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/proc/pid/stat Fields


If the process is blocked, but not in a system call, then the file displays -1 in place of the system call number, followed by just the values of the stack But - I don't like to use external utilities in Python scripts, thus top will be removed. share|improve this answer answered Sep 14 '09 at 9:55 James Anderson 22k43364 @James - I am not able to access pidstat command in my FEDORA 9 machine. –codingfreak Sep Now after u updated it, clear. –vpram86 Sep 14 '09 at 9:22 1 @Aviator CPU % = (processusertime + processkerneltime)/(CPUusertime+CPUkerneltime) How can I get the values for "processusertime" and so

The "Locked" indicates whether the mapping is locked in memory or not. ino The inode number of the target file (in hexadecimal). Not the answer you're looking for? The following values may be written to the file: 1 (since Linux 2.6.22) Reset the PG_Referenced and ACCESSED/YOUNG bits for all the pages associated with the process. (Before kernel 2.6.32, writing

/proc/pid/stat Fields

For example on a x86_64 system: Node 0, zone DMA 1 1 1 0 2 1 1 0 1 1 3 Node 0, zone DMA32 65 47 4 81 52 28 I would factor out any temporary variables, e.g. The corresponding symbolic name can be found in /proc/[pid]/wchan. (36) nswap %lu Number of pages swapped (not maintained). (37) cnswap %lu Cumulative nswap for child processes (not maintained). (38) exit_signal %d These files are normally owned by the effective user and effective group ID of the process.

For more information, see namespaces(7). /proc/[pid]/numa_maps (since Linux 2.6.14) See numa(7). /proc/[pid]/oom_adj (since Linux 2.6.11) This file can be used to adjust the score used to select which process should be Browse other questions tagged linux or ask your own question. Most of these fields are as for inotify, except: mflags The flags associated with the mark (expressed in hexadecimal). Android Proc Pid Stat from itertools import islice def read_cpu_usage(stat_path='/proc/stat'): with open(stat_path) as stat_file: return next(stat_file) def parse_cpu_usage(cpu_stat_line): return sum(float(time) for time in islice(cpu_stat_line.split(), 1, None)) Bonus: Provide a convenience function from itertools import islice

Entries are named by memory region start and end address pair (expressed as hexadecimal numbers), and are symbolic links to the mapped files themselves. Calculate Cpu Usage From /proc/stat Also, you can have a look at getrusage system call which also return very interesting timing information. cpu_total rather than cput. Here are some of the information from the manpage copied (it is quite long): pid %d The process ID.

P.S.: Sorry, I haven't translated it to english yet. Process Cpu Usage Linux http://xmodulo.com/2012/08/how-to-measure-average-cpu-utilization.html share|improve this answer answered Mar 6 '13 at 21:39 dinesh336 411 add a comment| up vote -1 down vote top command should give you all the info you need. A value of -500, on the other hand, would be roughly equivalent to discounting 50% of the task's allowed memory from being considered as scoring against the task. I see different values down in "/proc/PID/stat" file.

Calculate Cpu Usage From /proc/stat

That's the right thing to do, but, what you do is: cputotal = 0 # count from /proc/stat: user, nice, system, idle, iowait, irc, softirq, steal, guest for i in cputimes.split(' But I feel using command strings in application programs is not good practice. /proc/pid/stat Fields linux kernel linux-kernel share|improve this question asked Jan 5 '13 at 23:19 gyre 84321022 add a comment| 1 Answer 1 active oldest votes up vote 0 down vote Try constructing a Utime Stime Linux The lscpu(1) command gathers its information from this file. /proc/devices Text listing of major numbers and device groups.

Files and directories The following list describes many of the files and directories under the /proc hierarchy. /proc/[pid] There is a numerical subdirectory for each running process; the subdirectory is named Are the guns on a fighter jet fixed or can they be aimed? tpgid %d The process group ID of the process which currently owns the tty that the process is connected to. In SELinux, this attribute is reset on execve(2) so that the new program reverts to the default behavior for any execve(2) calls that it may make. Calculate Cpu Utilization Formula

Decode using the SCHED_* constants in linux/sched.h. How to generate a 1, 2, 3, 3, 2, 1, 1, 2, 3, 3, 2, 1, ... Note the bug fix: [2:] should be [1:]. Not the answer you're looking for?

For example, assuming that -i is the flag designating an input file and -o is the flag designating an output file: $ foobar -i /proc/self/fd/0 -o /proc/self/fd/1 ... Cpu Jiffies linux share|improve this question edited Jul 24 '15 at 14:51 alexwlchan 2,44641630 asked May 24 '13 at 2:22 mSO 94331743 add a comment| 5 Answers 5 active oldest votes up vote I did this in Android, and it makes a kernel top call and gets the CPU usage for your apps PID using what top returns.

The lack of a dash before the options indicates the BSD variation of the command.

Closing files fast helps keep away from your file descriptor limit. This is also used by the 'ps' command. It takes a reading from the stat files, then it runs top, which taks a second, then it re-reads the stat files, and prints the results for that second to match Get Cpu Usage C++ If the memory is heavily fragmented, the counters for higher order chunks will be zero and allocation of large contiguous areas will fail.

The fields are ordered as for NStgid. (Since Linux 4.1.) * VmPeak: Peak virtual memory size. * VmSize: Virtual memory size. * VmLck: Locked memory size (see mlock(3)). * VmPin: Pinned That's why i think ( looked over top3.5 source code ) that "top" is more accurate then "ps". I want the solution in 'C' language. Please let me know 1.

Please click the link in the confirmation email to activate your subscription. Before Linux 3.11, bits 60-55 were used to encode the base-2 log of the page size. Read both utime and stime for the process you're interested in, and read time_total from /proc/stat. If the check denies access, then the field value is displayed as 0.

Bend the Extrusion of a text Double \ProvidesFile in LaTeX kernel. Since Linux 4.2, it is governed by the CONFIG_PROC_CHILDREN option. /proc/[pid]/timers (since Linux 3.10) A list of the POSIX timers for this process. Who ended up on the hood of the Serenity? this is from the man pages: NAME top - show system usage statistics SYNOPSIS top [-u] [-w] [-k] [-s interval] [-e | -d | -a] [-l samples] [number] DESCRIPTION top displays

write_bytes: bytes written Attempt to count the number of bytes which this process caused to be sent to the storage layer. Detect MS Windows Changing thickness of outline in QGIS Equation system with two unknown variables What would be your next deduction in this game of Minesweeper? Permission to dereference or read (readlink(2)) this symbolic link is governed by a ptrace access mode PTRACE_MODE_READ_FSCREDS check; see ptrace(2). /proc/[pid]/seccomp (Linux 2.6.12 to 2.6.22) This file can be used to Subscribed!

Up to and including Linux 2.6.35, this file is protected to allow reading only by the real UID of the process. The tfd field is the number of the file descriptor. 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 How can "USB stick" online identification possibly work?

Safe way to get a few more inches under car on flat surface Question 16 Ripple Effect What's the male version of "hottie"? Is there any other idea??. def cput(): with open('/proc/stat', 'r') as procfile: cputimes = procfile.readline() return sum(float(i) for i in cputimes.split()[1:]) Default mode is read and normally implicit. Since Linux 2.6.36, use of this file is deprecated in favor of /proc/[pid]/oom_score_adj. /proc/[pid]/oom_score (since Linux 2.6.11) This file displays the current score that the kernel gives to this process for

I need to know how to do it, "top" source code is so big for me...