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Linux Proc Cpu Usage Per Process


Thanks. Which was the last major war in which horse mounted cavalry actually participated in active fighting? This site is not affiliated with Linus Torvalds or The Open Group in any way. Is there any other idea??. http://computerhelpdev.com/cpu-usage/cpu-usage-proc-linux.php

So the hour the process spent idle is also factored into the calculation (uptime - starttime). –Vilhelm Gray Jun 12 '13 at 12:36 How to get this value in Your comparison numbers will never match accurately. share|improve this answer edited May 13 '14 at 19:32 answered May 11 '14 at 22:09 Kieleth 111 You'll likely want to add further details around which version(s) of top Unix & Linux Stack Exchange works best with JavaScript enabled current community chat Unix & Linux Unix & Linux Meta your communities Sign up or log in to customize your list. have a peek here

Calculate Cpu Usage From /proc/stat

Of course 1 second for sleeping is not mandatory. Kill a process without leaving and without taking note of the PID! Extreme modification suggestions for a Wi-Fi enabled hairbrush? daemontools : a collection of tools for managing UNIX services share|improve this answer edited Jan 12 '11 at 11:12 Tshepang 18.3k54150237 answered Aug 17 '10 at 8:59 Hemant 3,39122636 3

Are the guns on a fighter jet fixed or can they be aimed? Though I do prefer to use ps with the --sort=X -o X,Y,Z using ps you can pull different stats grep for a process OR user and then total OR avg them How can we get the realtime CPU usage % for a given process? Utime Stime Linux How does President Duterte's anti-drug campaign affect travelers in the Philippines?

Why isn't the religion of R'hllor, The Lord of Light, dominant? ​P​i​ =​= ​3​.​2​ Is the binomial theorem actually more efficient than just distributing Extreme modification suggestions for a Wi-Fi enabled /proc/pid/stat Fields time It outputs user/system cpu time along with real elapsed time. I use etime over etimes in this sample, on calculations, only to be a bit more clear. http://stackoverflow.com/questions/8866158/cpu-usage-per-process i misunderstood the question.

I never saw tha tyou were splitting on ' ' instead of just whitespace, so. Linux Get Cpu Usage Of Process Thanks and regards, Andrei ajucan View Public Profile View LQ Blog View Review Entries View HCL Entries View LQ Wiki Contributions Visit ajucan's homepage! It has done so in 15.3% of its lifetime. Data retrieval ps, as well as top, uses data from files stored under /proc/ - or the process information pseudo-file system.

/proc/pid/stat Fields

http://www.atcomputing.nl/Tools/atop/ share|improve this answer answered Oct 13 '09 at 7:09 ScottZ 37717 add a comment| up vote 6 down vote I think that munin is one of the goods tools of http://unix.stackexchange.com/questions/554/how-to-monitor-cpu-memory-usage-of-a-single-process share|improve this answer answered Dec 17 '10 at 8:20 Lifeguard 1493 add a comment| up vote 0 down vote I think it's worth looking at GNU "time" command source code. Calculate Cpu Usage From /proc/stat In a true SMP environment, if 'Irix mode' is Off, top will operate in 'Solaris mode' where a task's cpu usage will be divided by the total number of CPUs. Calculate Cpu Usage From /proc/pid/stat You will get utilization for that process for past one second. (might get more complex if there are many processors) share|improve this answer edited Sep 14 '09 at 9:52 answered Sep

Does that make sense? –Dervin Thunk Jan 14 '12 at 23:22 So are you saying that 400% would equate to all 4 CPUs fully utilised by your app measured news Ultimate Australian Canal When should an author disclaim historical knowledge? Based on the info in /proc/stat you can also sample the total time for each processor and then you have all the variables you need! Join them; it only takes a minute: Sign up cpu usage per process? Calculate Cpu Utilization Formula

Should we eliminate local variables if we can? devershetty View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by devershetty 05-23-2006, 11:12 PM #5 romydmisc LQ Newbie Registered: May 2006 Posts: Usage: %s ' % os.path.basename(__file__)) sys.exit(1) def proct(pid): try: with open(os.path.join('/proc/', pid, 'stat'), 'r') as pidfile: proctimes = pidfile.readline() # get utime from /proc//stat, 14 item utime = proctimes.split(' ')[13] # http://computerhelpdev.com/cpu-usage/linux-proc-cpu-usage-percentage.php All other - thanks.

asked 4 years ago viewed 11202 times active 1 year ago Linked 78 How to calculate the CPU usage of a process by PID in Linux from C? Get Cpu Usage C++ Are you new to LinuxQuestions.org? It operates in various modes, but by default shows cpu utilization and memory usage for each process in the system.

You'll also need to read the cpu line from /proc/stat, which looks like: cpu 192369 7119 480152 122044337 14142 9937 26747 0 0 This tells you the cumulative CPU time that's

From uptime it uses the first value (uptime). If you'd like to contribute content, let us know. I added top output here, just to compare results and to be sure it's (about) correct. Cpu Jiffies Related 5Name of the process with highest cpu usage466How to measure actual memory usage of an application or process?78How to calculate the CPU usage of a process by PID in Linux

proctotal = int(utime) + int(stime) return(float(proctotal)) can be written: return float(int(utime) + int(stime)) Try not to do the same thing twice, e.g. If you must use ps, try this: ps aux | sort -nrk 3,3 | head -n 5 If you want something that's truly 'top'esq with constant updates, use watch watch "ps pgrp %d The process group ID of the process. check my blog You read the first line and process that.

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? starttime is the moment in time when the process was started, so the value stays the same throughout the life of your process. –Vilhelm Gray Jul 2 '13 at 12:39 I was trying to explain to others that you can use sort and pipe it, but ps also comes built in with an option for sorting and now I see you

process counter , 2. Can the integral of a function be larger than function itself? Parking lot supervisor Why didn't Dumbledore appoint the real Mad Eye Moody to teach Defense Against Dark Arts? Dividing rational expression?

Hacker used picture upload to get PHP code into my site asymptotic estimate for log-tan sum Kids shuffling cards Dealing with "friend" who won't pay after delivery despite signed contracts What ps aux --sort -c share|improve this answer edited May 29 '14 at 12:54 Anthon 49.1k1464128 answered May 29 '14 at 12:10 Cian D 311 add a comment| up vote 1 down share|improve this answer answered Jan 25 '12 at 4:25 Joe 21939 awk can grab you the third column with $3 I believe, I forget the syntax for it :\ intelligence agencies claim that Russia was behind the DNC hack?

Then when some process is active working with 2 threads, cpu usage can be more than 100%.