Wow that was an easy fix! Thank you for spending the time to find it choroba. For anyone who does not know, these files are used to generate lovely images of subroutine calls. Installing graphviz gives you a bunch of binaries to generate different kinds of graphs like: 
neato -Tpng /path/to/nytprof/PerlModule-pm.dot -o some.png

[download]
Layout engines include: dot, neato, fdp, sfdp, circo, twopi, osage, patchwork

> Have you ever seen them in older versions of Devel::NYTProf?

I do not recall ever seeing them, but only recently began to check :-)

The NYTProf graphs are intense but callGraph is more pretty and easier to grok: github.com/koknat/callGraph

In reply to Re^2: NYTProf missing dot files by Anonymous Monk
in thread NYTProf missing dot files by Anonymous Monk

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.