SmartSql

# .NET 之 ORM 性能评测

# Why

  1. 你应该总能听到某ORM性能比Dapper高
  2. 你应该有如下疑问：
    1. 基准测试是否权威
    2. 基准测试的方式是否合理
    3. 基准测试的标准是否能够统一
    4. 统一基准测试标准/规范

# 如何进行姿势正确的性能测试

相信大家对 Dapper 的性能，以及基准测试的权威性是没有疑问的（否则不会有那么多ORM在做性能测试的时候直接选型Dapper）,那么我们就使用 Dapper 性能基准测试 (opens new window) 来作为我们的基准测试模板，并加入一些没有纳入基准测试的 ORM 。这样从合理性/可信度就大体有了一个标准和保障。

接下来 fork Dapper GitHub 仓库，并添加了 SmartSql (opens new window)/IBatis.Net/FreeSql (opens new window)/SqlSugar (opens new window)/Chloe (opens new window)

源代码地址：https://github.com/Ahoo-Wang/Dapper (opens new window),如对测试结果，测试方法有疑问请给我提交issue。

# 如何自己进行以上基准测试

强烈建议读者按照以下步骤自己运行基准测试。

  1. Git-Clone https://github.com/Ahoo-Wang/Dapper (opens new window)
  2. cd Dapper/Dapper.Tests.Performance
  3. dotnet publish -c release
  4. 运行 Dapper.Tests.Performance.exe
  5. 提示输入，请输入 "*" 运行所有基准测试
  6. 等待测试结果，目录：BenchmarkDotNet.Artifacts 下会有一个日志文件，和 results 文件夹 (测试结果文件存放在此目录)

