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VS 2022 Preview - Startup time for CoreClr compiler slower than desktop · Issue...
source link: https://github.com/dotnet/fsharp/issues/11907
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Yes ... there is a steep performance degrade between desktop and coreclr:
The following shows --times for exactly the same inputs between desktop and coreclr for dotnet 6 and 5.05
C:\Users\codec\source\repos\ConsoleApp11\ConsoleApp11>"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\FSharp\Tools\fsc.exe" --times @ConsoleApp11.rsp
Microsoft (R) F# Compiler version 11.4.2.0 for F# 5.0
Copyright (c) Microsoft Corporation. All Rights Reserved.
warning FS0075: The command-line option 'times' is for test purposes only
TIME: 0.2 Delta: 0.1 Mem: 80 G0: 0 G1: 0 G2: 0 [Import mscorlib and FSharp.Core.dll]
TIME: 0.3 Delta: 0.1 Mem: 86 G0: 0 G1: 0 G2: 0 [Parse inputs]
TIME: 0.3 Delta: 0.0 Mem: 86 G0: 0 G1: 0 G2: 0 [Import non-system references]
TIME: 0.3 Delta: 0.1 Mem: 106 G0: 0 G1: 0 G2: 0 [Typecheck]
TIME: 0.3 Delta: 0.0 Mem: 106 G0: 0 G1: 0 G2: 0 [Typechecked]
TIME: 0.3 Delta: 0.0 Mem: 106 G0: 0 G1: 0 G2: 0 [Write Interface File]
TIME: 0.3 Delta: 0.0 Mem: 107 G0: 0 G1: 0 G2: 0 [Write XML document signatures]
TIME: 0.3 Delta: 0.0 Mem: 107 G0: 0 G1: 0 G2: 0 [Write XML docs]
TIME: 0.4 Delta: 0.0 Mem: 116 G0: 0 G1: 0 G2: 0 [Encode Interface Data]
TIME: 0.4 Delta: 0.0 Mem: 116 G0: 0 G1: 0 G2: 0 [Optimizations]
TIME: 0.4 Delta: 0.0 Mem: 116 G0: 0 G1: 0 G2: 0 [Ending Optimizations]
TIME: 0.4 Delta: 0.0 Mem: 117 G0: 0 G1: 0 G2: 0 [Encoding OptData]
TIME: 0.4 Delta: 0.0 Mem: 120 G0: 0 G1: 0 G2: 0 [TAST -> IL]
ilwrite: TIME 0.000 (total) 0.391 (delta) - Write Started
ilwrite: TIME 0.000 (total) 0.000 (delta) - Module Generation Preparation
ilwrite: TIME 0.000 (total) 0.000 (delta) - Module Generation Pass 1
ilwrite: TIME 0.000 (total) 0.000 (delta) - Module Generation Pass 2
ilwrite: TIME 0.000 (total) 0.000 (delta) - Module Generation Pass 3
ilwrite: TIME 0.000 (total) 0.000 (delta) - Module Generation Pass 4
ilwrite: TIME 0.000 (total) 0.000 (delta) - Finalize Module Generation Results
ilwrite: TIME 0.000 (total) 0.000 (delta) - Generated Tables and Code
ilwrite: TIME 0.000 (total) 0.000 (delta) - Layout Header of Tables
ilwrite: TIME 0.000 (total) 0.000 (delta) - Build String/Blob Address Tables
ilwrite: TIME 0.000 (total) 0.000 (delta) - Sort Tables
