09-24-2008
Dynamic information of Kernel using multithreading
Hi , I am new to this forum. Can someone help me on this question, I have no clue how to proceed . Its urgent..
A continuous program should print out the following dynamic information
(average of an interval). Internally, there should be two parameters with
your program, one is the probing interval and the other one is the printing
(display) interval. e.g., the probing interval could be 1 second, and the
printing interval could be 30 seconds, thus your program can calculate the
required metrics in the last 30 collected samples.(In other words-In the dynamic information part, one thread uses the probing interval to read /proc file, the second thread displays the results with a display interval.) The Program should be written in C
• The percentage of time the processor(s) spending in user mode, system
mode, and idle.
• The percentage of available memory.
• The rate of process creations in the system.
• The rate of context switches in the kernel.
• The rate of disk read/write in the system.
Thanks,
9 More Discussions You Might Find Interesting
1. Linux
hi
how can i load dynamic or shared library in linux kernel modules .
mtaghiloo@yahoo.com (0 Replies)
Discussion started by: mtaghiloo
0 Replies
2. HP-UX
I kind of forget easily. Is anyone remember the command to find kernel, memory and patches information of HPUX 11.0 machine?
Thank you! (0 Replies)
Discussion started by: Teh Tiack Ein
0 Replies
3. HP-UX
Hi all,
what do kernel modules libaudit, klog and strlog do?
Specifically I want to determine if it was possible for us to determine if kernel level auditing is enabled at all?
regards (0 Replies)
Discussion started by: slash_blog
0 Replies
4. UNIX for Advanced & Expert Users
Hi,
Can you please give me a suitable reference to learn multithreading programming in C in UNIX?
Thanks (3 Replies)
Discussion started by: naan
3 Replies
5. UNIX for Advanced & Expert Users
I have a file that reads File (X.txt)
Contents of record 1:
rdrDESTINATION_ADDRESS (String) "91 971502573813"
rdrDESTINATION_IMSI (String) "000000000000000"
rdrORIGINATING_ADDRESS (String) "d0 movies"
rdrORIGINATING_IMSI (String) "000000000000000"
rdrTRAFFIC_EVENT_TIME... (0 Replies)
Discussion started by: magedfawzy
0 Replies
6. Programming
Situation:
i have multiple pthread_create calls like this:
pthread_create(...., ThreadFunc1,.....);
pthread_create(...., ThreadFunc2,.....);
.
.
which i am using to create multiple threads.All the "ThreadFunc<i>" functions are actually calling same function "Receive" of a class using same... (3 Replies)
Discussion started by: Sastra
3 Replies
7. HP-UX
To fix an "issue" we're having I need to update SHMMAX from 1GB to 2Gb, it's a dynamic parameter so am just wondering how flexible it really is.
As Oracle is running on the server do I need to shut that down to change the parameter or will it just take the change on the fly?
Also how would I... (6 Replies)
Discussion started by: Turlock
6 Replies
8. UNIX for Dummies Questions & Answers
Hi,
I would like to do some research on the Linux kernel. Where can I find information about the current kernel development, who is working on the kernel. I looked up the change log on the kernels main page, but that doesn't help either. My goal is to find out where the focus of the current... (3 Replies)
Discussion started by: Learn4Life
3 Replies
9. Programming
I take this question of the The Linux Programming Interface: A Linux and Unix System Programming page 652 exercise 30.1
I want someone to explain the under line statement because it sounds complex to me couldn't understand anything
30-1 Modify the program (thread_incr.c) so that each loop in... (3 Replies)
Discussion started by: fwrlfo
3 Replies
LEARN ABOUT REDHAT
mpstat
MPSTAT(1) Linux User's Manual MPSTAT(1)
NAME
mpstat - Report processors related statistics.
SYNOPSIS
mpstat [ -P { cpu | ALL } ] [ -V ] [ interval [ count ] ]
DESCRIPTION
The mpstat command writes to standard output activities for each available processor, processor 0 being the first one. Global average
activities among all processors are also reported. The mpstat command can be used both on SMP and UP machines, but in the latter, only
global average activities will be printed.
The interval parameter specifies the amount of time in seconds between each report. A value of 0 indicates that processors statistics are
to be reported for the time since system startup (boot). The count parameter can be specified in conjunction with the interval parameter
if this one is not set to zero. The value of count determines the number of reports generated at interval seconds apart. If the interval
parameter is specified without the count parameter, the mpstat command generates reports continuously.
REPORTS
The report generated by the mpstat command has the following format:
CPU
Processor number. The keyword all indicates that statistics are calculated as averages among all processors.
%user
Show the percentage of CPU utilization that occurred while executing at the user level (application).
%nice
Show the percentage of CPU utilization that occurred while executing at the user level with nice priority.
%system
Show the percentage of CPU utilization that occurred while executing at the system level (kernel).
%idle
Show the percentage of time that the CPU or CPUs were idle.
intr/s
Show the total number of interrupts received per second by the CPU or CPUs.
OPTIONS
-P cpu | ALL
Indicate the processor number for which statistics are to be reported. cpu is the processor number. Note that processor 0 is the
first processor. The ALL keyword indicates that statistics are to be reported for all processors.
-V Print version number and usage then exit.
ENVIRONMENT
The mpstat command takes into account the following environment variable:
S_TIME_FORMAT
If this variable exists and its value is ISO then the current locale will be ignored when printing the date in the report header.
The mpstat command will use the ISO format (YYYY-MM-DD) instead.
EXAMPLES
mpstat 2 5
Display five reports of global statistics among all processors at two second intervals.
mpstat -P ALL 2 5
Display five reports of statistics for all processors at two second intervals.
BUGS
/proc filesystem must be mounted for the mpstat command to work.
Only a few activities are supplied by the Linux kernel for each processor.
FILES
/proc contains various files with system statistics.
AUTHOR
Sebastien Godard <sebastien.godard@wanadoo.fr>
SEE ALSO
sar(1), sadc(8), sa1(8), sa2(8), iostat(1), vmstat(8)
http://perso.wanadoo.fr/sebastien.godard/
Linux MAY 2000 MPSTAT(1)