Hi All, Below is my hash.In it for example'2' means id , '25' describes interface index ,'i' and 'o' depicts respective in and out octets. I will be probing and getting the above hash for every 5 min and i want to update it in RRD Database and also i have to obey this condition" each id we have to use only one rrd file" (I Used RRD::Editor). By using hashes without sorting they will get updated irregularly in rrd database and i tried the below code and it is showing error 

HASH:

 %update = {
          '2'=>{
                '25' => {
                         'i' => 5000000,
                         'o' => 5000000
                        },

                '4' => {
                         'o' => 5000000,
                         'i' => 5000000
                        }
          
                }
        };






CODE:

foreach my $i (keys %update) 
{
   print Dumper($i);
   my $rrdfile="$pwd/$i.rrd";
   my $rrd = RRD::Editor->new();
   $string=();
   $updateRRD="N";
foreach my $j(keys %{$update{$i}})
{
foreach my $k(keys %{$update{$j}})
{
$updateRRD=$updateRRD.":".$update{$i}{$j}{$k};
}

}   
print Dumper ($updateRRD);
$rrd->update($updateRRD);
}


Error:

expected 9 data source readings (got 0) from N

[download]
Please help me?

In reply to sorting hash of hashes by dilip.renkila

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.