Detailed description of Task Manager 1

(I,Overview and menu

 

Task Manager provides information about programs and processes running on your computing. It also displays the unit of the most commonly used metric process performance.

Use the task manager to monitor key indicators of computer performance. You can view the status of a running program and terminate the program that has stopped responding. You can also use up to 15 parameters to evaluate the activities of Running Processes and view the graphics and data that reflect CPU and memory usage.

In addition, if you are connected to the network, you can view the network status to understand the network running status.

If multiple users connect to your computer, you can see who is connected, what they are doing, and send messages to them.

1,Change display options in Task Manager

1. Click the tab corresponding to the display option to be changed. Click:
   • The "application" Tab allows you to view details, large icons, or small icons.
   • On the process tab, you can select the columns to display.
   • On the "performance" tab, you can change the CPU usage record curve and display the Kernel Time.
   • "Network" tab to view network connection information.
2. Click the required command on the View menu.

Note:

• To display the kernel time so that you can add a red line in the "CPU usage" and "CPU usage history" curves, click the "performance" tab. On the View menu, Click Show Kernel Time ". The red line indicates the number of CPU resources occupied by kernel operations.

2,Update Task Manager data

• On the "View" menu, click "Refresh now ".

Note:

• To change the frequency of automatic data update, point to "update speed" in the "View" menu and click the required command.
• To temporarily fix the data displayed in the "Task Manager", point to "update speed" in the "View" menu and click "pause ".
• By default, data is automatically updated every two seconds.

(Ii) the applications tab displays the status of programs running on the computer. On this tab, you can end, switch, or start the program.

 

1,Start new programs

1. Click new task on the Application tab ".
2. In the open box, type or select the name of the program to be added, and click OK ".

Note:

• The "New Task" is equivalent to the "run" command in the "Start" menu.
• If you do not know the name of the program to be added, Click Browse to search for the program.

2,Switch to another program

• On the Application tab, click the program to switch to, and then click switch ".

3,Change the priority of a running program

• On the process tab, right-click the program to be changed, point to set priority, and click the required command.

Note:

• To view the priority of a running program, click "Select column" on the "processes" tab ". In the Select column dialog box, select basic priority and click OK ".
• Changing the priority of a process can make it run faster or slower (depending on whether the priority is increased or decreased), but it may also have the opposite impact on the performance of other processes.

4,Use Task Manager to terminate a program

• On the applications tab, click the program to terminate and then click end task ".

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• Any unsaved input data or changes made in the program will be lost.
• If you cannot end the program immediately by using end task, you can click the program to terminate, and then click go to process to operate on the process tab.

(3) The processes tab displays information about running processes on the computer. For example, you can display information about CPU and memory usage, page errors, handle counts, and many other parameters.

 

1,Process counter Column Title

On the processes tab, you can use the following counters to monitor running processes. These counters can be displayed as Column Titles. To display a process as a column title, click Select column in the View menu ". Select the check box corresponding to the process that you want to display as the column title.

 

• Basic priority

Determines the priority of the processing thread sequence of the processor. You can use task manager to view and change the basic priority.

For "message queue", it is the attribute that specifies the priority of the queue in the public queue. You can set the basic priority from-32,768 to 32,767. The default priority is 0. Dedicated queue does not support basic priority. "Message Queue" Routes and transmits messages based on the basic priority, and then routes and transmits messages based on the message priority.

• CPU time

In task manager, the total processor time used by a process from startup, in seconds.

• CPU usage

In task manager, the CPU usage percentage of the process since the last update. On the process tab of task manager, the column title is "CPU ".

• GDI object

The object from the "Graphics Device Interface" (GDI) library of the application programming interface (API), used for graphics output devices. In task manager, it refers to the number of GDI objects currently used by the process.

• Handle count

In task manager, the object handle in the process object table. (Handle: in the user interface, it refers to the interface added to an object to facilitate the operation of moving, adjusting the size, adjusting the shape or other functions of the object. In program design, it refers to the pointer, that is, the mark that allows a program to access the recognized resources .)

