[wix-users] MSI logging

Rob Mensching rob at firegiant.com
Mon May 28 09:06:55 PDT 2018

"!" means flush after every log write. It is extremely expensive.

 Short replies here. Complete answers over there: http://www.firegiant.com/

-----Original Message-----
From: wix-users <wix-users-bounces at lists.wixtoolset.org> On Behalf Of Fyodor Koryazhkin via wix-users
Sent: Monday, May 28, 2018 2:28 AM
To: WiX Toolset Users Mailing List <wix-users at lists.wixtoolset.org>
Cc: Fyodor Koryazhkin <fyodorkor at gmail.com>
Subject: [wix-users] MSI logging

I have noticed that specifying + (attach to existing file) option along with ! (flash each line immediately) option in log file increases installation time dramatically. (up to 10 times).

Is it bug in MSI engine or it works by design this way?

This is quite critical issue for us - we run several installations consecutive and want to keep all logging in one place. Also it is important to have hundred percent match in timing for trouble shouting because !
option writes down actions as they are performed.

Fyodor Koryazhkin..

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