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This will print only the numbers you are expected to see.
As per your input it should print 97 twice.
From there its fairly easy to do the calculation yourself.


perl -0lne...

How about this?
awk '/^PSOldGen/{getline;match($0,/[0-9]*\%/);if(int(substr($0,RSTART,RLENGTH-1)) > 98 ){print $0}}' filename

check the below code is working or not...


grep -A 1 "PSOldGen" filename


if the above code is giving the output (with the next line ).. then we can easily count the no. of occurance which...