One can successfully force install Inline::C, but it's unusable

While that's so for the latest version of Inline::C, it's quite simple to install older versions of Inline::C on the unthreaded Windows (as they don't carry the Win32::IPC baggage that comes with recent versions).
So, I installed Inline-0.55, though I perhaps didn't need to go that far back.
Here are the results using vr's original one-liners:

On threaded perl-5.26.0 with current Inline::C version 0.78:

>perl -MTime::HiRes=time -MInline=C,"void foo(){}" -wE"$t=time;foo()fo
+r 1..1e8;say time-$t"
11.0136189460754

>perl -MTime::HiRes=time -wE"$t=time;sub foo(){}foo()for 1..1e8;say ti
+me-$t"
5.39761018753052
[download]

On threaded perl-5.26.0 with Inline::C version 0.55:

>perl -MTime::HiRes=time -MInline=C,"void foo(){}" -wE"$t=time;foo()fo
+r 1..1e8;say time-$t"
10.4052181243896

>perl -MTime::HiRes=time -wE"$t=time;sub foo(){}foo()for 1..1e8;say ti
+me-$t"
5.58481001853943
[download]

On unthreaded perl-5.26.0 with Inline::C version 0.55:

>perl -MTime::HiRes=time -MInline=C,"void foo(){}" -wE"$t=time;foo()fo
+r 1..1e8;say time-$t"
4.92960906028748

>perl -MTime::HiRes=time -wE"$t=time;sub foo(){}foo()for 1..1e8;say ti
+me-$t"
7.65961289405823
[download]

It therefore appears that reverting to an older version of Inline::C makes very little difference, whereas using Inline::C on an unthreaded Windows perl-5.26.0 markedly improves performance when calling Inline::C subs from perl.
Unfortunately, it also seems that calling perl subs on an unthreaded Windows perl-5.26.0 takes about 30% longer (as compared to the time it takes on the threaded perl).

Of course, things might be quite different on the soon-to-be-released perl-5.28.0.
And things might also be quite different on 32-bit builds of perl.

Cheers,
Rob

---

---

• Are you posting in the right place? Check out Where do I post X? to know for sure.
• Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:

  <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>

• Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
• Want more info? How to link or How to display code and escape characters are good places to start.