• Image name

The process name in task manager, that is, the image name ".

• I/O others

In task manager, the number of non-read, non-write input/output operations generated by processes, including files, networks, and device I/O. An example of this operation type is a control function. "Other Types of I/O" pointing to the console (console input object) handle is not included.

• Other I/O bytes

In the task manager, the number of bytes transmitted in non-read, non-write input/output operations generated by the process, including files, networks, and device I/O. An example of this operation type is a control function. Other types of I/O bytes directed to the console (console input object) handle are not included.

• I/O read

In task manager, the number of read input/output operations generated by processes, including files, networks, and device I/O. An example of this operation type is a control function. "I/O read Operations" directed to the console (console input object) handle are not included.

• I/O read bytes

In task manager, the number of bytes read from input/output operations generated by processes, including files, networks, and device I/O. An example of this operation type is a control function. "I/O read bytes" directed to the console (console input object) handle is not included.

• I/O write

In task manager, the number of input/output operations generated by processes, including files, networks, and device I/O. An example of this operation type is a control function. "I/O write operations" directed to the console (console input object) handle are not included.

• I/O write bytes

In task manager, the number of bytes written in input/output operations generated by processes, including files, networks, and device I/O. An example of this operation type is a control function. The "I/O write bytes" directed to the console (console input object) handle is not included.

• Memory usage

In task manager, the current working set of a process is in kilobytes. The current working set is the number of pages currently resident in the memory. On the "Task Manager Process" tab, the column title is "memory usage ".

• Memory usage Delta

In the task manager, the amount of memory used since the last update is measured in kilobytes.

• Non-Paging pool

The operating system memory of the disk will never be displayed. Page scheduling is to move the rarely used program's working memory from Ram to other storage media, usually hard disks. In task manager, the memory used by the process is measured in KB.

• Page Error

An interruption occurs when the software attempts to read or write a virtual memory location marked as "nonexistent.

In "Task Manager", a page error occurs when the data in the process is not in memory and must be retrieved from the disk. The page error value starts from the start time of the process.

• Page Error Increment

In task manager, the number of page errors since the last update changes.

• Paging pool

Virtual Memory allocated by the system that has been assigned to the process and can be paged. Page scheduling is to move the rarely used program's working memory from Ram to other storage media, usually hard disks. In task manager, the number of Virtual Memory allocated by the system used by the process is measured in KB.

• Peak memory usage

In task manager, the peak value of physical memory in the process since the process is started.

• PID (process identifier)

A digital identifier that uniquely identifies a running process. Use the task manager to view the PID.

• Session ID

The "Terminal Service" session ID that owns the process. You can use a counter only when the "Terminal Service" counter is installed.

• Thread Count

Number of threads running in the process in the task manager.

• User Name

Enable Windows to identify the unique name of the user account. The account username must be unique among other group names and usernames in its own domain or workgroup. (User: special group of all users with user permissions on the server. When a Macintosh user assigns permissions to each user, these permissions are also assigned to the Group's users and guests. )

• User object

Window Manager objects, including windows, menus, cursors, icons, abnormal branches, accelerators, monitors, keyboard la S, and other internal objects. In "Task Manager", it refers to the number of user objects currently used by the process.

• Virtual Memory size

In task manager, it refers to the number of virtual memory or address space allocated to the process.

(Virtual Memory: the temporary memory used by the computer to run programs with a memory larger than the computer's memory. For example, a program can access the 4 GB virtual memory on the hard drive of a computer, even if the computer only has 32 mb ram. Program data that is not currently loaded into computer memory will be saved to the page file .)

(Page file: a hidden file on the hard disk. Windows uses this file to store programs and data files that cannot be loaded into memory. Page files and physical memory or RAM constitute virtual memory. When necessary, Windows moves data from the page file to the memory, and then moves the data from the memory to the page file to free up space for new data. Page files are also called swap files. )

 

2,Process counter Column Title

1. On the process tab's View menu, click Select column ".
2. Select the check box corresponding to the process counter that you want to display as the column title, and click OK ".

