPool$WorkQueue) @bci=11, line=1979 (Compiled frame)
- scala.concurrent.forkjoin.ForkJoinWorkerThread.run() @bci=14, line=107 (Interpreted frame)
sun.misc.Unsafe.park(...) 基本上类似于 Thread.wait，但它使用 os 代码，因此它不是 exposed 给我们。
您可以在堆栈跟踪中看到被停放的线程来自与阻塞队列相关的线程池。来自池的 "parked" 个线程只是在等待分配任务。另外，他们真的消耗了 0% CPU 所以我怀疑这是你的问题。
虽然您遇到了死锁或并发问题，但这是 pos可能的，因此您的队列将永远阻塞自己...
此外，其中唯一提到 I/O 的线程是 ID 为 63135 的线程。