What should be the typical runtime for ILMerge?

Question

I am running ILMerge with these binaries

Directory: H:\Visual Studio 2012\projects\Util\FreeBytes\bin\Debug Mode LastWriteTime Length Name ---- ------------- ------ ---- -a---- 2/16/2017 6:16 PM 9216 FreeBytes.exe -a---- 10/13/2015 12:49 PM 1514824 FSharp.Core.dll -a---- 2/16/2017 6:15 PM 6656 VolLib.dll 

using this command

PS H:\Visual Studio 2012\projects\Util\FreeBytes\bin\Debug> ilmerge /log:ilmerge.log /lib:C:\Windows\Microsoft.NET\Framework\v4.0.30319 /target:winexe /out:FreeBytesC.exe /ndebug FreeBytes.exe FSharp.Core.dll V olLib.dll

How long does it take to write an executable file? The log file says that everything is in order until the output file is written.

 Resolved assembly reference 'System.Numerics' to 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\System.Numerics.dll'. (Used a client-suppli Using assembly 'FreeBytes' for assembly-level attributes for the target assembly. Merging assembly 'FreeBytes' into target assembly. Merging assembly 'FSharp.Core' into target assembly. Assembly level attribute 'System.Security.SecurityTransparentAttribute' from assembly 'FSharp.Core' being deleted from target assembly Merging assembly 'VolLib' into target assembly. Copying 1 Win32 Resources from assembly 'FreeBytes' into target assembly. Transferring entry point 'DiskChecker1.main(System.String[])' from assembly 'FreeBytes' to assembly 'FreeBytesC'. There were no errors reported in the target assembly metadata. ILMerge: Writing target assembly 'FreeBytesC.exe'.