The OS is a program that uses various data structures. Like
all programs in execution, you can determine the
performance and other behavior of the OS by inspecting its
state - the values stored in its data structures. In this
part of the assignment, we study some aspects of the
organization and behavior of a Linux system by observing
values of kernel data structures exposed through the /proc
virtual file system.
The /proc virtual file system:
Linux uses the /proc file system to collect information
from kernel data structures. The /proc implementation
provided with Linux can read many different kernel data
structures. If you cd to /proc on a Linux machine, you will
see a number of files and directories at that location.
Files in this directory subtree each corresponds to some
kernel data structure. The subdirectories with numeric
names contain virtual files with information about the
process whose process ID is the same as the directory name.
Files in /proc can be read like ordinary ASCII files. You
can open each file and read it using library routines such
as fgets() or fscanf(). The proc (5) manual page explains
the virtual files and their content available through
the /proc file system.
Requirements in detail:
In this part, you are asked to write a program to report
the behavior of the Linux kernel. Your program should run
in two different versions. The default version should print
the following values on stdout:
• Processor type
• Kernel version
• The amount of memory configured into this computer
• Amount of time since the system was last booted
A second version of the program should run continuously and
print lists of the following dynamic values (each value in
the lists is the average over a specified interval):
• The percentage of time the processor(s) spend in
user mode, system mode, and the percentage of time the
processor(s) are idle
• The amount and percentage of available (or free)
• The rate (number of sectors per second) of disk
read/write in the system
• The rate (number per second) of context switches in
• The rate (number per second) of process creations
in the system
If your program (compiled executable) is called proc_parse,
running it without any parameter should print out
information required for the first version. Running it with
two parameters "proc_parse
India me ,suppose that hmare pass 190000 Rs hai,to kitna tax lgega,or kis heshab se lgega,
a text item is there what r the different types of triggers associated with it
To operate 4 ac of 2 tons how kva genatator need
program for reversing a selected line word by word when multiple lines are given without using strrev
What are the tools available for Debuggiu in VB?
Difference of induction motor & servo motor ??
what is electrical machines
Tell about MOM Tool(Microsoft Operator Manager)?
What is the maximum permissible Earth to Neutral voltage in an electrical system.
Is the output power different from input power.? rated input voltage” Is that the voltage we give to the driver or the voltage which comes out from the driver?
YOU ARE FOR THE ORGANISATION FROM PAST 6YRS WHY DO YOU WAN TO LEAVE THE COMPANY
What products have you designed which have entered high volume production?
what is the terminal voltage of dc series generator running at rated speed at no load?
What is the difference between spreading and striking ?
Why do we need to break a mirror, before patching, because when we go for patching, the server will be single user mode and at single user mode svc.startd demon wont be running hence SVM software also will be in disable state, there is no way it is going to impact the alternative mirror. So can you please let me know why we need to break the mirror