"login" Processes - Login Window and Services

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∟"login" Processes - Login Window and Services

This section describes 'login' processes, which are created by the operating system to display the login window and provide login services.

What are "login" Processes? - "login" processes are created by the operating system to display the login window and provide login services.

Here is what I did about "login" processes.

1. View "login" processes with "ps" command.

herong$ ps -A | grep login

  102 ??      0:00.61 /System/Library/CoreServices/logind
  101 ??      1:18.11 /System/Library/CoreServices/loginwindow.app/Contents
    /MacOS/loginwindow console
10088 ??      0:43.55 /System/Library/CoreServices/loginwindow.app/Contents
    /MacOS/loginwindow
27957 ??      0:00.25 /usr/libexec/loginitemregisterd
  805 ttys000 0:00.02 login -pfl herong /bin/bash -c exec -la bash /bin/bash
  ...

2. Check CPU and memory usages of "login" processes using "top" command.

herong$ top -pid 101 ...

  PID COMMAND      %CPU TIME     #TH  #WQ  #POR MEM  PURG CMPR  PGRP  PPID
  101 loginwindow  0.0  01:24.70 3    2    642  24M  0B   37M   101   1
  102 logind       0.0  00:00.63 2    1    134  972K 0B   596K  102   1
27957 loginitemreg 0.0  00:00.25 2    2    34   644K 0B   588K  27957 1