Depending on the contents of the files you are compressing the gains from higher compression are variable. IE, if you are deploying a bunch of text content, then you will have a noticeable difference between no compression and high compression. If on the other hand you are deploying data files that are already compressed and/or encrypted, then increasing the compression level isn't going to gain you much.
You can observe the behavior outside of Windows Installer using a compression application which supports variable compression levels (you should use the same algorithm as Windows Installer to get comparable results). -----Original Message----- From: Phill Hogland [mailto:phogl...@rimage.com] Sent: Wednesday, October 29, 2014 9:58 AM To: wix-users@lists.sourceforge.net Subject: [WiX-users] Compression Level I have noticed recent discussion among the devs about Compression level and setting the level to -dcl:none for debug and -dcl:high (or some other setting) for Release builds. I also read through as many posts about compression as I could find in the archives and generally on Google. I have experimented with using -dcl and also with adding CompressionLevel to the MediaTemplate. <MediaTemplate EmbedCab="no" CabinetTemplate="eds{0}.cab" CompressionLevel="high" MaximumUncompressedMediaSize="100" /> I did not observe any change in the size of my msi or my external cab file (between a debug build and a release build, or any other setting). I am using wix 3.9.1001, on Windows 7 x64 (and also Win 8.1 x64). I use burn mba to install my chain of downloadable mis packages. Most of the packages are around 20mb. This works great (thanks!), but if there is a way to reduce the size of the downloads I thought it worth investigating. Any ideas on why I don't see any change in size when I set a higher compression level? Thanks for the assistance. Phill -- View this message in context: http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/Compression-Level-tp7597566.html Sent from the wix-users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
