6

我有一个使用实体框架的 MVC 3 网站，它最近刚刚开始因特定操作而崩溃。我希望我有更多信息，但我可以从 Windows 事件查看器中获取的信息是：

Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7a5f8
Faulting module name: System.Data.Entity.ni.dll, version: 4.0.30319.1, time stamp: 0x4ba1e2fd
Exception code: 0xc00000fd
Fault offset: 0x003aac6a
Faulting process id: 0x2f0
Faulting application start time: 0x01ce540a70477360
Faulting application path: C:\Windows\SysWOW64\inetsrv\w3wp.exe
Faulting module path: C:\Windows\assembly\NativeImages_v4.0.30319_32\System.Data.Entity\dc0c74bc42bbaeffcb7158c7ed0f1653\System.Data.Entity.ni.dll
Report Id: 3659a820-bffe-11e2-8207-404094d3cf82

如果我停止 IIS，删除本机映像，然后重新启动 IIS，一切都很好。但是，一两天后，问题就会再次出现。

有人对此有想法吗？似乎在由 自动创建的图像中发生了一些事情ngen.exe，但我不知道从哪里开始调试。谢谢！

更新

我终于能够捕捉到故障的完整内存转储。这是核心的堆栈溢出问题。这是堆栈跟踪，带有重复位...

