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  • mysqld 多线程 用pstree -p 显示

    http://blog.chinaunix.net/uid-22566367-id-3751084.html

    http://blog.csdn.net/fly2nn/article/details/6980236

    pstree -p 6762    :mysqld 多线程序,当一个请求来,就建立一个线程 (12244 ,15470) 为MYSQL登陆对应的服务线程,其他线程不变

    进程的pid:
    [root@localhost ~]# ps -ef | grep mysqld | grep -v "grep" | awk '{print $2}'
    6762
    
    查看进程的所有线程
    [root@localhost ~]# ps -L 6762
      PID   LWP TTY      STAT   TIME COMMAND
     6762  6762 pts/1    Sl+    0:02 ./mysqld --debug
     6762  6763 pts/1    Sl+    0:00 ./mysqld --debug
     6762  6764 pts/1    Sl+    0:00 ./mysqld --debug
     6762  6765 pts/1    Sl+    0:00 ./mysqld --debug
     6762  6766 pts/1    Sl+    0:00 ./mysqld --debug
     6762  6767 pts/1    Sl+    0:00 ./mysqld --debug
     6762  6768 pts/1    Sl+    0:00 ./mysqld --debug
     6762  6769 pts/1    Sl+    0:00 ./mysqld --debug
     6762  6770 pts/1    Sl+    0:00 ./mysqld --debug
     6762 12244 pts/1    Sl+    0:00 ./mysqld --debug

    查看所有子进程:
    [root@localhost ~]# pstree -p 6762

    mysqld(6762)─┬─{mysqld}(6763)
                 ├─{mysqld}(6764)
                 ├─{mysqld}(6765)
                 ├─{mysqld}(6766)
                 ├─{mysqld}(6767)
                 ├─{mysqld}(6768)
                 ├─{mysqld}(6769)
                 ├─{mysqld}(6770)
                 ├─{mysqld}(12244)

    查看进程的当前状态:
    [root@localhost ~]# cat /proc/12244/status
    Name:   mysqld
    State:  S (sleeping)
    Tgid:   6762
    Pid:    12244
    PPid:   4383


                

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  • 原文地址:https://www.cnblogs.com/zengkefu/p/4951422.html
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