... 显示调试会话时间的 .time - Display System Time 显示线程时间的 .ttime - Display Thread Times 显示任务列表的 .tlist - List Process IDs ...
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标签中的第一行显示,该线程需要32个字节,而且,自上次内存分配失败以来(即自上次发生gc以来),已经有286毫秒的时间。
The first line in the tag shows that the thread needed 32 bytes and it has been 286 milliseconds since the last memory allocation failure (i.e., since the last GC occurred).
对于“Lock [AQS@135]”,它在一个程序位置出现竞争,显示了竞争的次数,时间和竞争时刻的线程调用栈。
For “Lock [AQS@135]”, it contends in one place, showing contention count, contention time, and full stack back trace of the contention.
对于阻塞方法(例如Read)将会显示总共时间,包括线程正在等待调度以及方法返回的时间。
Blocking methods, such as read , will be counted as the total time, including the time the thread spends being unscheduled and waiting for the call to complete.
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