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FSI Shadowcopy -- causes a significant degrade in the fsi first execute time

description

if you type
1+1;;
2+2;;
there is a perhaps 1 second delay between hitting return and seeing the answer when shadow copy is enabled this delay does not occur when shadow copy is not enabled.
subsequent statements to the first are not delayed significantly.

comments

latkin wrote Sep 16, 2014 at 9:17 PM

Per discussion on twitter and internally, this appears to be due to failure of NGENed images to be loaded in the shadow copy appdomain. We need to figure out how to configure the second domain to properly load NGENed images.

reinux wrote Apr 17 at 9:46 AM

I'm having this problem again on F# 4.1. Turning off Shadow Copy makes it start up much faster.

forki wrote Apr 17 at 12:05 PM

Codeplex is dead please open issue at https://github.com/Microsoft/visualfsharp