cpu,mem usage

[vti]

Hi,
I use ps command to see usage of mem or cpu and sort it as bigger to smaller count .But is there a way to calculate total count of usage.I mean ;

%CPU
283.0
63.3
12.4
6.9
6.6
5.5
+ 5.4
-------
?

How can i find to total count of cpu usage without using Top or something different utility.I want to usa a script for this

Thanks a lot.

 

[bjverzal]

Be sure what you are doing is correct first...283% of CPU ? How are you getting that number ?

Here is a basic script...

#!/bin/ksh
x=0
y=0
for i in `ps aux

http://www|grep

-v "%CPU"|grep -v kproc|awk {'print $3'}`
do
x=`echo "scale=2;$x+$i"|bc -l`
y=`expr $y + 1`
done

z=0
for i in `ps aux

http://www|grep

-v "%CPU"|grep -v kproc|awk {'print $4'}`
do
z=`echo "scale=2;$z+$i"|bc -l`
done

echo "Total processes: $y"
echo "Total RAM resources: $z"
echo "Total CPU resources: $x"


Bill.

 

[vti]

Hi bjverzal
Thanks for answer. 283% is the cpu usage of my database on unix.

CPU part of script works well but the mem usage didn't work ,i think it happens because of u use two times %CPU, i changed the %CPU as %MEM but didn't work.Do i need to kproc as well.

Thanks.

 

[KenCunningham]

Seems to me there's a red herring here. The 283% is spurious as the other figs add up to 100.1% - more like something you would expect to see accounting for rounding errors. Exactly how are you deriving this data?

 

[vti]

But i got 6 cpu on my machine so i don't think is too much .