Hi, the OP here

Thank you for your input.

I went and tested for my specific performance problem: generation of HTML tables. It was a fairly dumb, CGI-ish test, and there were not-benchmarky things such as using SSL for the database connection, and the database being on another server etc. Database connection was a basic DBI + DBD::Pg.

The test was, in short: Query the database for the rows and format a HTML page of them, printing it to /dev/null. The table was about 300 rows, and had eight columns. There were a lot of function calls thanks to HTML escaping.

The contestants were Perl 5.14.2 i686-linux-thread-multi-64int and i686-linux-64int, run on an old x86 computer.

nothreads 33.8/s
threads   28.7/s

[download]

I'm certain that I would get different results if I added a web framework, templating language, or even a HTTP server into the mix, or ran the database on the same computer, or whatever. But I guess I can say that non-threaded Perl is about 17% faster for this limited test.

In reply to Re: How much slower is perl (the binary) with threads than without? by Anonymous Monk
in thread How much slower is perl (the binary) with threads than without? 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.