linux performance share|improve this question asked Jan 14 '12 at 23:12 Dervin Thunk 6,7051366144 Is top sufficient for your purposes? –Oliver Charlesworth Jan 14 '12 at 23:16 Did you try just piping it without that? –Caleb May 29 '11 at 5:56 1 Will do. Parking lot supervisor Why didn't Dumbledore appoint the real Mad Eye Moody to teach Defense Against Dark Arts? I mean there are BIG differences between output of ps and top in cpu utilization...Don't know what to do. Source
You only get back a single line for the PID you requested.. –GR Envoy Jun 30 '16 at 0:52 1 "I have seen this take 3+ seconds" => This is While top is a monitoring tool, ps is a snapshot tool. Does this make any sense. A single word for "the space in between" Why does the `reset` command include a delay?
Join them; it only takes a minute: Sign up cpu usage per process? Code: #!/bin/bash # # Process control # # This shell-script watch that
One could use times provided by ps and calculate CPU usage from this. You have some files in root of /proc/ that have various information about the overall state of the system. Also I add %cpu for "fun". Utime Stime Linux Where is the barding trick?
from itertools import islice __all__ = ['CPUUsage', 'get_cpu_usage'] _instance = None def _get_instance(): global _instance if _instance is None: _instance = CPUUsage() return _instance def get_cpu_usage(): return _get_instance().get() class CPUUsage(object): def Linux Get Cpu Usage Of Process Only part of texture paint is pink What happens to a radioactive carbon dioxide molecule when its carbon-14 atom decays? if take a look here: stackoverflow.com/questions/23367857/… "According the htop source code" - need to calculate total spent CPU time, including idle, irc etc. How can we get the realtime CPU usage % for a given process?
This could be useful to calculate CPU usage over a longer period. http://unix.stackexchange.com/questions/554/how-to-monitor-cpu-memory-usage-of-a-single-process asked 5 years ago viewed 156680 times active 2 months ago Linked 1 List 10 main CPU-consuming process 1 Is there a way of seeing the CPU usage of the programs Calculate Cpu Usage From /proc/stat This site is not affiliated with Linus Torvalds or The Open Group in any way. Calculate Cpu Usage From /proc/pid/stat You should put the sleep(1) as the first thing inside the loop, or, while you are using top as a test, you should comment out the sleep(1) because the top call
Thanks for your replies. http://smartnewsolutions.com/cpu-usage/linux-command-get-cpu-usage-process.html You should split on whitespace, and count fields, instead of counting spaces.... Contact Us - Advertising Info - Rules - LQ Merchandise - Donations - Contributing Member - LQ Sitemap - Main Menu Linux Forum Android Forum Chrome OS Forum Search LQ No dash in the options. Calculate Cpu Utilization Formula
My top doesn't seem to have a batch mode, which is quite limiting. effect is, you will get averrage load on specfied time period. Example of compact operators in quantum mechanics Encryption - How to claim authorship anonymously? have a peek here haertig View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by haertig 07-04-2006, 09:00 AM #7 ajucan LQ Newbie Registered: Jul 2006 Location:
What's the male version of "hottie"? Get Cpu Usage C++ 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 As in the example above.
I never succeed in thickening sauces with pasta water. Cheers. –boehj May 29 '11 at 12:05 | show 2 more comments up vote 3 down vote Note that current versions of ps have sorting ability within them, based on field cpu_total rather than cput. Cpu Jiffies First column is name, second processor, third, %cpu.
This is a different value than I calculated using above method. My problem is just a little more complex, i'm trying to find Peak CPU usage and average CPU usage of a particular process. share|improve this answer answered Sep 11 '14 at 6:58 ensonic 2,369919 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign http://smartnewsolutions.com/cpu-usage/display-cpu-usage-process-linux.html I mentioned the second parameter of /proc/uptime to indicate how to calculate the total CPU usage of the system as a whole rather than a single process; since we are only
If you have it installed, htop allows you more fine-grained control, including filtering by—in your case—CPU. What am I doing wrong? I have posted an answer to my question please check it –mSO Jul 1 '13 at 13:31 1 @T-D The uptime I use in the equation is the first parameter This is not ideal, and it does not conform to the standards that ps otherwise conforms to.
systeminfo.c */ #include
Data retrieval ps, as well as top, uses data from files stored under /proc/ - or the process information pseudo-file system. Why isn't the religion of R'hllor, The Lord of Light, dominant? Pi == 3.2 Is the binomial theorem actually more efficient than just distributing Extreme modification suggestions for a Wi-Fi enabled How does President Duterte's anti-drug campaign affect travelers in the Philippines? Extreme modification suggestions for a Wi-Fi enabled hairbrush?
Join them; it only takes a minute: Sign up How to calculate the CPU usage of a process by PID in Linux from C? ps aux | sort -nrk 3,3 | head -n 5 –syss May 12 '16 at 10:42 add a comment| up vote 27 down vote The correct answer is: ps --sort=-pcpu | On most distros, it's pretty simple to install using Yum or apt-get. –Stefan Lasiewski Aug 17 '10 at 20:48 @Stefan if you want to to check remotly you can Thank you Facundo.
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