I would usually use a hash for such a task. Have a look at the following pseudo code: 

my %report;
for my $line (<LOGFILE>) {
    ...
    # extract error type and time from $line here
    ...
    $report{$errortype}{...time rounded to the previous 10 mins...}++;
}
# print table here

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In reply to Re: How to create a non uniform multi-dimention array with push? by hdb
in thread How to create a non uniform multi-dimention array with push? by shaialo

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