Mattias Karlsson devlead

On the cost of being lazy

Changelog

2017-01-04
New performance test - Paul Westcott (@manofstick) provided his implementation of Lazy semantics (called Lazzzy) which I included in the graphs. This implementation is intended to be equivalent to Lazy<'T> in .NET with regards to functionality.
2017-01-17
New performance test - is working on a PR for .NET Core. I wanted to include performance numbers for the updated Lazy<'T> class.

On the topic of 2D array performance in .NET

It popped up a discussion in FSSF Slack over 2D arrays and performance. I thought it could be good to share some performance numbers for different alternatives in .NET.

For this I am computing the matrix product:

let naiveMultiply () =

	1) Install the PL2303 Lion driver from http://changux.co/osx-installer-to-pl2303-serial-usb-on-osx-lio

	2) Install the CrossOver trial http://www.codeweavers.com/products/cxmac/

	3) Install the 'LED Mini Board' software as a CrossOver app http://www.prolific.com.tw/eng/downloads.asp?id=31

	4) Plug in your device, then symlink the mounted device in /dev to the `dosdevices` folder in your CrossOver app
	cd ~/Library/Application\ Support/CrossOver/Bottles/Setup.exe/dosdevices # Where Setup.exe is the CrossOver app that was created
	ln -s /dev/cu.PL2303-00001004 com1 # Your /dev/ mount name may be slightly different

	<!--
	MSBuild snippet which you can paste into your .csproj/.vbproj for a VSIX or Visual Studio Package project
	to have the libgit2sharp NativeBinaries .dlls included in the final .vsix.

	Modified version of http://chrisparnin.github.io/articles/2013/09/deploying-native-binaries-with-visual-studio-extensions/
	-->
	<PropertyGroup>
	<EnableIncludeLibGit2SharpInVsix Condition=" '$(EnableIncludeLibGit2SharpInVsix)'=='' ">true</EnableIncludeLibGit2SharpInVsix>
	</PropertyGroup>
	<ItemGroup Condition=" '$(EnableIncludeLibGit2SharpInVsix)'=='true' ">