At first I started to read the file and processing. But why I choose these path is

 Tue Oct 13 00:00:01 2015|1008|959788857688|123580|Tue Oct 13 00:00:01 2015|Tue Oct 13 00:00:01 2015|CMT|Undelivered|none|Submit|0|SMSC_PR_LC_SMSC_InvalidDestAddress|GSM|INVALID|16 Bit|140|140|no||no|no||1/2|No|NO|no|no|0|1|0|0||959790000028||8|0||0|no|no|default_billing|-1|0|no|no|1|1|1|1|0|1|0|0|||||Wed Oct 14 00:00:01 2015|SR|||IV|011809614446710010008|||0|0||0|0||0||||123580||||||||||||||||||

This is one line of my log. If you Maximise the zero element  Tue Oct 13 00:00:01 2015 the date & time is available. Like this I have files for each ten minutes.

SMSCDR_PREPAY_151013000000_10.84.0.29_AS.log (From 00:00:01 to 00:10:0
+0)
SMSCDR_PREPAY_151013100000_10.84.0.29_AS.log (From 00:10:01 to 00:20:0
+0)
SMSCDR_PREPAY_151013200000_10.84.0.29_AS.log
SMSCDR_PREPAY_151013300000_10.84.0.29_AS.log
SMSCDR_PREPAY_151013400000_10.84.0.29_AS.log
SMSCDR_PREPAY_151013500000_10.84.0.29_AS.log (From 00:50:01 to 01:00:0
+0)
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Like this we have POSTPAID_CDR & DELIVERY_CDR for every 10 minutes as like mentioned above

Now my requirement is

00:10:00= 0     0
00:10:01= 158   158
00:10:02= 163   321
00:10:03= 214   535
00:10:04= 123   658
00:10:05= 174   832
00:10:06= 271   1103
00:10:07= 96    1199
00:10:08= 263   1462
00:10:09= 72    1534
00:10:10= 190   1724
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The first element is time. The total after "=" is total entries noted in that particular second where 10th field (Submit) & 13 th field (GSM)in all prepay, postpaid, delivery CDR's. The last one is total entries upto that second from starting of the file.

And finally I need the highest entries noted in which second & that count

For that I written code like this

 
my @low_sec  = ("00","01","02","03","04","05","06","07","08","09");
my @high_sec = (10 .. 59);
my @seconds  = (@low_sec,@high_sec);

my $greatest = 0;
my $total    = 0;

foreach my $min ($minute .. $minute+9)
{
        foreach my $sec (@seconds)
        {
                my $SMPP_count = int ((split (/\s+/,`cut -d "|" -f 1,1
+0,13 SMSCDR*$date$hour$minute*.log |grep "Submit|GSM" |grep "$hour:$m
+in:$sec" |sort |uniq -c`)) [1]) + int ((split (/\s+/,`cut -d "|" -f 1
+,10,13 SMSCDR*$date$hour$minute*.log |grep "Submit|SMPP" |grep "$hour
+:$min:$sec" |sort |uniq -c`)) [1]);
                if ($SMPP_count > $greatest)
                {
                        $greatest = $SMPP_count;
                }
                $total = $total + $SMPP_count;
                print "$hour:$min:$sec","= $SMPP_count","\t",$total,$/
+;
        }
}

print $greatest,$/;
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Is there any easier method please guide me