ilwrite: TIME 0.000 (total) 0.000 (delta) - Write Header of tablebuf
ilwrite: TIME 0.000 (total) 0.000 (delta) - Write Tables to tablebuf
ilwrite: TIME 0.000 (total) 0.000 (delta) - Layout Metadata
ilwrite: TIME 0.000 (total) 0.000 (delta) - Write Metadata Header
ilwrite: TIME 0.000 (total) 0.000 (delta) - Write Metadata Tables
ilwrite: TIME 0.000 (total) 0.000 (delta) - Write Metadata Strings
ilwrite: TIME 0.000 (total) 0.000 (delta) - Write Metadata User Strings
ilwrite: TIME 0.000 (total) 0.000 (delta) - Write Blob Stream
ilwrite: TIME 0.000 (total) 0.000 (delta) - Fixup Metadata
ilwrite: TIME 0.000 (total) 0.000 (delta) - Generated IL and metadata
ilwrite: TIME 0.000 (total) 0.000 (delta) - PDB: Defined 1 documents
ilwrite: TIME 0.000 (total) 0.000 (delta) - PDB: Sorted 1 methods
ilwrite: TIME 0.000 (total) 0.000 (delta) - PDB: Created
ilwrite: TIME 0.000 (total) 0.000 (delta) - Layout image
ilwrite: TIME 0.016 (total) 0.016 (delta) - Writing Image
ilwrite: TIME 0.016 (total) 0.000 (delta) - PDB: Closed
ilwrite: TIME 0.016 (total) 0.000 (delta) - Generate PDB Info
ilwrite: TIME 0.016 (total) 0.000 (delta) - Finalize PDB
ilwrite: TIME 0.016 (total) 0.000 (delta) - Signing Image
TIME: 0.4 Delta: 0.0 Mem: 123 G0: 0 G1: 0 G2: 0 [Write .NET Binary]
STATS: #ByteArrayFile = 151, #MemoryMappedFileOpen = 1, #MemoryMappedFileClosed = 0, #RawMemoryFile = 1, #WeakByteArrayFile = 0
C:\Users\codec\source\repos\ConsoleApp11\ConsoleApp11>dotnet.exe "C:\Program Files\dotnet\sdk\6.0.100-preview.6.21355.2\FSharp\fsc.dll" --times @ConsoleApp11.rsp
Microsoft (R) F# Compiler version 12.0.0.0 for F# 5.0
Copyright (c) Microsoft Corporation. All Rights Reserved.
warning FS0075: The command-line option 'times' is for test purposes only
TIME: 0.4 Delta: 0.2 Mem: 112 G0: 8 G1: 4 G2: 2 [Import mscorlib and FSharp.Core.dll]
TIME: 0.5 Delta: 0.1 Mem: 118 G0: 0 G1: 0 G2: 0 [Parse inputs]
TIME: 0.5 Delta: 0.0 Mem: 118 G0: 0 G1: 0 G2: 0 [Import non-system references]
TIME: 0.9 Delta: 0.4 Mem: 136 G0: 3 G1: 1 G2: 1 [Typecheck]
TIME: 0.9 Delta: 0.0 Mem: 136 G0: 0 G1: 0 G2: 0 [Typechecked]
TIME: 0.9 Delta: 0.0 Mem: 136 G0: 0 G1: 0 G2: 0 [Write Interface File]
TIME: 0.9 Delta: 0.0 Mem: 136 G0: 0 G1: 0 G2: 0 [Write XML document signatures]
TIME: 0.9 Delta: 0.0 Mem: 136 G0: 0 G1: 0 G2: 0 [Write XML docs]
TIME: 1.0 Delta: 0.1 Mem: 136 G0: 1 G1: 0 G2: 0 [Encode Interface Data]
TIME: 1.0 Delta: 0.0 Mem: 137 G0: 0 G1: 0 G2: 0 [Optimizations]
