Processes are programs currently running on the system. You can use the SCOadmin Process Manager to perform operations on system processes (locally and on remote systems):
You have several options for viewing processes with the Process Manager:
In the Process Manager, select All from the View menu. The default view shows all processes.
In the Process Manager, select By User, By Tty, or By Pid from the View menu.
To view processes by a set of extended attributes, select Attributes... from the View menu. The extended attributes are shown in ``Process attributes'' You also have the option of clicking on buttons that select a set of attributes (a Default is automatically selected), including Ownership...
Select an attribute in the ``Available'' column and click on the Add button. You can remove an attribute from your view by selecting it from the ``Selected'' column and clicking on the Remove button. You can search for a specific attribute by entering it in the ``Search for:'' field.
|Ruser||real user ID|
|Tty||controlling port number|
|Pid||process ID number|
|Ppid||parent process ID number|
|Time||cumulative execution time for the process|
|Pcpu||percentage of CPU time used|
|Vsize||virtual memory size in kilobytes|
|Pgid||parent group ID number|
|Etime||time elapsed since the process started|
|Args||command name with its arguments|
|Command||command being run (no arguments)|
In the Process Manager, select Attribute_Filter, from the View menu, or, to find a specific process, select Find Attribute from the Process menu.
In the Process Manager, select Sort, from the View menu.
Select the desired sort attribute from the list, then click on a button to select Increasing or Decreasing order. The None button disables ordering.
You can easily customize the information displayed by the Process Manager. The default display includes the process ID, user name, tty, and command name. You can add or delete fields as desired.
Select Customize Attributes... from the Options menu.
You can change the following:
To change the set of available attributes, see ``Viewing processes by attributes''.
You can reset to the default field widths with the Default button.
Click on Apply to update the display.
The Process Manager display includes a status labels below the main list to indicate the selected view and sort criterion used. You can configure these labels to include or exclude the actual values for these attributes.
Select Short View/Sort/Filter Labels from the Options menu. For example, the ``long'' labels would appear as follows:
View by User (root) Sort(Pid)The ``short'' labels exclude the values in parentheses.
In the Process Manager, select Find from the Process menu. Enter a pattern and use the Find Next or Find All buttons. The pattern can include standard wildcards.
All processes are assigned a priority, known as a nice(C) value. This value determines how much computing time is allocated to a process, affecting the length of time the process will take to complete.
In the Process Manager, select the process you wish to re-prioritize from the list and select Priority from the Process menu.
Click on the Raise or Lower Priority buttons and enter an increment, if desired.
In the Process Manager, select the desired process from the list and select Signal from the Process menu. The most commonly used signal is KILL, used to terminate a process.
The remaining functions are intended for more sophisticated users. See signal(S) for more information.
|ILL||illegal instruction (not reset when caught)|
|TRAP||trace trap (not reset when caught)|
|FPE||floating point exception|
|KILL||kill (cannot be caught or ignored)|
|SYS||bad argument to system call|
|PIPE||write on a pipe with no one to read it|
|TERM||software termination signal|
|USR1||user-defined signal 1|
|USR2||user-defined signal 2|
|CHLD||death of a child|
|POLL||selectable event pending|
|STOP||sendable stop signal not from tty|
|TSTP||stop signal from tty|
|CONT||continue a stopped process|
|TTIN||background tty read attempt|
|TTOU||background tty write attempt|
|VTALRM||virtual timer alarm|
|XCPU||exceeded cpu limit|
|XFSZ||exceeded file size limit|
|WAITING||all lightweight processes blocked interruptibly notification|
|LWP||signal reserved for thread library implementation|
|AIO||asynchronous I/O signal|