• File size measurements show the distribution of size of files.
• Files are classified in four categories based on their size (lines of code): 1-100 (very small files), 101-200 (small files), 201-500 (medium size files), 501-1000 (long files), 1001+(very long files).
• It is a good practice to keep files small. Long files may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.

• There are 19,230 files with 3,740,384 lines of code.
• 713 very long files (1,484,511 lines of code)
• 996 long files (701,126 lines of code)
• 2,428 medium size files (759,141 lines of codeclsfd_ftr_w_mp_ins)
• 2,674 small files (381,040 lines of code)
• 12,419 very small files (414,566 lines of code)

There are 9705 files with lines longer than 120 characters. In total, there are 123488 long lines.

File	# lines	# units	# long lines
hwintrinsiclistxarch.h in src/coreclr/jit	1283	-	1189
man ClrEtwAll.man in src/coreclr/vm	8630	-	1131
Sve.PlatformNotSupported.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/Arm	1107	2	986
IcuLocaleData.cs in src/libraries/System.Private.CoreLib/src/System/Globalization	3804	9	867
System.Security.Cryptography.cs in src/libraries/System.Security.Cryptography/ref	3686	716	849
System.Data.Common.cs in src/libraries/System.Data.Common/ref	3828	462	836
instrsxarch.h in src/coreclr/jit	884	-	817
RegexCaseEquivalences.Data.cs in src/libraries/System.Text.RegularExpressions/src/System/Text/RegularExpressions	805	-	790
Avx512F.PlatformNotSupported.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/X86	786	3	749
Sve.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/Arm	1104	2	748
sal.h in src/coreclr/pal/inc/rt	1504	-	685
hwintrinsiclistarm64.h in src/coreclr/jit	712	-	677
instrsarm64sve.h in src/coreclr/jit	653	-	601
Avx512F.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/X86	787	3	591
asmparse.cpp in src/coreclr/ilasm/prebuilt	7601	-	587
System.Linq.Expressions.cs in src/libraries/System.Linq.Expressions/ref	1220	77	548
System.ComponentModel.TypeConverter.cs in src/libraries/System.ComponentModel.TypeConverter/ref	2428	343	538
arm64-codegen.h in src/mono/mono/arch/arm64	1922	-	517
Avx10v1.PlatformNotSupported.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/X86	545	4	510
System.Numerics.Tensors.netcore.cs in src/libraries/System.Numerics.Tensors/ref	661	141	439
Avx10v1.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/X86	546	4	420
Strings.de.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	408
System.Text.Json.cs in src/libraries/System.Text.Json/ref	1432	218	405
Strings.fr.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	404
Strings.it.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	403
Strings.pl.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	399
Strings.ru.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	398
Strings.es.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	397
Strings.pt-BR.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	395
System.Collections.Immutable.cs in src/libraries/System.Collections.Immutable/ref	1296	100	393
System.Security.Permissions.cs in src/libraries/System.Security.Permissions/ref	2508	400	392
Strings.tr.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	389
PackedSimd.PlatformNotSupported.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/Wasm	483	-	388
Avx2.PlatformNotSupported.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/X86	411	2	386
Strings.cs.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	381
netstandard.cs in src/libraries/shims/netstandard/src	2534	-	372
ApiCompatBaseline.NetCoreAppLatestStable.xml in src/libraries/apicompat	2061	-	334
TensorPrimitives.ITernaryOperator.cs in src/libraries/System.Numerics.Tensors/src/System/Numerics/Tensors/netcore/Common	3331	3	329
Strings.ja.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1315	-	328
clrconfigvalues.h in src/coreclr/inc	529	-	326
Strings.ko.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	317
System.DirectoryServices.cs in src/libraries/System.DirectoryServices/ref	1788	426	317
System.Numerics.Vectors.cs in src/libraries/System.Numerics.Vectors/ref	687	13	314
WMIGenerator.cs in src/libraries/System.Management/src/System/Management	5019	90	311
ApiCompatBaseline.netstandard2.0.xml in src/libraries/apicompat	3171	-	297
proj tests.proj in src/libraries	596	-	294
Avx2.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/X86	891	50	291
Sse2.PlatformNotSupported.cs in src/libraries/System.Private.CoreLib/src/System/Runtime/Intrinsics/X86	326	2	290
System.Xml.ReaderWriter.cs in src/libraries/System.Xml.ReaderWriter/ref	2936	469	277
Strings.zh-Hant.xlf in src/libraries/System.Runtime.InteropServices/gen/Common/Resources/xlf	1314	-	260