TIME: 1.0 Delta: 0.0 Mem: 137 G0: 0 G1: 0 G2: 0 [Ending Optimizations]
TIME: 1.0 Delta: 0.0 Mem: 137 G0: 0 G1: 0 G2: 0 [Encoding OptData]
TIME: 1.1 Delta: 0.1 Mem: 140 G0: 1 G1: 0 G2: 0 [TAST -> IL]
ilwrite: TIME 0.000 (total) 1.094 (delta) - Write Started
ilwrite: TIME 0.016 (total) 0.016 (delta) - Module Generation Preparation
ilwrite: TIME 0.016 (total) 0.000 (delta) - Module Generation Pass 1
ilwrite: TIME 0.016 (total) 0.000 (delta) - Module Generation Pass 2
ilwrite: TIME 0.047 (total) 0.031 (delta) - Module Generation Pass 3
ilwrite: TIME 0.047 (total) 0.000 (delta) - Module Generation Pass 4
ilwrite: TIME 0.047 (total) 0.000 (delta) - Finalize Module Generation Results
ilwrite: TIME 0.047 (total) 0.000 (delta) - Generated Tables and Code
ilwrite: TIME 0.047 (total) 0.000 (delta) - Layout Header of Tables
ilwrite: TIME 0.047 (total) 0.000 (delta) - Build String/Blob Address Tables
ilwrite: TIME 0.047 (total) 0.000 (delta) - Sort Tables
ilwrite: TIME 0.047 (total) 0.000 (delta) - Write Header of tablebuf
ilwrite: TIME 0.047 (total) 0.000 (delta) - Write Tables to tablebuf
ilwrite: TIME 0.047 (total) 0.000 (delta) - Layout Metadata
ilwrite: TIME 0.047 (total) 0.000 (delta) - Write Metadata Header
ilwrite: TIME 0.047 (total) 0.000 (delta) - Write Metadata Tables
ilwrite: TIME 0.047 (total) 0.000 (delta) - Write Metadata Strings
ilwrite: TIME 0.047 (total) 0.000 (delta) - Write Metadata User Strings
ilwrite: TIME 0.047 (total) 0.000 (delta) - Write Blob Stream
ilwrite: TIME 0.047 (total) 0.000 (delta) - Fixup Metadata
ilwrite: TIME 0.047 (total) 0.000 (delta) - Generated IL and metadata
ilwrite: TIME 0.047 (total) 0.000 (delta) - PDB: Defined 1 documents
ilwrite: TIME 0.047 (total) 0.000 (delta) - PDB: Sorted 1 methods
ilwrite: TIME 0.062 (total) 0.016 (delta) - PDB: Created
ilwrite: TIME 0.078 (total) 0.016 (delta) - Layout image
ilwrite: TIME 0.078 (total) 0.000 (delta) - Writing Image
ilwrite: TIME 0.078 (total) 0.000 (delta) - PDB: Closed
ilwrite: TIME 0.078 (total) 0.000 (delta) - Generate PDB Info
ilwrite: TIME 0.078 (total) 0.000 (delta) - Finalize PDB
ilwrite: TIME 0.078 (total) 0.000 (delta) - Signing Image
TIME: 1.2 Delta: 0.1 Mem: 143 G0: 0 G1: 0 G2: 0 [Write .NET Binary]
C:\Users\codec\source\repos\ConsoleApp11\ConsoleApp11>dotnet.exe "C:\Program Files\dotnet\sdk\5.0.302\FSharp\fsc.dll" --times @ConsoleApp11.rsp
Microsoft (R) F# Compiler version 11.4.2.0 for F# 5.0
Copyright (c) Microsoft Corporation. All Rights Reserved.
