Get hot threads

Base URL: /

GET /_node/hot_threads

Get information about current hot threads for Logstash. A hot thread is a Java thread that has high CPU usage and takes longer than normal to execute.

Query parameters

threads integer · default: 10: The number of hot threads to return.
stacktrace_size integer · default: 50: The depth of the stack trace to report for each thread.
ignore_idle_threads boolean · default: true: If true, does not return idle threads.
pretty boolean: If you append ?pretty=true to the request, the JSON returned will be pretty formatted. Use it for debugging only!
human boolean: If you append ?human=true to the request, the JSON returned will be in a human-readable format.

Response

Indicates a successful call

application/json

hot_threads object

{ "hot_threads": { "time": "2025-01-06T18:25:28-07:00", "busiest_threads": 3, "threads": [ { "name": "Ruby-0-Thread-7", "thread_id": 37, "percent_of_cpu_time": 0, "state": "timed_waiting", "traces": [ "java.lang.Object.wait(Native Method)", "org.jruby.RubyThread.sleep(RubyThread.java:1002)", "org.jruby.RubyKernel.sleep(RubyKernel.java:803)" ] }, { "name": "[test2]\u003Eworker3", "thread_id": 10, "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]\u003Eworker2", "thread_id": 11, "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)" ] } ] } }