Add benchmarks

Author: fabien.menager

docs/images/bench-mysql.png

@@ -29,6 +29,8 @@ features:
 
 ## It's fast !
 
+It's also memory efficient, with low allocations and garbage collection pressure, see benchmark results below.
+
 The benchmark consists of inserting 500 000 records into a single table with various column types, using various methods to compare performance.
 The results are shown for PostgreSQL, SQL Server, SQLite, MySQL and Oracle databases.
 
@@ -55,3 +57,51 @@ The benchmark code is available on [GitHub](https://github.com/PhenX/PhenX.Entit
 | Linq2Db                                  |  1.427 s |  1.05 | 11000.0000 | 1000.0000 |    - |  91.68 MB |        1.00 |
 | Z_EntityFramework_Extensions_EFCore      |  3.750 s |  2.76 | 53000.0000 | 1000.0000 |    - | 439.14 MB |        4.79 |
 | EFCore_BulkExtensions                    | 13.432 s |  9.88 | 29000.0000 | 2000.0000 |    - | 232.77 MB |        2.54 |
+
+### MySQL
+
+![MySQL benchmark results](images/bench-mysql.png)
+
+| Method                               |     Mean | Ratio |        Gen0 |       Gen1 |      Gen2 |  Allocated | Alloc Ratio |
+|--------------------------------------|---------:|------:|------------:|-----------:|----------:|-----------:|------------:|
+| PhenX_EntityFrameworkCore_BulkInsert |  4.369 s |  1.02 |  18000.0000 |  1000.0000 |         - |  147.12 MB |        1.00 |
+| RawInsert                            | 17.146 s |  4.00 |  33000.0000 | 13000.0000 | 1000.0000 |  266.41 MB |        1.81 |
+| Linq2Db                              |  4.680 s |  1.09 |  18000.0000 |  1000.0000 |         - |  145.13 MB |        0.99 |
+| Z_EntityFramework_Extensions_EFCore  | 37.362 s |  8.72 | 192000.0000 |  6000.0000 |         - | 1554.77 MB |       10.57 |
+| EFCore_BulkExtensions                |       NA |     ? |          NA |         NA |        NA |         NA |           ? |
+
+### SQLite
+
+![SQLite benchmark results](images/bench-sqlite.png)
+
+| Method                               |    Mean | Ratio |        Gen0 |      Gen1 |      Gen2 |  Allocated | Alloc Ratio |
+|--------------------------------------|--------:|------:|------------:|----------:|----------:|-----------:|------------:|
+| PhenX_EntityFrameworkCore_BulkInsert | 2.259 s |  1.00 |  69000.0000 | 1000.0000 |         - |  554.55 MB |        1.00 |
+| RawInsert                            | 2.141 s |  0.95 |  78000.0000 | 1000.0000 |         - |   625.5 MB |        1.13 |
+| Linq2Db                              | 4.452 s |  1.98 |  65000.0000 | 5000.0000 | 2000.0000 |  646.42 MB |        1.17 |
+| Z_EntityFramework_Extensions_EFCore  | 3.008 s |  1.34 | 200000.0000 | 1000.0000 |         - | 1613.93 MB |        2.91 |
+| EFCore_BulkExtensions                | 2.850 s |  1.27 | 102000.0000 | 1000.0000 |         - |  820.09 MB |        1.48 |
+
+### SQL Server
+
+![SQL Server benchmark results](images/bench-sqlserver.png)
+
+| Method                               |    Mean | Ratio |       Gen0 |       Gen1 |      Gen2 | Allocated | Alloc Ratio |
+|--------------------------------------|--------:|------:|-----------:|-----------:|----------:|----------:|------------:|
+| PhenX_EntityFrameworkCore_BulkInsert | 3.072 s |  1.01 | 11000.0000 |  1000.0000 |         - |  87.76 MB |        1.00 |
+| RawInsert                            | 3.926 s |  1.29 | 38000.0000 | 16000.0000 | 1000.0000 | 310.32 MB |        3.54 |
+| Linq2Db                              | 3.294 s |  1.08 | 56000.0000 |  1000.0000 |         - |  450.2 MB |        5.13 |
+| Z_EntityFramework_Extensions_EFCore  | 3.773 s |  1.24 | 35000.0000 |  1000.0000 |         - | 297.98 MB |        3.40 |
+| EFCore_BulkExtensions                | 7.375 s |  2.42 | 48000.0000 | 11000.0000 | 1000.0000 | 461.71 MB |        5.26 |
+
+### Oracle
+
+![Oracle benchmark results](images/bench-oracle.png)
+
+| Method                               |     Mean | Ratio |        Gen0 |        Gen1 |      Gen2 | Allocated | Alloc Ratio |
+|--------------------------------------|---------:|------:|------------:|------------:|----------:|----------:|------------:|
+| PhenX_EntityFrameworkCore_BulkInsert |  4.943 s |  1.01 |  99000.0000 |  43000.0000 | 2000.0000 | 781.07 MB |        1.00 |
+| RawInsert                            | 13.651 s |  2.78 | 115000.0000 |  48000.0000 | 3000.0000 | 907.65 MB |        1.16 |
+| Linq2Db                              |       NA |     ? |          NA |          NA |        NA |        NA |           ? |
+| Z_EntityFramework_Extensions_EFCore  |  5.251 s |  1.07 | 107000.0000 | 101000.0000 |         - |  873.4 MB |        1.12 |
+| EFCore_BulkExtensions                |       NA |     ? |          NA |          NA |        NA |        NA |           ? |