2. The files are installed in the order specified by the Sequence column. The WiX toolset manages the Sequence column for you because the order should not matter. The control you get is that you can control the order of groups of files because the Media element specify the order of each group.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Igor Maslov Sent: Friday, May 25, 2007 11:46 AM To: wix-users@lists.sourceforge.net Subject: Re: [WiX-users] How to improve speed of installation? > 2. The cabinet is only opened once. That's why the files have to be sequenced perfectly because the > Windows Installer will only read through the File table sequentially and > any files out of order will get > skipped. Cabinet files are optimized for front to back reading not > random access. So does WiX sequence the files inside cabinets according to the Sequence column of the File table? Do I need to do anything special about that when I'm building install with WiX? I'm trying to layout cabinets and uncompressed files in the order they are called, but do I need to take special care of files inside cabinets, or WiX does it automatically? > 1. Anti-virus software can cripple both the install time *and* the build > time. > For build machines, you can usually tell the software to ignore the build > directories and the temp > directory. For end user machines... Yes, I have anti virus, and can't switch it off - it policy. But when I look at CPU usage, it seems that anti-virus is only active for part of the link process. Rob Mensching-2 wrote: > > 1. Anti-virus software can cripple both the install time *and* the build > time. For build machines, you can usually tell the software to ignore the > build directories and the temp directory. For end user machines... > <sigh/> > > 2. The cabinet is only opened once. That's why the files have to be > sequenced perfectly because the Windows Installer will only read through > the File table sequentially and any files out of order will get skipped. > Cabinet files are optimized for front to back reading not random access. > > 3. There is a cost of extracting embedded cabinets out of the MSI. > > 4. There is some sweet spot for the size of cabinet files. I remember > hearing the Visual Studio guys playing with their cabinet composition > trying to find the ideal size of the cabinets for decompression. I don't > remember the results, but it seemed like the ideal size of a cabinet was > no larger than 200 MB with no more than a certain number of files... > sorry, I don't remember more details. > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: Friday, May 25, 2007 5:12 AM > To: wix-users@lists.sourceforge.net > Subject: Re: [WiX-users] How to improve speed of installation? > > It may be a stupid question, but do you have any anti-virus software > running? If so, that can completely cripple performance of an > installation, and since you indicate that it is the "File copying" phase > I would be interested to see what the difference is versus installing on > a non-protected system. > > Rob M, can you (or anyone else with Microsoft Installer knowledge, or a > communication channel to the developers) confirm if the cab files > embedded in the installation are extracted from the MSI then opened > once, or if the cab file is "reopened" for each file that is extracted > from it. If it is the latter, it seems to me that multiple smaller cab > files could provide significantly better performance than one large one > if "on access" anti-virus scanning is enabled. > > Regards, > Richard > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Igor > Maslov > Sent: Thursday, May 24, 2007 4:47 PM > To: wix-users@lists.sourceforge.net > Subject: Re: [WiX-users] How to improve speed of installation? > > > > My "slow speed" comes from the "File copying" phase. > > I.e. all steps are running quite fast, but when I see "Copying Files" on > a > progress dialog > it's where it takes most of the time. > > > > * C O N F I D E N T I A L I T Y N O T I C E * > ----------------------------------------------------------- > The content of this e-mail is intended solely for the use of the > individual or entity to whom it is addressed. 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