Note:

• For more information about process counters, click related topics ".

3,Sort the Process List

• On the process tab, click the column title you want to sort based on.

Note:

• To reverse the sorting order, click the column title again.

4,Use Task Manager to terminate a process

• On the process tab, click the process to end, and then click end process ".

Key Points

• Be careful when terminating the process. If you end the application, you will lose the unsaved data. If the system service is terminated, some parts of the system may not work properly.

Note:

• To end a process and all processes directly or indirectly created by it, right-click the process to end on the process tab, and click End Process tree ".

  If the process tree of the email program (such as Microsoft Outlook) is terminated, related processes, such as mapisp32.exe, are also terminated.

5,Assign process to processor

• On the processes tab, right-click the program you want to assign, click Set affinity, and then click one or more processors.

Note:

• The Set affinity command is only available on a multi-processor computer.
• You can use the "set affinity" command to limit the execution of programs or processes on the selected processor, and may cause overall performance degradation.

(Iv) The performance tab displays a dynamic overview of computer performance, including:

• CPU and memory usage charts.
• The total number of running handles, threads, and processes on the computer.
• Total physical, core, and recognized memory (KB ).

Note:View computer performance

• Click the performance tab.

Note:

• The performance tab displays information about computer performance, such as CPU and memory usage.
• For more information about the fields displayed on the performance tab, click related topics ".

 

1,CPU usage

A chart showing the percentage of processing time. This counter is the main indicator of processor activity. View the chart to know the processing time you are currently using. If your computer looks slow, the chart displays a high percentage.

 

2,CPU usage records

A chart showing CPU usage changes over time. The sampling status shown in the chart depends on the "update speed" value you selected on the "View" menu. Possible values for update:High= Twice per second;Normal= Every two seconds;Low= Once every four seconds;Pause= The monitor is not automatically updated.

 

3,PF usage

The number of page files being used by the system. If the computer is running close to the maximum limit, you can increase the page file size.

 

4,Page file usage record

A chart showing the changes of the page file volume over time. The sampling status shown in the chart depends on the "update speed" value you selected on the "View" menu.

 

5,Total

The total number of running handles, threads, and processes on the computer.

 

6,Execution memory (k)

Memory allocated to programs and operating systems. Because the memory (called Virtual Memory) Of the file copied to the page exists, the values listed in "peak" can exceed the maximum physical memory. The value of "Total" is the same as the value displayed in the "page file usage record" chart.

 

7,Physical memory (k)

The total physical memory installed on the computer, also known as Ram. "Available" indicates the amount of memory available. "System cache" displays the physical memory of the page currently used to map opened files.

 

8,Kernel memory (k)

Memory Used by the operating system kernel and the device driver. "Pagination" refers to the memory that can be copied to the page file, thus releasing the physical memory. Then, the physical memory can be used by the operating system. "Non-Paging" is the memory stored in the physical memory and will not be copied to the page file.

 

(V) The network tab displays the graphical representation of network performance. It provides simple and qualitative indicators to show the status of the network running on your computer. The "network" tab is displayed only when the NIC exists.

On this tab, you can view the quality and availability of network connections, whether connected to one or more networks.

 

Note:View Network Connections

• Click the networks tab.

Note:

• The "network" tab is displayed only when the NIC exists.
• The Network tab specifies the network traffic of the connection to the local computer. For more information, click related topics ".

The networks tab provides instructions on the network traffic connected to the local computer. By referring to it, you can quickly determine the amount of network bandwidth being consumed. When multiple network connections are used, you can use the tab to easily compare the traffic of each connection.

If your computer has multiple NICs, the chart displays a composite index containing all networks to indicate all network traffic.

To display visible lines in the network traffic charts of all interfaces, the view scales automatically to enlarge the relationship view between traffic and visible bandwidth. In this way, when the traffic is low, the full height of the chart can only represent 5% of the available bandwidth. When the traffic is higher than this level, the scaling degree decreases to display the current traffic view at a lower magnification (for example, display 10% of the total available bandwidth ). The larger the percentage displayed on the chart, the smaller the magnification of the traffic (relative to available bandwidth. The scaling factor is displayed on the chart. To disable the zoom function, click auto zoom on the options menu to switch the zoom factor value.