System.Data.Query.InternalTrees.BasicOpVisitorOfT`1[[System.__Canon, mscorlib]].VisitNode(System.Data.Query.InternalTrees.Node)     086a9990     0609755c     0f16e1a0     59c4a149    
System.Data.Query.InternalTrees.NodeInfoVisitor.RecomputeNodeInfo(System.Data.Query.InternalTrees.Node)     01f8f258     0609755c     06412d6c     0f16e1ec    
System.Data.Query.InternalTrees.Node.InitializeNodeInfo(System.Data.Query.InternalTrees.Command)     086a97f0     59c64fb9     0f16e1b8     5a1d255e    
System.Data.Query.InternalTrees.Node.GetExtendedNodeInfo(System.Data.Query.InternalTrees.Command)     06412da4     0f16e204     59c64ef1     06412da4    
System.Data.Query.InternalTrees.BasicOpVisitorOfT`1[[System.__Canon, mscorlib]].Visit(System.Data.Query.InternalTrees.OuterApplyOp, System.Data.Query.InternalTrees.Node)     06412da4     0f16e220     59c12799     5996fb84    
System.Data.Query.InternalTrees.OuterApplyOp.Accept[[System.__Canon, mscorlib]](System.Data.Query.InternalTrees.BasicOpVisitorOfT`1<System.__Canon>, System.Data.Query.InternalTrees.Node)     5996fb84     06412da4     01f8f098     06412da4    
System.Data.Query.InternalTrees.BasicOpVisitorOfT`1[[System.__Canon, mscorlib]].VisitNode(System.Data.Query.InternalTrees.Node)     086a97f0     06412da4     0f16e244     59c4a149    
System.Data.Query.InternalTrees.NodeInfoVisitor.RecomputeNodeInfo(System.Data.Query.InternalTrees.Node)     01f8f258     06412da4     086a9650     0f16e2b4    
System.Data.Query.InternalTrees.Node.InitializeNodeInfo(System.Data.Query.InternalTrees.Command)     06097914     59c4a751     0f16e26c     00000000    
System.Data.Query.InternalTrees.Node.GetExtendedNodeInfo(System.Data.Query.InternalTrees.Command)     0609794c     0f16e2dc     59c12799     599713cc    
System.Data.Query.InternalTrees.ProjectOp.Accept[[System.__Canon, mscorlib]](System.Data.Query.InternalTrees.BasicOpVisitorOfT`1<System.__Canon>, System.Data.Query.InternalTrees.Node)     599713cc     0609794c     01f8f098     0609794c    
System.Data.Query.InternalTrees.BasicOpVisitorOfT`1[[System.__Canon, mscorlib]].VisitNode(System.Data.Query.InternalTrees.Node)     086a9650     0609794c     0f16e300     59c4a149    
System.Data.Query.InternalTrees.NodeInfoVisitor.RecomputeNodeInfo(System.Data.Query.InternalTrees.Node)     086a94b0     0609794c     0f16e334     0f16e354    
System.Data.Query.InternalTrees.Node.InitializeNodeInfo(System.Data.Query.InternalTrees.Command)     086a94b0     03be2b5c     01f8f258     06097c50    
System.Data.Query.InternalTrees.NodeInfoVisitor.Visit(System.Data.Query.InternalTrees.PhysicalProjectOp, System.Data.Query.InternalTrees.Node)     06097c88     0f16e37c     59c12799     59971884    
System.Data.Query.InternalTrees.PhysicalProjectOp.Accept[[System.__Canon, mscorlib]](System.Data.Query.InternalTrees.BasicOpVisitorOfT`1<System.__Canon>, System.Data.Query.InternalTrees.Node)     59971884     06097c88     01f8f098     06097c88    
System.Data.Query.InternalTrees.BasicOpVisitorOfT`1[[System.__Canon, mscorlib]].VisitNode(System.Data.Query.InternalTrees.Node)     086a94b0     06097c88     0f16e3a0     59c4a149    
System.Data.Query.InternalTrees.NodeInfoVisitor.RecomputeNodeInfo(System.Data.Query.InternalTrees.Node)     06097c88     06097c88     086a9460     0f16e3d4    
System.Data.Query.InternalTrees.Node.InitializeNodeInfo(System.Data.Query.InternalTrees.Command)     086a9494     59c49e5c     0f16e3c8     59c0ffb8    
System.Data.Query.PlanCompiler.TransformationRulesContext.GetHashCode(System.Data.Query.InternalTrees.Node)     00000000     00000000     06097c88     01deb0f0    
System.Data.Query.PlanCompiler.TransformationRules.Process(System.Data.Query.PlanCompiler.PlanCompiler, System.Collections.ObjectModel.ReadOnlyCollection`1<System.Collections.ObjectModel.ReadOnlyCollection`1<System.Data.Query.InternalTrees.Rule>>, Boolean ByRef)     0f16e40c     00000000     00000000     06b605bc    
System.Data.Query.PlanCompiler.TransformationRules.Process(System.Data.Query.PlanCompiler.PlanCompiler, System.Data.Query.PlanCompiler.TransformationRulesGroup)     05d6bd90     06a8ac64     06b605bc     0f16e4f4    
System.Data.Query.PlanCompiler.PlanCompiler.Compile(System.Collections.Generic.List`1<System.Data.Query.PlanCompiler.ProviderCommandInfo> ByRef, System.Data.Query.InternalTrees.ColumnMap ByRef, Int32 ByRef, System.Data.Common.Utils.Set`1<System.Data.Metadata.Edm.EntitySet> ByRef)     01f8f04c     0f16e4ec     0f16e4f0     00000000    
System.Data.EntityClient.EntityCommandDefinition..ctor(System.Data.Common.DbProviderFactory, System.Data.Common.CommandTrees.DbCommandTree)     01f8efe0     01de3f40     01c645c4     0213e214    
System.Data.EntityClient.EntityProviderServices.CreateCommandDefinition(System.Data.Common.DbProviderFactory, System.Data.Common.CommandTrees.DbCommandTree)     0213e214     01de3f40     01c645c4     0213e214    
