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<body><div>No virtualisation, it is a dual boot maschine.</div><div>1 CPU would be good :-) In my case it is a very small fraction of it.</div><div>Nicu</div><div><br /></div>
<div>------ Originalnachricht ------</div>
<div>Von: "A.M." <<a href="mailto:agentm@themactionfaction.com">agentm@themactionfaction.com</a>></div>
<div>An: <a href="mailto:haskell-cafe@haskell.org">haskell-cafe@haskell.org</a></div>
<div>Gesendet: 17.09.2016 03:20:38</div>
<div>Betreff: Re: [Haskell-cafe] Very _very_ slow compiles on Windows 10</div><div><br /></div>
<div id="x57b301861fd544d" class="plain"><blockquote cite="aa8277c1-fadf-4c98-bc00-aa9726640e82@themactionfaction.com" type="cite" class="cite2">
<tt style="word-wrap:break-word"><div>On 09/16/2016 06:10 PM, Nicu Ionita wrote:</div>
<blockquote type="cite" class="cite">
<div> Is anybody else experiencing really slow compilations with GHC 7.10.2 on</div>
<div> Windows 10?</div>
<div> </div>
<div> I use stack to compile the project and run it under a mingw64</div>
<div> environment provided by Github bash. The CPU usage is very low all the</div>
<div> time (meaning: GHC does barely use the CPU). On same computer with</div>
<div> Ubuntu 16.04 it just compiles normally, but under Windows it is for sure</div>
<div> 10x slower, maybe even more.</div>
</blockquote>
<div> </div>
<div>Are you using virtualization? I see the same thing under virtualbox on</div>
<div>Ubuntu. Specifically, even after allocating 12 real CPUs to the VM, I</div>
<div>never see stack-invoked ghc use more than one CPU. On rare occasions,</div>
<div>the linker phase hangs. I have confirmed that ghc reports 12 capabilities.</div>
<div> </div>
<div>I'm just glad that Windows is not my primary development platform; it's</div>
<div>entirely possible that virtualization is the cause. VirtualBox is not</div>
<div>known for being a speed demon, but the compilation speed is indeed</div>
<div>embarrassing.</div>
<div> </div>
<div>Cheers,</div>
<div>M</div>
<div> </div>
<div> </div>
</tt></blockquote></div>
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