BANGKOK CHRISTIAN COLLEGE

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BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
Operating Systems Process Explorer
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
Operating Systems gtgt Processes In This Class we
will be learning about Processes
Some of the ICT terminology we will learn about
includes
Process Thread Path Handle
CPU I/O DLL Byte
We will use the Netschool Software for quick
interactive class participation. Example What
primary Operating System do you use at home?
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
Q What is a Process

1. A process is a program running on your computer.

2. Processes take up computer resources (RAM, CPU
and Disk Space)
Example Microsoft Word is a Process. 1. It runs
on your computer and 2. It takes up memory (RAM)
and CPU. Open MS Word
Regular versus Background Processes
A Regular Process has a window associated with
it. A Background Process does not. Window
regular process. Windowless background
process. Q Is MS Word a Regular Process or a
Background Process?
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
Problem Windows Gives up Limited
Access/Information

1. We can see how many regular processes are running
   but how can we know how many background processes
   are running?

2. Also, we do not have a lot of information
about the processes. Q How much CPU and memory
is MS Word taking up? Q Where is the program
located on the disk? (path) Q Who manufactured
the program? Q How do we know this is a
legitimate process and not a virus? Q What if
this process crashes what can we do about it?
A Process Explorer!
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
Q What is Process Explorer?
It is a program which allows you low level access
to the programs running on your computer.
Process Explorer or (PE) has 3 main advantages
1. PE can give us more information about our
computer.

• Shows us exactly what our computer is doing.

Slow Computer? Processes take up computer
resources. The more processes running the more
system resources are taken up and the slower your
computer will run. PE Shows us exactly how many
processes are running and how much system
resources they are consuming
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
2. PE gives us more control over our computers.

• Program Crash? PE can help recover

• Use the computer as a tool rather than a
  consumer device.

• Computer Viruses? PE can help detect and remove
  them.

3. PE acts as a knowledge gateway
Using PE you can start to understand more about
computers and how they really work.
OK so PE is great, where do I get it?
http//technet.microsoft.com/en-us/sysinternals/
bb896653.aspx
History Part of Windows Now Mark sold his company
to MS for 18M Technet is MS site for
developers Free tool
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
Download Process Explorer to your Desktop
To save time, PE is already downloaded on our
network.
1. Copy the FOLDER from e\sysinternals to your
desktop
2. Find the file procexp.exe. Run it.
3. Open the Microsoft Word Process. (Start-gtAll
Programs-gt Microsoft Office-gt Microsoft Word)
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
1. PE can give us more information about our
computer.

• Shows us exactly what our computer is doing.

This list shows every program running on your
computer right now.
We can see 1. regular processes (with windows in
the taskbar) 2. background processes (with no
windows)
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
1. PE can give us more information about our
computer.
So what information are we looking at? 4 columns
1
2
3
4
3. Company Name
1. Process
This is the filename of the process. Always ends
in .exe Example WINWORD.EXE
This is the name of the company that wrote the
application. Who wrote WINWORD.EXE?
2. PID
4. Description
PID Process Identification Number Every process
gets a unique PID. Why? So Windows knows how to
find it, like a student ID number.
This is a plain text based description of the
process. Q How is the Description different than
the Process Name Field?
3 questions
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
1. PE can give us more information about our
computer. gt 2. Processes Take up system Resources
1. Working Set (Memory)
This is the amount of memory (RAM) that the
process is taking up in your computer.
Open and Successively close 4 MS Word
documents, watch how working set size increases
and decreases. Split screen into left PE right
word.
2. CPU
This is how much CPU time the process is taking
up (in percentage). Processes that perform
calculations take up a lot of CPU time heavily
CPU intensive Which process is taking up the
most CPU time?
p pi 3.14159265
Click on the CPU column to sort by CPU Usage
Open SuperPi introduce it, show the spike
while calculating
3 questions
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
1. PE can give us more information about our
computer. gt 2. Processes Take up system Resources
3. PE Shows us how various processes are related
Child Process, Parent Process
Successively click on Process Column 3 times
Collapse the System process tree.
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
1. PE can give us more information about our
computer. gt 2. Processes Take up system Resources
What about the Windows Task Manager?
Advantages of PE versus Task manager - can see
more processes - you can see the relationships
of the processes - you can see a LOT more
information about processes Compare Windows
Task manager to PE side by side Example
description or company name. Look at a process
running in Task manager, we dont know what it
means. PE Shows us
So If PE is so great, why is it not default part
of windows?
2 Disadvantages 1. PE takes up some resources in
itself Demonstrate 2. Maybe too much
control for average users (technet).
1 questions
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
1. PE can give us a LOT more information about
our computer
We can get HIGHLY SPECIFIC details about an
individual process
Information 1. Program Icon 2. Program name 3.
Company 4. Version 5. Time 6. Path 7. Command
Line 8. Current Directory 9. Parent 10. User 11.
Started 12. Comment 13. DEP
Commands 1. Verify 2. Bring to Front 3. Kill
Process
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
1. PE can give us a LOT more information about
our computer
We can get HIGHLY SPECIFIC details about an
individual process
What is a path? A A path is where the process is
located on the disk (hard drive) Open Explorer,
show a path What does Verify do? -Verify if this
is a genuine process or not -Does not always
work -Can give a hint to viruses Verify
WINWORD Kill Process Remember PE can give
your more control over your computer. If an
application becomes frozen or non- responsive.
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
1. PE can give us more information about our
computer Threads are small processes, many
thread make up one process. Like the threads in a
shirt.
Open Firefox with many windows BCC-ICT to
show threads
More Information Performance Graph TCP/IP Strings
etc
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
2 (7 checks)
To Setup Process Explorer
View Menu -gt Select Columns
1 (5 checks)
2
21 Combo boxes to check
4 (6 Checks)
3 (3 Checks)
1
4
3
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
The System Information Summary Window
View -gt System Summary
This windows shows the activity of ALL the
processes working together. We see all the
activity on the computer. 3 large graphs -
CPU - I/O bytes - Physical Memory History Total
Statistics -Number of Threads -Number of
Processes -Number of Handles -Physical
Available Memory
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
I/O
1. I/O Means Disk Access Copy a Large File and
watch I/O Streaming 2. CPU Means processing Pi
One other CPU Intensive Program together. 3.
Physical is the amount of memory being used.
Open a large Photoshop file, apply a filter, close
1 questions
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Process Explorer
BANGKOK CHRISTIAN COLLEGE English Immersion
Program Mathayom Department
Computer Information Technology Class Teacher
David
Now its your turn to learn Process Explorer
1. Process Explorer- Questions.doc Example. How
many threads are running on your computer? 2.
Process Explorer Crossword.html All of the
answers can be found in this power point
presentation!
1 questions