List of duplicated rules between SonarAnalyzer.CSharp and other analyzers?

  • which versions are you using (SonarAnalyzer.CSharp

Hi, I was wondering if you have or know of a list of rules that are duplicated between sonar and other analyzers like Microsoft.CodeAnalysis.NetAnalyzers, for example S1481 exist in NetAnalyzers as the rule CS0168.

I ask because our building times are getting very slow and I want to disable rules that are unnecessary because are validated for another rule.

This is an example of the times we are seeing during build

Analyzer Report
    Total analyzer execution time: 31.154 seconds.
    Time (s)    %   Analyzer
    20.252   65   SonarAnalyzer.CSharp, Version=, Culture=neutral, PublicKeyToken=c5b62af9de6d7244
        9.443   30      SonarAnalyzer.Rules.CSharp.SymbolicExecutionRunner (S1944, S2053, S2222, S2259, S2583, S2589, S3329, S3655, S3900, S3949, S3966, S4158, S5773)
        3.522   11      SonarAnalyzer.Rules.CSharp.VariableUnused (S1481)
        0.974    3      SonarAnalyzer.Rules.CSharp.DeadStores (S1854)
    4.774   15   Microsoft.CodeAnalysis.NetAnalyzers, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35
        1.608    5      Microsoft.NetCore.Analyzers.Runtime.DisposeObjectsBeforeLosingScope (CA2000)
        1.016    3      Microsoft.CodeQuality.Analyzers.Maintainability.AvoidDeadConditionalCode (CA1508)
        0.172   <1      Microsoft.NetCore.Analyzers.Data.ReviewSqlQueriesForSecurityVulnerabilities (CA2100)

Juan Zamudio


The current version of the SonarScanner for .NET is 5.13. Is that maybe your SonarQube version that you’ve listed? If so, it’s a bit out of date. SonarQube 9.9 LTS is the current LTS and 10.0 is the latest version. We made improvements to analysis speed in the 9-series, so if you’re on SonarQube 9.3, upgrading might help analysis speed (in addition to bringing you lots of improvements, fixes and new features!).

Regarding rule overlap, we generally try not to do that. We decided a while ago to compete with innovation, rather than re-implementing others’ rules.


We are using the global tool (version 5.13.0) with dotnet 7