#Linux process monitor how to#
#Linux process monitor code#
#Linux process monitor windows#

Import the contents of these files into a spreadsheet (for certain applications this is as easy as. logmem (pidof foo) (pidof bar) > memstats. See this answer from Stéphane Chazelas to a related question. Run these script for the duration of your test, passing the set of processes ids that youd like to monitor and redirecting its output to a log file./logcpu (pidof foo) (pidof bar) > cpustats. So it's convenient that ps does that all for you. How Does Linux Identify Processes Because Linux is a multi-user system, meaning different users can be running various programs on the system, each running instance of a program must be identified uniquely by the kernel.

#Linux process monitor code#

So, the ps code includes a series of kludges by which it determines the correct value. From comments in sysinfo.c in the procps package, one can A) include the kernel header file and recompile if a different kernel is used, B) use the posix sysconf() function, which, sadly, uses a hard-coded value compiled into the C library, or C) ask the kernel, but there's no official interface to doing that. It turns out to be ridiculously complicated to find the value of HZ (that is, jiffies per second). But what I want to achieve is to 'follow' the new processes that are created when using the computer.

#Linux process monitor how to#

So you have to determine the time at which the system booted (from /proc/stat), the number of jiffies per second on this system, and then do the math to get the elapsed time in a useful format. ProcMonUX is a simple shell script that will monitor Linux process availability, send you an email when a process is not running, and automatically restart the. How to track newly created processes in Linux Ask Question Asked 7 years, 4 months ago Modified 9 months ago Viewed 37k times 52 I know that with ps I can see the list or tree of the current processes running in the system.

This is, unfortunately, specified to be the time in jiffies (an arbitrary time counter used in the Linux kernel) since the system boot.

#Linux process monitor windows#

On Linux, the ps program gets this from /proc/$$/stat, where one of the fields (see man proc) is process start time. Applications Manager is a process monitoring tool that can avoid system outages while monitor the resources consumed by Windows & Linux processes. (with an added s) to get time formatted just as seconds, which is more useful in scripts. Or, with newer versions of the procps-ng tool suite (3.3.0 or above) on Linux or on FreeBSD 9.0 or above (and possibly others), use: ps -o etimes= -p '$$' Using -o etime tells ps that you just want the elapsed time field, and the = at the end of that suppresses the header (without, you get a line which says ELAPSED and then the time on the next line with, you get just one line with the time). This will return the elapsed time in the format hh:]mm:ss. Where $$ is the PID of the process you want to check. On Linux with the ps from procps(-ng) (and most other systems since this is specified by POSIX): ps -o etime= -p '$$'