Benchmarks

Benchmarks have been implemented with BenchmarkDotNet.

Configuration

BenchmarkDotNet=v0.11.5
OS=Windows 10.0.18362
Processor=Intel Core i7-7700K CPU 4.20GHz (Kaby Lake), 1 CPU, 8 logical and 4 physical cores
  [Host]     : .NET Framework 4.7.2 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.8.3815.0
  DefaultJob : .NET Framework 4.7.2 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.8.3815.0

Implementation details

These benchmarks have been done by making multiple get of attribute.

The property cache is implemented with an array storing all attributes of a given property.

The Property_ByImmediateReflection_GetAttribute benchmark by getting attributes from a standard PropertyInfo with ImmediateReflection helpers.

Results

Method	Mean	Error	StdDev	Ratio	RatioSD
Property_GetAttribute	3,189.22 ns	78.6381 ns	102.2517 ns	1.00	0.00
PropertyCache_GetAttribute	76.40 ns	0.6781 ns	0.5294 ns	0.02	0.00
FastMember_GetAttribute	3,188.79 ns	62.4070 ns	66.7748 ns	0.99	0.03
ImmediateProperty_GetAttribute	75.92 ns	0.3393 ns	0.3174 ns	0.02	0.00
Property_ByImmediateReflection_GetAttribute	111.50 ns	1.2293 ns	1.1498 ns	0.03	0.00

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Results demonstrate that keeping the use of ImmediateReflection as much as possible provide the fastest access to Type, FieldInfo and PropertyInfo attributes.

It also shows that getting attributes from standard code is always possible but has a slightly higher cost.