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How To Increase Cpu Usage For Testing In Linux

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For example, let the program take 30 percent of the CPU usage? current Total CPU utilization by all processes ..... Why call it a "major" revision if the suggested changes are seemingly minor? How can I convince players not to offload a seemingly useless weapon? his comment is here

General FAQ Ask a Question Bugs and Suggestions Article Help Forum Site Map Advertise with us About our Advertising Employment Opportunities About Us Ask a Question All Questions All Unanswered FAQ c cpu share|improve this question edited Dec 15 '11 at 3:44 asked Dec 14 '11 at 8:56 Ronin 65341936 2 What operating system? How can I easily double any size number in my head? I would like to extend the program to get cpu usage for all cores individually. have a peek at this web-site

How To Increase Cpu Usage For Testing In Linux

So, to get any meaningful percentage you need to average over a period such as a second.The (pseudo-)file /proc/uptime contains two numbers: the system uptime, and the CPU time "used" (wasted) Thanks a lot! We quickly came up with this code to count prime numbers: #include #include void main() { clock_t start, end; double runTime; start = clock(); int i, num = 1,

It's POSIXy code - it uses fork - so you should run that under Linux. There are definitely more interesting ways to peg the CPU. Otherwise, it just wastes that CPU time. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

Not the answer you're looking for? #pragma Omp Parallel I'm jealous. –cha0site Feb 11 '12 at 23:23 15 Augh! There is no way to control this in Standard C, it is off-topic here. How to control the CPU usage percentage?For example, let the program take 30 percent of the CPU usage?

Good, ask in a group that focuses on those systems. When I run the programs, I found the programs take 100 percent of the CPU usage and I cannot run any other program. Post your question and get tips & solutions from a community of 419,141 IT Pros & Developers. Help with a prime number spiral which turns 90 degrees at each prime Why is Rogue One allowed to take off from Yavin IV? 'sudo' is not installed, I can't install

#pragma Omp Parallel

I thought that might just be because the cycles will naturally vary from second to second, but in that case why does it report different numbers to top? http://www.dreamincode.net/forums/topic/115245-program-to-calculate-cpu-usage/ Brandenburg Concerto No. 5 in D: Why do some recordings seem to be in C sharp? How To Increase Cpu Usage For Testing In Linux This is the reason software is just as important for making computers perform optimal as hardware is. Prime95 This site is not affiliated with Linus Torvalds or The Open Group in any way.

Best regards, Davy Nov 15 '05 #1 Post Reply Share this Question 4 Replies P: n/a Castreuil Anthony Davy schreef: Hi all, I am writing programs of algorithms using C++ and this content P.S. Centering equations under align Crossreferencing verbatim What is the importance of Bézout's identity? for windows and linux :: current Total CPU utilization by all processes .....

Will Minecraft map items automatically update with terrain changes? Why shouldn’t I use Unicode characters to simulate typographic styles (such as small caps or script)? P: n/a Davy Hi all, I am writing programs of algorithms using C++ and C. weblink What we're really talking about here is "heads of execution", be they threads or processes.

The SO article you reference is computing the cpu usage of a single process as a fraction of total available jiffies. BTW, the circumstance is Windows 2k and XP. I prefer to use vmstat running in its own LXTerminal.

Get size of std::array without an instance Since New York doesn't have a residential parking permit system, can a tourist park his car in Manhattan for free?

Like Mystical said, it does show research effort and isn't as easy to answer as it would appear. –Carl Feb 12 '12 at 23:48 | show 12 more comments 7 Answers Browse more C / C++ Questions on Bytes Question stats viewed: 2702 replies: 4 date asked: Nov 15 '05 Follow this discussion BYTES.COM © 2016 Formerly "TheScripts.com" from 2005-2008 About Bytes If what I'm reading about the Cray is correct, it might be easier to port this code than the OpenMP code in the other answer. #include #include #include asked 2 years ago viewed 944 times active 2 years ago Related 329How to determine CPU and memory consumption from inside a process?139How to get the CPU Usage in C#?1How to

One measure for CPU performance could be instructions per second, but then again instructions aren't created equal on different CPU architectures. Thanks! Come one, running a single threaded program on a n-core machine and asking why it uses 1/n of the the cpu is just... check over here Thanks!BTW, the circumstance is Windows 2k and XP.

Calculated 9592 primes. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Clone yourself! You could use the clock function, returning a clock_t (some integer type, like perhaps long).

It sounds strange, I know. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Thanks for pointing that out. :) –Mysticial Dec 14 '11 at 9:41 add a comment| up vote 1 down vote It is usually operating system specific. Sign in using Search within: Articles Quick Answers Messages Use my saved content filters home articles Chapters and Sections> Search Latest Articles Latest Tips/Tricks Top Articles Beginner Articles Technical Blogs Posting/Update

Keeping someone warm in a freezing location with medieval technology How do I dehumanize a humanoid alien? It doesn't know how long it's been since you called it last. Thanks! These can be used to measure the amount of CPU time taken between two time intervals.

And sometimes it's actually impossible. –cha0site Feb 11 '12 at 22:23 Well I guess it won't be as hard as getting the program to work for the Cray as But you can, and should. Since New York doesn't have a residential parking permit system, can a tourist park his car in Manhattan for free? 3% personal loan online. It is a very simple and effective framework for making up parallel programs.

Do Air Traffic Controllers have to remember stall speeds for different aircraft? The real time is the time the program has been running. When I got home I decided to try it on my hex-core modern gaming PC, and this is where we get our first issues. Hot Network Questions What would be a good choice for a controlled opposition?

What's the purpose of the same page tool? Executing task A may favor one CPU over another, while executing task B it can easily be the other way around (since the two CPUs may have different resources internally and Is it possible to get a professor position without having had any fellowships in grad school?