warning FS0075: The command-line option 'times' is for test purposes only
TIME: 0.4 Delta: 0.3 Mem: 110 G0: 9 G1: 4 G2: 2 [Import mscorlib and FSharp.Core.dll]
TIME: 0.5 Delta: 0.1 Mem: 115 G0: 0 G1: 0 G2: 0 [Parse inputs]
TIME: 0.5 Delta: 0.0 Mem: 115 G0: 0 G1: 0 G2: 0 [Import non-system references]
TIME: 0.9 Delta: 0.4 Mem: 139 G0: 2 G1: 1 G2: 0 [Typecheck]
TIME: 0.9 Delta: 0.0 Mem: 139 G0: 0 G1: 0 G2: 0 [Typechecked]
TIME: 0.9 Delta: 0.0 Mem: 139 G0: 0 G1: 0 G2: 0 [Write Interface File]
TIME: 0.9 Delta: 0.0 Mem: 139 G0: 0 G1: 0 G2: 0 [Write XML document signatures]
TIME: 0.9 Delta: 0.0 Mem: 139 G0: 0 G1: 0 G2: 0 [Write XML docs]
TIME: 1.0 Delta: 0.1 Mem: 138 G0: 2 G1: 1 G2: 1 [Encode Interface Data]
TIME: 1.0 Delta: 0.0 Mem: 139 G0: 0 G1: 0 G2: 0 [Optimizations]
TIME: 1.0 Delta: 0.0 Mem: 139 G0: 0 G1: 0 G2: 0 [Ending Optimizations]
TIME: 1.0 Delta: 0.0 Mem: 139 G0: 0 G1: 0 G2: 0 [Encoding OptData]
TIME: 1.1 Delta: 0.1 Mem: 140 G0: 0 G1: 0 G2: 0 [TAST -> IL]
ilwrite: TIME 0.000 (total) 1.109 (delta) - Write Started
ilwrite: TIME 0.016 (total) 0.016 (delta) - Module Generation Preparation
ilwrite: TIME 0.016 (total) 0.000 (delta) - Module Generation Pass 1
ilwrite: TIME 0.016 (total) 0.000 (delta) - Module Generation Pass 2
ilwrite: TIME 0.031 (total) 0.016 (delta) - Module Generation Pass 3
ilwrite: TIME 0.031 (total) 0.000 (delta) - Module Generation Pass 4
ilwrite: TIME 0.031 (total) 0.000 (delta) - Finalize Module Generation Results
ilwrite: TIME 0.031 (total) 0.000 (delta) - Generated Tables and Code
ilwrite: TIME 0.031 (total) 0.000 (delta) - Layout Header of Tables
ilwrite: TIME 0.031 (total) 0.000 (delta) - Build String/Blob Address Tables
ilwrite: TIME 0.031 (total) 0.000 (delta) - Sort Tables
ilwrite: TIME 0.031 (total) 0.000 (delta) - Write Header of tablebuf
ilwrite: TIME 0.031 (total) 0.000 (delta) - Write Tables to tablebuf
ilwrite: TIME 0.031 (total) 0.000 (delta) - Layout Metadata
ilwrite: TIME 0.031 (total) 0.000 (delta) - Write Metadata Header
ilwrite: TIME 0.031 (total) 0.000 (delta) - Write Metadata Tables
ilwrite: TIME 0.031 (total) 0.000 (delta) - Write Metadata Strings
ilwrite: TIME 0.031 (total) 0.000 (delta) - Write Metadata User Strings
ilwrite: TIME 0.031 (total) 0.000 (delta) - Write Blob Stream
ilwrite: TIME 0.031 (total) 0.000 (delta) - Fixup Metadata
ilwrite: TIME 0.031 (total) 0.000 (delta) - Generated IL and metadata
ilwrite: TIME 0.031 (total) 0.000 (delta) - PDB: Defined 1 documents
ilwrite: TIME 0.031 (total) 0.000 (delta) - PDB: Sorted 1 methods
ilwrite: TIME 0.062 (total) 0.031 (delta) - PDB: Created
ilwrite: TIME 0.078 (total) 0.016 (delta) - Layout image
ilwrite: TIME 0.078 (total) 0.000 (delta) - Writing Image
ilwrite: TIME 0.078 (total) 0.000 (delta) - PDB: Closed
ilwrite: TIME 0.078 (total) 0.000 (delta) - Generate PDB Info
ilwrite: TIME 0.078 (total) 0.000 (delta) - Finalize PDB
ilwrite: TIME 0.078 (total) 0.000 (delta) - Signing Image
TIME: 1.2 Delta: 0.1 Mem: 143 G0: 0 G1: 0 G2: 0 [Write .NET Binary]
C:\Users\codec\source\repos\ConsoleApp11\ConsoleApp11>
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