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ビューモデルに強く型付けされたビューがあり、今朝コードを更新してから実行が非常に遅くなりました。Glimpse MVC をインストールして、何が起こっているのかをよりよく理解できるかどうかを確認しました。Glimpse は ViewModel ページを除くすべてのページで機能します - タブは情報を出力せずに消えます。

私の Glimpse ログ ファイルには次のように書かれています。

2012-06-22 13:50:29.5831|INFO|Glimpse.Core.Module|BeginRequest handling complete for requestId 64d0e726-a756-4c1a-a9c4-629231948aa2 (/SurveyResponse/Results)|
2012-06-22 13:50:29.5851|WARN|Glimpse.Mvc3.Plugin.Execution|get_Binders method of System.Web.Mvc.ControllerActionInvoker type is not proxyable.|
2012-06-22 13:50:29.5851|WARN|Glimpse.Mvc3.Plugin.Execution|set_Binders method of System.Web.Mvc.ControllerActionInvoker type is not proxyable.|
2012-06-22 13:50:29.5851|WARN|Glimpse.Mvc3.Plugin.Execution|GetType method of System.Web.Mvc.ControllerActionInvoker type is not proxyable.|
2012-06-22 13:50:29.6101|WARN|Glimpse.Mvc3.Plugin.Execution|MemberwiseClone method of System.Web.Mvc.ControllerActionInvoker type is not proxyable.|
2012-06-22 13:50:30.5192|INFO|Glimpse.Core.Module|PostRequestHandlerExecute handling complete for requestId 64d0e726-a756-4c1a-a9c4-629231948aa2 (/SurveyResponse/Results)|
2012-06-22 13:50:30.5212|INFO|Glimpse.Core.Module|PostReleaseRequestState handling complete for requestId 64d0e726-a756-4c1a-a9c4-629231948aa2 (/SurveyResponse/Results)|
2012-06-22 13:50:30.5462|WARN|Glimpse.Core.Plumbing.GlimpseSerializer|Serializer error|System.ObjectDisposedException--The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.--   at System.Data.Objects.ObjectContext.EnsureConnection()
   at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
   at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
   at System.Data.Entity.Internal.Linq.InternalQuery`1.GetEnumerator()
   at System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at Newtonsoft.Json.Serialization.JsonArrayContract.CreateWrapper(Object list)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContract collectionValueContract)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.WriteMemberInfoProperty(JsonWriter writer, Object memberValue, JsonProperty property, JsonContract contract)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContract collectionValueContract)
2012-06-22 13:50:30.5602|WARN|Glimpse.Core.Plumbing.GlimpseSerializer|Serializer error|System.ObjectDisposedException--The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.--   at System.Data.Objects.ObjectContext.EnsureConnection()
   at System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
   at System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
   at System.Data.Entity.Internal.Linq.InternalQuery`1.GetEnumerator()
   at System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at Newtonsoft.Json.Serialization.JsonArrayContract.CreateWrapper(Object list)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContract collectionValueContract)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.WriteMemberInfoProperty(JsonWriter writer, Object memberValue, JsonProperty property, JsonContract contract)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContract collectionValueContract)
2012-06-22 13:50:30.5602|INFO|Glimpse.Core.Module|Glimpse JSON payload created for requestId 64d0e726-a756-4c1a-a9c4-629231948aa2 (/SurveyResponse/Results)|
2012-06-22 13:50:30.5702|INFO|Glimpse.Core.Module|Glimpse output generated for requestId 64d0e726-a756-4c1a-a9c4-629231948aa2 (/SurveyResponse/Results)|
2012-06-22 13:50:30.5702|INFO|Glimpse.Core.Module|RequestId 64d0e726-a756-4c1a-a9c4-629231948aa2 (/SurveyResponse/Results) persisted|
2012-06-22 13:50:30.5702|INFO|Glimpse.Core.Module|EndRequest handling complete for requestId 64d0e726-a756-4c1a-a9c4-629231948aa2 (/SurveyResponse/Results)|
2012-06-22 13:50:30.6272|INFO|Glimpse.Core.Module|BeginRequest handling complete for requestId 44be221e-a7e2-4ac7-bd4c-29ae2b9ad12f (/Glimpse.axd)|
2012-06-22 13:50:30.6422|WARN|Glimpse.Core.Validator.GlimpseRequestValidator|Glimpse.Core.Validator.ContentTypeValidator invalided request (it will now be ignored) with id 44be221e-a7e2-4ac7-bd4c-29ae2b9ad12f (/Glimpse.axd)|
2012-06-22 13:50:30.6482|WARN|Glimpse.Core.Validator.GlimpseRequestValidator|Glimpse.Core.Validator.ContentTypeValidator invalided request (it will now be ignored) with id 44be221e-a7e2-4ac7-bd4c-29ae2b9ad12f (/Glimpse.axd)|
2012-06-22 13:50:30.6482|WARN|Glimpse.Core.Validator.GlimpseRequestValidator|Glimpse.Core.Validator.ContentTypeValidator invalided request (it will now be ignored) with id 44be221e-a7e2-4ac7-bd4c-29ae2b9ad12f (/Glimpse.axd)|
2012-06-22 13:50:30.6642|WARN|Glimpse.Core.Validator.GlimpseRequestValidator|Glimpse.Core.Validator.ContentTypeValidator invalided request (it will now be ignored) with id 44be221e-a7e2-4ac7-bd4c-29ae2b9ad12f (/Glimpse.axd)|

パフォーマンス低下の原因となったコードは、次の Select ステートメントをグループ内にクエリで追加していたことです。

 var data = from SurveyResponseModel in db.SurveyResponseModels
                       group SurveyResponseModel by SurveyResponseModel.MemberId into resultCount
                       select new ResultsViewModel()
                       {
                           MemberId = resultCount.Key,
                           PatientFollowUpResult = db.SurveyResponseModels.Count(r => r.PatientFollowUp),
                           ChangeCodingPracticeResult = db.SurveyResponseModels.Count(r => r.ChangeCodingPractice),

                           ChangesOthersResult = resultCount.Select(r => r.ChangesOthers),

                           YesBarriersOthersResult = resultCount.Select(r => r.YesBarriersOthers),

                           AddressBarriersOthersResult = resultCount.Select(r => r.AddressBarriersOthers),
                           TotalResponsesResult = db.SurveyResponseModels.Count(),
                       };
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1 に答える 1

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ここで起こっていることは、Glimpse がモデル内のプロパティの遅延読み込みをトリガーしていることです。残念ながら、現時点では Glimpae はこのケースをサポートしていません。これが当てはまるかどうかをテストするには、表示タブを無効にして、同じ問題があるかどうかを確認してください。

于 2012-06-23T13:02:23.870 に答える