热门线程 API
编辑热门线程 API
编辑热门线程 API 用于获取 Logstash 当前的热门线程。热门线程是指 CPU 使用率高且执行时间超过正常时长的 Java 线程。
curl -XGET 'localhost:9600/_node/hot_threads?pretty'
输出结果是一个 JSON 文档，其中包含 Logstash 前几个热门线程的细分信息。
示例响应
{
"hot_threads" : {
"time" : "2017-06-06T18:25:28-07:00",
"busiest_threads" : 3,
"threads" : [ {
"name" : "Ruby-0-Thread-7",
"percent_of_cpu_time" : 0.0,
"state" : "timed_waiting",
"path" : "/path/to/logstash-8.16.0/vendor/bundle/jruby/1.9/gems/puma-2.16.0-java/lib/puma/thread_pool.rb:187",
"traces" : [ "java.lang.Object.wait(Native Method)", "org.jruby.RubyThread.sleep(RubyThread.java:1002)", "org.jruby.RubyKernel.sleep(RubyKernel.java:803)" ]
}, {
"name" : "[test2]>worker3",
"percent_of_cpu_time" : 0.85,
"state" : "waiting",
"traces" : [ "sun.misc.Unsafe.park(Native Method)", "java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)", "java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)" ]
}, {
"name" : "[test2]>worker2",
"percent_of_cpu_time" : 0.85,
"state" : "runnable",
"traces" : [ "org.jruby.RubyClass.allocate(RubyClass.java:225)", "org.jruby.RubyClass.newInstance(RubyClass.java:856)", "org.jruby.RubyClass$INVOKER$i$newInstance.call(RubyClass$INVOKER$i$newInstance.gen)" ]
} ]
}
}
允许的参数为
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要返回的热门线程数量。默认为 10。 |
|
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每个线程要报告的堆栈跟踪深度。默认为 50。 |
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如果为 true，则返回纯文本而不是 JSON 格式。默认为 false。 |
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如果为 true，则不返回空闲线程。默认为 true。 |
有关可应用于所有 Logstash 监控 API 的选项列表，请参阅常见选项。
您可以使用?human 参数以人类可读的格式返回文档。
curl -XGET 'localhost:9600/_node/hot_threads?human=true'
人类可读响应示例
::: {}
Hot threads at 2017-06-06T18:31:17-07:00, busiestThreads=3:
================================================================================
0.0 % of cpu usage, state: timed_waiting, thread name: 'Ruby-0-Thread-7'
/path/to/logstash-8.16.0/vendor/bundle/jruby/1.9/gems/puma-2.16.0-java/lib/puma/thread_pool.rb:187
java.lang.Object.wait(Native Method)
org.jruby.RubyThread.sleep(RubyThread.java:1002)
org.jruby.RubyKernel.sleep(RubyKernel.java:803)
--------------------------------------------------------------------------------
0.0 % of cpu usage, state: waiting, thread name: 'defaultEventExecutorGroup-5-4'
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
--------------------------------------------------------------------------------
0.05 % of cpu usage, state: timed_waiting, thread name: '[test]-pipeline-manager'
java.lang.Object.wait(Native Method)
java.lang.Thread.join(Thread.java:1253)
org.jruby.internal.runtime.NativeThread.join(NativeThread.java:75)