Link to the original text ：jconsole The total number of blocks and waits in the thread panel ( turn )- Alicloud developer community

jconsole The total number of blocks and waits in the thread panel ( turn )

2015-04-05 1244

brief introduction ：  Total blocking Blocked count is the total number of times that the thread blocked to enter or reenter a monitor.

Total blocking

Blocked count is the total number of times that the thread blocked to enter or reenter a monitor. I.e. the number of times a thread has been in the java.lang.Thread.State.BLOCKED state.

Waiting total

Waited count is the total number of times that the thread waited for notification. i.e. the number of times that a thread has been in the ava.lang.Thread.State.WAITING or java.lang.Thread.State.TIMED_WAITING state.

When a thread attempts to acquire an internal object lock ( No java.util.concurrent Lock in the library ), The lock is occupied by other threads , Then the thread enters Blocked state .

When a thread waits for another thread to notify the scheduler of a condition , It enters by itself Wait state . Calling Object.wait() or Thread.join() Method , Or wait java.util.concurrent In the library Lock or Condition when , There will be waiting

jconsole The total number of blocks and waits in the thread panel _mangmang2012 The blog of -CSDN Blog _jconsole Total number of blocked and waiting

multithreading - What does "blocked Count" and "Waited Count" in a Java Thread mean? - Stack Overflow

About jconsole Thread monitoring parameters blocked Count ,Waited Count

For detailed concepts, see  java.lang.management.ThreadInfo