Blessed arrayrefs will save a bit of memory. If the data being stored is simple enough that it can be serialized into strings, blessed references to strings are are also possible. They are likely to be the most memory-efficient representation of objects, but they can be a pain if your objects aren't very simple. Inside-out objects are also pretty memory-efficient if you have lots of objects but only a few fields, because it's one hash per field instead of one hash per object.

Do check whether it's really the objects causing the issue though — it might be something like a memory leak caused by more references to the objects than expected. (Cyclical references; objects getting closed over by coderefs; global variables holding references to the objects.)

Hire me at Toby Ink Ltd or Join my OnlyFans

In reply to Re: Memory overhead of blessed hashes by tobyink
in thread Memory overhead of blessed hashes by LanX

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.