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linux查看某个进程的线程id(spid)

时间:2015-06-19 00:01:42      阅读:576      评论:0      收藏:0      [点我收藏+]

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鉴于linux下线程的广泛使用 我们怎么查看某个进程拥有的线程id了

现在很多服务的设计 主进程->子进程->线程(比如mysql,varnish)

主进程负责侦听网络上的连接 并把连接发送给子进程 子进程派生线程去处理这些线程

 

mysql(父进程460,子进程863)

  1   460   425   333 ?           -1 S        0   0:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/storage/mysql/backup --pid-file=/storag
  460   863   425   333 ?           -1 Sl     500  21:34  \_ /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/storage/mysql/backup

 

1、ps 

  -T Show threads, possibly with SPID column

[root@pdd1 ~]# ps -T -p 863
  PID  SPID TTY          TIME CMD
  863   863 ?        00:00:00 mysqld
  863   865 ?        00:00:51 mysqld
  863   866 ?        00:01:14 mysqld
  863   867 ?        00:00:58 mysqld
  863   868 ?        00:00:50 mysqld
  863   869 ?        00:00:49 mysqld
  863   870 ?        00:00:52 mysqld
  863   871 ?        00:00:50 mysqld
  863   872 ?        00:00:49 mysqld
  863   873 ?        00:00:51 mysqld
  863   874 ?        00:00:48 mysqld
  863   876 ?        00:04:22 mysqld
  863   877 ?        00:07:54 mysqld
  863   878 ?        00:00:19 mysqld
  863   879 ?        00:00:00 mysqld
  863   882 ?        00:00:00 mysqld
  863   887 ?        00:00:00 mysqld
  863  2408 ?        00:00:00 mysqld
  863  2428 ?        00:00:00 mysqld

我们可以看到子进程863派生出的线程  第一行spid 863是主线程(我们知道主线程就是该进程本身)

 

2、top

-H : Threads toggle
Starts top with the last remembered ’H’ state reversed. When this toggle is On, all individual threads will be dis-
played. Otherwise, top displays a summation of all threads in a process.

 

top -H -p 863

PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                               
  872 mysql     20   0  741m  56m 4972 S  0.3  5.7   0:49.11 mysqld                                                                                 
  876 mysql     20   0  741m  56m 4972 S  0.3  5.7   4:22.76 mysqld                                                                                 
  863 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:00.06 mysqld                                                                                 
  865 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:51.65 mysqld                                                                                 
  866 mysql     20   0  741m  56m 4972 S  0.0  5.7   1:14.77 mysqld                                                                                 
  867 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:58.15 mysqld                                                                                 
  868 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:50.26 mysqld                                                                                 
  869 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:49.88 mysqld                                                                                 
  870 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:52.48 mysqld                                                                                 
  871 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:50.83 mysqld                                                                                 
  873 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:51.90 mysqld                                                                                 
  874 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:48.10 mysqld                                                                                 
  877 mysql     20   0  741m  56m 4972 S  0.0  5.7   7:55.01 mysqld                                                                                 
  878 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:19.84 mysqld                                                                                 
  879 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:00.00 mysqld                                                                                 
  882 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:00.00 mysqld                                                                                 
  887 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:00.58 mysqld                                                                                 
 2408 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:00.00 mysqld                                                                                 
 2428 mysql     20   0  741m  56m 4972 S  0.0  5.7   0:00.06 mysqld

 

3、pstree

[root@pdd1 ~]# pstree -Aup -h 460
mysqld_safe(460)---mysqld(863,mysql)-+-{mysqld}(865)
                                     |-{mysqld}(866)
                                     |-{mysqld}(867)
                                     |-{mysqld}(868)
                                     |-{mysqld}(869)
                                     |-{mysqld}(870)
                                     |-{mysqld}(871)
                                     |-{mysqld}(872)
                                     |-{mysqld}(873)
                                     |-{mysqld}(874)
                                     |-{mysqld}(876)
                                     |-{mysqld}(877)
                                     |-{mysqld}(878)
                                     |-{mysqld}(879)
                                     |-{mysqld}(882)
                                     |-{mysqld}(887)
                                     |-{mysqld}(2408)
                                     `-{mysqld}(2428)

 

linux查看某个进程的线程id(spid)

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原文地址:http://www.cnblogs.com/metasequoia/p/4587293.html

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