Monday, March 21, 2011
Accurate calculation of memory utilization in Linux
Hi,
We use
ps aux | awk '{sum +=$4}; END {print sum}' to find the total memory utilization excluding the buffers and cache. This one manipulates the wrong data at some instances. No idea why .
So in addition to this we can adopt the below commands as wel..
free -m | grep "+" | awk {'print $3/$4*100'}
or more handy
U=`free -m | grep "+" | awk {'print $3'}`;F=`free -m | grep "+" | awk {'print $4'}`;echo "scale=2;$U/$F*100"| bc
There may be another ways as well. Comments please.
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