Linux View thread Information __linux

You can use the ps-elf command to view thread information in a Linux operating system:

The following data is the thread that is included in the DB2SYSC process of the DB2 database:

192.168.100.228 [SDE ~]$ ps-elf |grep db2sysc|grep-v grep

UID        PID  PPID   LWP  C nlwp stime TTY          time
 CMD

Db2inst1  4865  4863  4865  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  4869  0  ?        00:00:45 DB2SYSC 0

Db2inst1  4865  4863  4870  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  4871  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  4872  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  4873  0  ?        00:00:03 DB2SYSC 0

Db2inst1  4865  4863  4874  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  4875  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  4876  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  4877  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  4878  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  5156  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  5662  0  ?        00:00:09 DB2SYSC 0

Db2inst1  4865  4863  5663  0  ?        00:00:15 DB2SYSC 0

Db2inst1  4865  4863  6125  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6126  0  ?        00:00:01 DB2SYSC 0

Db2inst1  4865  4863  6127  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6128  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6129  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6130  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6131  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6132  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6133  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6134  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6135  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6136  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6137  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  6191  0  ?        00:00:06 DB2SYSC 0

Db2inst1  4865  4863  6205  0  ?        00:00:10 DB2SYSC 0

Db2inst1  4865  4863  6337  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  7131  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863  7578  0  ?        00:00:13 DB2SYSC 0

Db2inst1  4865  4863  7596  0  ?        00:00:07 DB2SYSC 0

Db2inst1  4865  4863  7622  0  ?        00:00:01 DB2SYSC 0

Db2inst1  4865  4863  7908  0  ?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863 10637  0  ?        00:00:02 DB2SYSC 0

Db2inst1  4865  4863 25427  0   Jan04?        00:00:04 DB2SYSC 0

Db2inst1  4865  4863 27917  0   Jan04?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863 30815  0   Jan04?        00:00:00 DB2SYSC 0

Db2inst1  4865  4863 30816  0   Jan04?        00:00:00 DB2SYSC 0

which

The UID is the user ID.

PID is the process ID.

Ppid is the parent process ID, which is the 2,

LWP for light weight process or thread, lightweight processes, that is, thread identifiers

NLWP for, number of lwps (threads) in the process, quantity of threads

The DB2SYSC process now contains a total of 40 threads, and their thread numbers are:

192.168.100.228 [SDE ~]$ ps-elf |grep db2sysc|grep-v ' {print $} '

4865

4869

4870

4871

4872

4873

4874

4875

4876

4877

4878

5156

5662

5663

6125

6126

6127

6128

6129

6130

6131

6132

6133

6134

6135

6136

6137

6191

6205

6337

7131

7578

7596

7622

7908

10637

25427

27917

30815

30816

You can view more detailed thread information by using the commands of the database:

192.168.100.228 [SDE ~]$ Db2pd-edus|awk ' {print $3,$4} '

0--

All
 Edus

4865

4863

4880

TID Kernel

30816 DB2AGNTDP

30815 DB2AGNTDP

27917 DB2AGNTDP

25427 DB2AGNTDP

10637 DB2AGNTDP

7908 db2agent

7622 db2agent

7596 db2agent

7578 db2agent

7131 db2agent

6337 Db2agent

6205 db2agent

6191 DB2AGNTDP

6137 DB2EVMGI

6136 DB2FW1

6135 db2fw0

6134 db2lused

6133 DB2WLMD

6132 DB2PFCHR

6131 DB2PFCHR

6130 DB2PFCHR

6129 DB2PCLNR

6128 Db2dlock

6127 Db2lfr

6126 DB2LOGGW

6125 Db2loggr

5663 DB2STMM

5662 db2agent

5156 DB2TASKD

4878 DB2SPMLW

4877 Db2spmrsy

4876 Db2resync

4875 DB2TCPCM

4874 DB2TCPCM

4873 DB2IPCCM

4872 DB2LICC

4871 DB2THCLN

4870 Db2alarm

4869 DB2SYSC