You can also change the column title displayed under the chart. These headers are described in the following table.

 

Column name	Enabled by default?	Description
Nic name	Yes	The name of the network adapter in the "Network Connection" folder.
Adapter description		The relevant description of the adapter, usually the same as the device name in the network connection folder.
Network Utilization		Network Utilization percentage, based on the initial connection speed of the interface.
Link speed		The interface connection speed derived from the initial connection speed.
Sending byte Throughput		The percentage of connection bandwidth used for the traffic sent from the computer within the polling time period.
Received byte Throughput		The percentage of connection bandwidth used by the computer to receive traffic within the polling time period.
Byte Throughput		Percentage of connection bandwidth used for sent and received traffic within the polling time period.
Number of bytes sent		The total number of bytes sent over the connection so far. Accumulative, can be reset.
Number of bytes received		The total number of bytes received by the connection so far. Accumulative, can be reset.
Total Bytes		The total number of bytes sent and received over the connection so far. Accumulative, can be reset.
Sent Bytes/Interval		The total number of bytes sent by the connection within the polling time period.
Number of bytes received/Interval		The total number of bytes received by the connection during the polling time period.
Bytes/Interval		The total number of bytes sent and received by the connection during the polling interval.
Number of unicast messages sent		The total number of bytes that higher-level protocol requests send to the unicast address. This value includes discarded or unsent packets.
Received unicast count		The total number of bytes received from the unicast address for higher-level protocol requests.
Unicast count		The total number of "sent unicast" and "received unicast" so far.
Number/interval of unicast messages		The total number of bytes that are sent to the subnet Unicast address by higher-level protocol requests over the connection within the polling interval.
Received unicast count/Interval		The total number of bytes transmitted from the subnet Unicast address to the higher-level protocol through this connection during the polling interval.
Unicast count/Interval		The total number of "sent unicast count" and "received unicast count" of the connection during the polling interval.
Number of non-Unicast messages sent		So far, the total number of bytes sent by higher-level protocol requests to non-subnet unicast addresses through this connection.
Number of received non-Unicast instances		The total number of bytes transferred from a non-subnet Unicast address to a higher-level protocol so far through this connection.
Non-Unicast count		The total number of "sent non-Unicast count" and "received non-Unicast count" so far.
Number/interval of non-Unicast messages		The total number of bytes that are sent to a non-subnet Unicast address by higher-level protocol requests over the connection within the polling interval.
Received non-Unicast count/Interval		The total number of bytes that are transmitted from a non-subnet Unicast address to a higher-level protocol through this connection during the polling interval.
Non-Unicast count/Interval		The total number of "sent non-Unicast count" and "received non-Unicast count" within the polling interval.

 

(6) The users tab displays the users who can access the computer, as well as the session Status and name. "Client name" specifies the name of the client that uses the session (if any ). Sessions provide you with the name of a task used to execute tasks such as sending messages to another user or connecting to another user session.

The "user" tab appears only when the "quick User Switching" feature is enabled on your computer and is a member of a working group or an independent computer. The users tab is unavailable for computers that are members of the network domain.

 

Note:View User Activities

• Click the users tab.

Note:

• If "quick User Switching" is enabled, the "user" tab is displayed. For more information about "quick User Switching", click "related topics ".
• "Quick User Switch" is available only when the computer used is a member of a working group or an independent computer. On a computer that belongs to a network domain, "Quick User Switching" is unavailable.

Each field on the "user" tab is described as follows. For details, click one of the following items:

1,User

Displays the user logging on to the computer.

 

2,ID

Displays the Number ID of the session that identifies the computer.

 

3,Status

Displays the current session status. In task manager, the session status may be "running" or "disconnected ".

 

4,Client name

If yes, specify the name of the client that uses the session.

 

5,Session

Displays the session name on the computer.