I have ran into a few projects using C where mmapped files over network mounts on windows were dropped in favor of a full read of the file in order to get the low level windows networking code to burst the file. In this case though your point may be true, I guess if the match happens randomly in the file there would be no need to have the whole file transfered across the network. I my cases I need access to the whole file every time. A good example between memmapped file access and a full open/read triggering the burst mode is simple though, copy with explorer almost always triggers the burst mode -- try installing ms office across a network drive ( the installer mmaps the cabs) time it, then time copying the files across and installing. Or a perl only test is a slurp and dump local vs line by line dump to local on a large text file. dws++ for bringing up a point I completly missed though.

Edited:
Also as far as I know the bursting mode does not work on samba servers as far as I know.

-Waswas

In reply to Re: Re: Re: Re: Where's the leak? by waswas-fng
in thread Where's the leak? by tekkie

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.