<div dir="ltr">Let's see the timing with the two done in reverse order. OS cache could account for some of that difference.<div><br></div><div>Blake McBride</div><div><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">
On Tue, Apr 22, 2014 at 5:05 PM, Eliot Miranda <span dir="ltr"><<a href="mailto:eliot.miranda@gmail.com" target="_blank">eliot.miranda@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br><div dir="ltr">Hi All,<div><br></div><div> I should write a blog post on this, but I can't wait...</div><div><br></div><div>In recent days I've written a script to build a Cog VMMaker image from Squeak 4.5. See <a href="http://www.squeakvm.org/svn/squeak/branches/Cog/image" target="_blank">http://www.squeakvm.org/svn/squeak/branches/Cog/image</a>. This has allowed me to run the current Cog VM against Spur side-to-side.</div>
<div><br></div><div>To build a Cog VMMaker image on my 2.2GHz Intel Core i7 MacBook Pro using the current Cog VM takes about 2 and a half minutes:</div><div><br></div><div><div>McStalker.image$ time oscfvm CogVMMaker.image BuildSqueak45Image.st </div>
<div>real 2m30.671s</div><div>user 2m15.683s</div><div>sys 0m5.283s</div><div><br></div><div>To build the equivalent image using Spur takes about 1 and a half minutes:</div><div><div>McStalker.image$ time spurcfvm CogVMMaker-spur.image BuildSqueak45Image.st </div>
<div>real 1m34.943s</div><div>user 1m23.666s</div><div>sys 0m6.810s</div></div><div><br></div><div>Comparing:</div><div><br></div><div><div>94.943 - 150.671 / 150.671 * 100 -36.99</div><div>83.666 - 135.681 / 135.681 * 100 -38.34</div>
<div>150.671 / 94.943 1.59</div><div>135.681 / 83.666 1.62</div></div><div><br></div><div>that's about a -37% speedup, or 1.6x faster.</div>-- <br>best,<div>Eliot</div>
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