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Simple performance and readability test: RoslynScript vs. IronPython from C#
Performance ratio 1:2,7-3
Readability: both scripting engines required some knowledge about underlying APIs
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async void Main() | |
{ | |
GetType().Assembly.FullName.Dump(); | |
IEnumerable<Model.ProcessingModel> models = | |
Enumerable.Range(0, 1000000) | |
.Select(n => new Model.ProcessingModel { InputA = n, InputB = n * 0.5M, Factor = 0.050M }); | |
var sw = Stopwatch.StartNew(); | |
var pyCodeReadingTask = Task.FromResult( | |
File.ReadAllText(@"D:\work\Courses\CaaS\Snippets\sample.py")); | |
var pyEngine = Python.CreateEngine(); | |
var pyScope = pyEngine.CreateScope(); | |
var source = pyEngine.CreateScriptSourceFromString(await pyCodeReadingTask, SourceCodeKind.File); | |
source.Execute(pyScope); | |
dynamic businessRule = pyEngine.Operations.Invoke(pyScope.GetVariable("BusinessRule")); | |
IEnumerable<dynamic> results = | |
models | |
.Select(model => businessRule.calculate(model)) | |
.ToList(); | |
sw.Stop(); | |
string.Format("Time taken: {0}ms", sw.Elapsed.TotalMilliseconds).Dump(); | |
results | |
.Zip(models, (result, model) => new { result, model }) | |
.Select(@group => | |
new | |
{ | |
@return = @group.result, | |
ResultModel = @group.model | |
}) | |
.Take(10) | |
.Dump(); | |
} | |
namespace Model | |
{ | |
public class ProcessingModel | |
{ | |
public decimal InputA { get; set; } | |
public decimal InputB { get; set; } | |
public decimal Factor { get; set; } | |
public decimal? Result { get; set; } | |
public decimal? Delta { get; set; } | |
public string Description { get; set; } | |
public decimal? Addition { get; set; } | |
} | |
public class ReportModel | |
{ | |
public decimal? Σ { get; set; } | |
public decimal? Δ { get; set; } | |
public string λ { get; set; } | |
} | |
} |
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void Main() | |
{ | |
IEnumerable<Model.ProcessingModel> models = | |
Enumerable.Range(0, 100000) | |
.Select(n => new Model.ProcessingModel { InputA = n, InputB = n * 0.5M, Factor = 0.050M }); | |
var sw = Stopwatch.StartNew(); | |
var engine = new ScriptEngine(); | |
new[] | |
{ | |
typeof (Math).Assembly, | |
this.GetType().Assembly | |
}.ToList().ForEach(assembly => engine.AddReference(assembly)); | |
new[] | |
{ | |
"System", "System.Math", | |
typeof(Model.ProcessingModel).Namespace | |
} .ToList().ForEach(@namespace => engine.ImportNamespace(@namespace)); | |
// no dynamic allowed | |
// no async/await allowed | |
var script = | |
@" | |
Result = InputA + InputB * Factor; | |
Delta = Math.Abs((Result ?? 0M) - InputA); | |
Description = ""Some description""; | |
new Model.ReportModel { Σ = Result, Δ = Delta, λ = Description } | |
"; | |
var submissionModel = new Model.ProcessingModel(); | |
var session = engine.CreateSession(submissionModel); | |
var submission = session.CompileSubmission<dynamic>(script); | |
IEnumerable<dynamic> results = | |
models | |
.Select(model => | |
{ | |
//submissionModel.InjectFrom(model); | |
submissionModel.InputA = model.InputA; | |
submissionModel.InputB = model.InputB; | |
submissionModel.Factor = model.Factor; | |
return submission.Execute(); | |
}) | |
.ToList(); | |
sw.Stop(); | |
string.Format("Time taken: {0}ms", sw.Elapsed.TotalMilliseconds).Dump(); | |
results | |
.Zip(models, (result, model) => new { result, model }) | |
.Select(@group => | |
new | |
{ | |
@return = @group.result, | |
ResultModel = @group.model | |
}) | |
.Take(10) | |
.Dump(); | |
} | |
namespace Model | |
{ | |
public class ProcessingModel | |
{ | |
public decimal InputA { get; set; } | |
public decimal InputB { get; set; } | |
public decimal Factor { get; set; } | |
public decimal? Result { get; set; } | |
public decimal? Delta { get; set; } | |
public string Description { get; set; } | |
public decimal? Addition { get; set; } | |
} | |
public class ReportModel | |
{ | |
public decimal? Σ { get; set; } | |
public decimal? Δ { get; set; } | |
public string λ { get; set; } | |
} | |
} |
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# -*- coding: utf8 -*- | |
import math | |
import clr | |
clr.AddReference("query_aicotw") # linq snippet assembly name | |
from Model import * | |
class BusinessRule: | |
def calculate(self, model): | |
result = model.InputA + model.InputB * model.Factor | |
delta = math.fabs(result - model.InputA) | |
description = 'Some description' | |
resultModel = ReportModel() | |
resultModel.Σ = result | |
resultModel.Δ = delta | |
resultModel.λ = description | |
return resultModel |
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While there are some 'voodoo' with Submissions for Roslyn, it executes 3x-3.5x faster compared to IronPython from C# code