【发布时间】：2014-12-20 14:41:23
【问题描述】：
我正在使用 Undertow，我的目标是使用 aws 实例获得最大吞吐量。
我面临的问题是：
当我使用线程数 = 1000 的一个实例时，我得到了 9900 的整体。 当我使用线程 = 1000（每个）的两个实例时，吞吐量为 9800。
我想到的一种方法是在创建服务器时增加线程数。
这是我得到的错误：
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:293)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: java.io.IOException: Too many open files
at io.undertow.Undertow.start(Undertow.java:141)
at testProject.testArtifact.ServerConnection.createServer(ServerConnection.java:63)
at testProject.testArtifact.App.main(App.java:20)
... 6 more
Caused by: java.io.IOException: Too many open files
at sun.nio.ch.IOUtil.makePipe(Native Method)
at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:65)
at sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:36)
at org.xnio.nio.NioXnio$DefaultSelectorCreator.open(NioXnio.java:245)
at org.xnio.nio.NioXnioWorker.<init>(NioXnioWorker.java:93)
at org.xnio.nio.NioXnio.createWorker(NioXnio.java:203)
at org.xnio.Xnio.createWorker(Xnio.java:437)
at org.xnio.Xnio.createWorker(Xnio.java:424)
at io.undertow.Undertow.start(Undertow.java:84)
... 8 more
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.938 s
[INFO] Finished at: 2014-10-24T17:31:59+00:00
[INFO] Final Memory: 9M/142M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.3.2:java (default-cli) on project testArtifact: An exception occured while executing the Java class. null: InvocationTargetException: java.io.IOException: Too many open files -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.3.2:java (default-cli) on project testArtifact: An exception occured while executing the Java class. null
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:347)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:582)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: An exception occured while executing the Java class. null
at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:345)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
... 19 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:293)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: java.io.IOException: Too many open files
at io.undertow.Undertow.start(Undertow.java:141)
at testProject.testArtifact.ServerConnection.createServer(ServerConnection.java:63)
at testProject.testArtifact.App.main(App.java:20)
... 6 more
Caused by: java.io.IOException: Too many open files
at sun.nio.ch.IOUtil.makePipe(Native Method)
at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:65)
at sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:36)
at org.xnio.nio.NioXnio$DefaultSelectorCreator.open(NioXnio.java:245)
at org.xnio.nio.NioXnioWorker.<init>(NioXnioWorker.java:93)
at org.xnio.nio.NioXnio.createWorker(NioXnio.java:203)
at org.xnio.Xnio.createWorker(Xnio.java:437)
at org.xnio.Xnio.createWorker(Xnio.java:424)
at io.undertow.Undertow.start(Undertow.java:84)
... 8 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
在我的情况下如何增加吞吐量。
当我尝试使用线程 > 1000 时无法解决问题
任何帮助都会非常有帮助。
谢谢。
【问题讨论】：
标签： java redhat amazon-elb undertow