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Full Discussion: Cpu and memory usage scripts
Top Forums Shell Programming and Scripting Cpu and memory usage scripts Post 302990131 by Chubler_XL on Sunday 22nd of January 2017 03:06:38 PM
Old 01-22-2017
You could run the check from cron every minute and keep a count of the number of times the CPU is high in a dat file then you can warn via email if the CPU is high for more than x checks and also notify when it normalises again.

I run something like this myself:

Code:
#!/bin/bash
CHKFILE=/usr/wrk/CPU.dat
LIMIT=25
CMAX=5
USAGE=$(sar 5 6 | grep "Average")
IDLE=$(echo $USAGE | awk '{printf "%.0d", $8}')

# Read in number of past checks that have exceeded $LIMIT
[ -f $CHKFILE ] && read CPUCNT < $CHKFILE
CPUCNT=${CPUCNT:-0}

[ -z "$IDLE" ] && exit

if (( IDLE < LIMIT ))
then
   ((CPUCNT++))
   ((CPUCNT >= CMAX)) &&
   mailx -s "Sustained high CPU usage: $((100 - IDLE))%" anil@domain.com <<EOF
$(echo $USAGE | awk '{printf "User: %s%%, Nice: %s%%, System: %s%%, I/O Wait: %s%% Steal %s%%\n", $3, $4, $5, $6,$7,$8}')
EOF
else
   ((CPUCNT >= CMAX)) &&
   mailx -s "CPU usage normalised: $((100 - IDLE))%" anil@domain.com <<EOF
$(echo $USAGE | awk '{printf "User: %s%%, Nice: %s%%, System: %s%%, I/O Wait: %s%% Steal %s%%\n", $3, $4, $5, $6,$7,$8}')
   CPUCNT=0
EOF
fi

echo "$CPUCNT" > $CHKFILE

Edit:
In a similar way you can use sar -r 5 6 (5 readings averaged over 6 seconds each) to monitor memory usage - Look at column #4 for pct memory used.
The counts for number of readings exceeding limit could be stored in the same data file.

Last edited by Chubler_XL; 01-22-2017 at 04:21 PM..
 

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IDLE(1) 						      General Commands Manual							   IDLE(1)

NAME
IDLE - An Integrated DeveLopment Environment for Python SYNTAX
idle [ -dins ] [ -t title ] [ file ...] idle [ -dins ] [ -t title ] ( -c cmd | -r file ) [ arg ...] idle [ -dins ] [ -t title ] - [ arg ...] DESCRIPTION
This manual page documents briefly the idle command. This manual page was written for Debian because the original program does not have a manual page. For more information, refer to IDLE's help menu. IDLE is an Integrated DeveLopment Environment for Python. IDLE is based on Tkinter, Python's bindings to the Tk widget set. Features are 100% pure Python, multi-windows with multiple undo and Python colorizing, a Python shell window subclass, a debugger. IDLE is cross-plat- form, i.e. it works on all platforms where Tk is installed. OPTIONS
-h Print this help message and exit. -n Run IDLE without a subprocess (see Help/IDLE Help for details). The following options will override the IDLE 'settings' configuration: -e Open an edit window. -i Open a shell window. The following options imply -i and will open a shell: -c cmd Run the command in a shell, or -r file Run script from file. -d Enable the debugger. -s Run $IDLESTARTUP or $PYTHONSTARTUP before anything else. -t title Set title of shell window. A default edit window will be bypassed when -c, -r, or - are used. [arg]* and [file]* are passed to the command (-c) or script (-r) in sys.argv[1:]. EXAMPLES
idle Open an edit window or shell depending on IDLE's configuration. idle foo.py foobar.py Edit the files, also open a shell if configured to start with shell. idle -est "Baz" foo.py Run $IDLESTARTUP or $PYTHONSTARTUP, edit foo.py, and open a shell window with the title "Baz". idle -c "import sys; print sys.argv" "foo" Open a shell window and run the command, passing "-c" in sys.argv[0] and "foo" in sys.argv[1]. idle -d -s -r foo.py "Hello World" Open a shell window, run a startup script, enable the debugger, and run foo.py, passing "foo.py" in sys.argv[0] and "Hello World" in sys.argv[1]. echo "import sys; print sys.argv" | idle - "foobar" Open a shell window, run the script piped in, passing '' in sys.argv[0] and "foobar" in sys.argv[1]. SEE ALSO
python(1). AUTHORS
Various. 21 September 2004 IDLE(1)
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