# 基准测试结果

重要提示：FreeSql/SqlSugar 官方nuget包为非Release版本，所以测试结果会有影响，仅供参考。


BenchmarkDotNet=v0.11.1, OS=Windows 10.0.17763
Intel Core i7-8750H CPU 2.20GHz (Max: 2.21GHz) (Coffee Lake), 1 CPU, 12 logical and 6 physical cores
  [Host]   : .NET Framework 4.7.2 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.8.3801.0
  ShortRun : .NET Framework 4.7.2 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.8.3801.0
ORM Method Return Mean Rank Gen 0 Gen 1 Gen 2 Allocated
Belgrade ExecuteReader Post 78.74 us 1 2.2500 0.6250 - 10.63 KB
LINQ to DB 'First (Compiled)' Post 97.61 us 2 0.5000 - - 2.67 KB
LINQ to DB Query<T> Post 103.05 us 3 1.3750 0.1250 - 6.91 KB
Hand Coded SqlCommand Post 107.37 us 4 2.0000 1.0000 0.5000 12.29 KB
Dapper QueryFirstOrDefault<dynamic> dynamic 110.83 us 5 2.8750 0.1250 - 13.57 KB
Dapper QueryFirstOrDefault<T> Post 111.65 us 5 2.2500 1.0000 0.3750 13.53 KB
Hand Coded DataTable dynamic 114.78 us 6 2.0000 0.5000 - 12.51 KB
PetaPoco 'Fetch<T> (Fast)' Post 114.95 us 6 2.2500 0.8750 0.2500 13.71 KB
Dapper 'Query<dynamic> (buffered)' dynamic 115.54 us 6 2.2500 1.0000 0.2500 13.93 KB
PetaPoco Fetch<T> Post 119.76 us 7 2.5000 1.0000 0.2500 14.66 KB
Dapper 'Query<T> (buffered)' Post 122.10 us 8 2.2500 0.8750 0.3750 13.86 KB
Susanoo 'Execut<dynamic> (Static)' dynamic 122.68 us 8 2.5000 0.7500 0.2500 15.03 KB
Massive 'Query (dynamic)' dynamic 122.82 us 8 2.3750 0.8750 0.2500 14.25 KB
ServiceStack SingleById<T> Post 123.93 us 8 3.0000 0.7500 0.2500 17.59 KB
LINQ to DB First Post 124.53 us 8 1.1250 0.1250 - 5.53 KB
SmartSql QuerySingleSqlParameterCollection Post 125.26 us 8 2.5000 0.7500 0.2500 15.48 KB
SmartSql QuerySingle Post 126.79 us 9 2.5000 0.7500 0.2500 15.59 KB
LINQ to SQL 'First (Compiled)' Post 127.17 us 9 2.0000 - - 9.87 KB
SmartSql GetById Post 127.24 us 9 2.7500 0.7500 0.2500 15.89 KB
SmartSql QuerySingleStrongRequest Post 127.70 us 9 2.5000 0.7500 0.2500 15.51 KB
SmartSql QuerySingleFromXml Post 128.27 us 9 2.7500 0.7500 0.2500 16.23 KB
Susanoo 'Execute<T> (Static)' Post 128.92 us 9 2.5000 0.7500 0.2500 15.05 KB
SmartSql QuerySingleStrongRequest<dynamic> dynamic 129.88 us 9 2.7500 1.0000 0.5000 16.54 KB
SmartSql QuerySingleSqlParameterCollection<dynamic> dynamic 130.96 us 9 2.5000 0.7500 0.2500 16.51 KB
Dapper 'Contrib Get<T>' Post 132.10 us 9 2.2500 1.0000 0.2500 14.51 KB
DevExpress.XPO FindObject<T> Post 137.14 us 10 6.5000 0.2500 - 29.97 KB
Susanoo 'Execute<dynamic> (Cache)' dynamic 140.24 us 11 3.2500 1.0000 0.5000 20.48 KB
Susanoo 'Execute<T> (Cache)' Post 141.23 us 11 3.2500 0.7500 0.2500 20.96 KB
EF 6 SqlQuery Post 154.68 us 12 4.7500 0.7500 - 27.96 KB
DevExpress.XPO GetObjectByKey<T> Post 160.87 us 13 5.2500 1.2500 - 32.35 KB
IBatis QueryForObject Post 163.87 us 14 2.7500 0.7500 0.2500 16.59 KB
Dapper 'Query<T> (unbuffered)' Post 166.28 us 15 2.2500 0.7500 0.2500 13.89 KB
Dapper 'Query<dynamic> (unbuffered)' dynamic 171.82 us 16 2.2500 0.7500 0.2500 13.93 KB
DevExpress.XPO Query<T> Post 172.38 us 16 7.5000 0.2500 - 35.02 KB
FreeSql FromSqlFirstDynamic dynamic 180.44 us 17 3.2500 0.7500 0.2500 19.38 KB
EF Core 'First (Compiled)' Post 188.02 us 18 3.5000 - - 16.14 KB
FreeSql FromSqlFirst Post 196.92 us 19 3.2500 0.7500 0.2500 19.17 KB
NHibernate Get<T> Post 201.46 us 20 5.7500 0.7500 - 32.62 KB
NHibernate HQL Post 207.57 us 21 5.5000 0.7500 - 35.11 KB
Chloe First Post 209.26 us 21 5.0000 0.7500 0.2500 29.85 KB
EF Core SqlQuery Post 234.51 us 22 4.0000 - - 20.64 KB
EF Core First Post 238.67 us 23 4.2500 - - 20.33 KB
EF 6 First Post 243.86 us 24 10.5000 - - 48.44 KB
LINQ to SQL ExecuteQuery Post 250.54 us 25 7.0000 1.0000 0.5000 42.48 KB
EF Core 'First (No Tracking)' Post 250.59 us 25 3.7500 0.7500 0.2500 21.44 KB
NHibernate Criteria Post 256.87 us 26 11.0000 1.0000 - 65.64 KB
EF 6 'First (No Tracking)' Post 314.69 us 27 9.0000 1.0000 - 55.27 KB
NHibernate SQL Post 336.02 us 28 19.0000 1.0000 - 101.4 KB
FreeSql First Post 429.83 us 29 5.0000 1.0000 0.5000 31.56 KB
SqlSugar First Post 583.49 us 30 10.0000 1.0000 - 62.5 KB
LINQ to SQL First Post 761.03 us 31 3.0000 1.0000 - 14.7 KB
NHibernate LINQ Post 778.43 us 32 10.0000 2.0000 - 64.03 KB

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