<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
If the 1 minute versus 1 second is accurate, then there was a 60x<br>
performance difference in the beginning and Matthew managed to improve<br>
it by a factor of 5 or even slightly over 6 when tuning, so it seems<br>
to me Racket would still be slower by 10x.<br>
<br>
</blockquote><div><br></div><br><span class="Apple-style-span" style><br></span><div dir="ltr">I checked with the blog author a few days ago, and he reports that one of his test programs runs significantly slower under the development version of Racket vs. 5.2.1, after these changes:<span></span></div>
<div><br></div><span class="Apple-style-span" style><div class="comment-author vcard"><img alt="" src="http://1.gravatar.com/avatar/aa326442e1afcccad56609d49b3c5a63?s=54&d=identicon&r=G" class="avatar avatar-32 grav-hashed grav-hijack" height="32" width="32" id="grav-aa326442e1afcccad56609d49b3c5a63-3" style="float: right; padding-top: 2px; padding-right: 2px; padding-bottom: 2px; padding-left: 2px; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-top-color: rgb(221, 221, 221); border-right-color: rgb(221, 221, 221); border-bottom-color: rgb(221, 221, 221); border-left-color: rgb(221, 221, 221); "><cite class="fn" style="text-decoration:none;font-weight:bold;font-style:normal;font-size:1.1em"><a href="http://cxwangyi.wordpress.com/" rel="external nofollow" class="url" style="color:rgb(0,102,204);text-decoration:none;font-weight:bold;font-style:normal;font-size:1.1em">cxwangyi</a></cite> <span class="says">says:</span></div>
<div class="comment-meta commentmetadata" style="font-weight:normal;font-size:1em;margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;display:block"><a href="http://cxwangyi.wordpress.com/2012/07/29/chinese-whispers-in-racket-and-go/#comment-478" style="color:rgb(0,102,204);text-decoration:none">August 15, 2012 at 7:53 am</a></div>
<p style="font-weight:normal;line-height:1.5em;text-transform:none;margin-top:10px;margin-right:5px;margin-bottom:10px;margin-left:0px">Thanks for the update, and I am now looking forward to v5.3.0.18.</p><p style="font-weight:normal;line-height:1.5em;text-transform:none;margin-top:10px;margin-right:5px;margin-bottom:10px;margin-left:0px">
One more thing: I just compared v5.2.1 with v5.3.0.17, and found the latter runs times slower.</p><p style="font-weight:normal;line-height:1.5em;text-transform:none;margin-top:10px;margin-right:5px;margin-bottom:10px;margin-left:0px">
$time racket-5.2.1/bin/racket /tmp/a.rkt<br>real 0m35.430s<br>user 0m26.235s<br>sys 0m5.334s</p><p style="font-weight:normal;line-height:1.5em;text-transform:none;margin-top:10px;margin-right:5px;margin-bottom:10px;margin-left:0px">
$time ~/racket-5.3.0.17/bin/racket /tmp/a.rkt<br>real 1m54.070s<br>user 0m47.368s<br>sys 0m27.836s</p></span><div dir="ltr">Reference: the comments section of <a href="http://cxwangyi.wordpress.com/2012/07/29/chinese-whispers-in-racket-and-go/">http://cxwangyi.wordpress.com/2012/07/29/chinese-whispers-in-racket-and-go/</a></div>
<div><br></div><div>Maybe someone can follow up with the author directly?</div>