System.Data.EntityClient.EntityProviderServices.CreateDbCommandDefinition(System.Data.Common.DbProviderManifest, System.Data.Common.CommandTrees.DbCommandTree)     0213e214     0208a8f0     01f47934     0213e214    
System.Data.Common.DbProviderServices.CreateCommandDefinition(System.Data.Common.CommandTrees.DbCommandTree)     00000000     00000000     00000000     00000000    
System.Data.Objects.Internal.ObjectQueryExecutionPlan.Prepare(System.Data.Objects.ObjectContext, System.Data.Common.CommandTrees.DbQueryCommandTree, System.Type, System.Data.Objects.MergeOption, System.Data.Objects.Span, System.Collections.ObjectModel.ReadOnlyCollection`1<System.Collections.Generic.KeyValuePair`2<System.Data.Objects.ObjectParameter,System.Data.Objects.ELinq.QueryParameterExpression>>)     00000000     00000000     00000003     01f5b740    
System.Data.Objects.ELinq.ELinqQueryState.GetExecutionPlan(System.Nullable`1<System.Data.Objects.MergeOption>)     00000000     00000000     01f5c228     00000000    
System.Data.Objects.ObjectQuery`1[[System.__Canon, mscorlib]].GetResults(System.Nullable`1<System.Data.Objects.MergeOption>)     00000000     00000000     0f16e670     0208a8cc    
System.Data.Objects.ObjectQuery`1[[System.__Canon, mscorlib]].System.Collections.Generic.IEnumerable<T>.GetEnumerator()     00000000     00000000     0f16e704     00000000    
System.Linq.Buffer`1[[System.__Canon, mscorlib]]..ctor(System.Collections.Generic.IEnumerable`1<System.__Canon>)     0f4cb654     00000000     00000000     00000000    
System.Linq.Enumerable.ToArray[[System.__Canon, mscorlib]](System.Collections.Generic.IEnumerable`1<System.__Canon>)     02089768     020883d4     020881fc     02088104    
OptimizerCore.Models.agField.GetFieldPreloadMidpointInformation(System.Collections.Generic.IEnumerable`1<Int32>)     05e2e50c     05e2e50c     5d664381     05db9a64    
System.Web.Mvc.ActionMethodDispatcher.Execute(System.Web.Mvc.ControllerBase, System.Object[])     05db9a64     05e22d60     05daee58     01d68350    
System.Web.Mvc.ReflectedActionDescriptor.Execute(System.Web.Mvc.ControllerContext, System.Collections.Generic.IDictionary`2<System.String,System.Object>)     05daf334     05e23b4c     05e23b0c     05db9a3c    
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(System.Web.Mvc.ControllerContext, System.Web.Mvc.ActionDescriptor, System.Collections.Generic.IDictionary`2<System.String,System.Object>)     05daf334     05e22ca0     05e23bcc     00000000    
System.Web.Mvc.ControllerActionInvoker+<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12()     0f16e90c     05daf394     05daf1b0     00000000    
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(System.Web.Mvc.IActionFilter, System.Web.Mvc.ActionExecutingContext, System.Func`1<System.Web.Mvc.ActionExecutedContext>)     05daf3b8     05e23c00     5d66622e     61954b4e    
System.Web.Mvc.ControllerActionInvoker+<>c__DisplayClass15+<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14()     05daf3ec     05e23b0c     5d666580     05e22ca0    
System.Web.Mvc.ControllerActionInvoker+<>c__DisplayClass15+<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14()     05daf334     05daee58     05daf0b4     05daef68    
System.Web.Mvc.ControllerActionInvoker.InvokeAction(System.Web.Mvc.ControllerContext, System.String)     05bf96e4     05bf961c     05c0974c     00000000    
System.Web.Mvc.Controller.ExecuteCore()     01d6842c     00000000     00000000     00000000    
System.Web.Mvc.ControllerBase.Execute(System.Web.Routing.RequestContext)     0f16eb08     5d672ca6     05bfdc94     0f16eb2c    
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(System.Web.Routing.RequestContext)     05bfdc94     0f16eb2c     5d66ad06     00000000    
System.Web.Mvc.MvcHandler+<>c__DisplayClass6+<>c__DisplayClassb.<BeginProcessRequest>b__5()     00000000     01dcf71c     5d68febd     5d68fcdf    
System.Web.Mvc.Async.AsyncResultWrapper+<>c__DisplayClass1.<MakeVoidDelegate>b__0()     5d5b8c28     01dcf7ac     0f16eb4c     5d65aaf8    
System.Web.Mvc.MvcHandler+<>c__DisplayClasse.<EndProcessRequest>b__d()     5d65ab27     01dcf7a0     0f16eb5c     5d67244d    
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(System.Action)     01dcf71c     05bfbb70     0f16eb64     5d67233a    
System.Web.Mvc.MvcHandler.EndProcessRequest(System.IAsyncResult)     0f16eb90     5e0ef242     05be7470     00000000    
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(System.IAsyncResult)     05be7470     00000000     00000000     00000000    
System.Web.HttpApplication+CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()     0f16ec5c     61d1965e     61d19673     00000000    
System.Web.HttpApplication.ExecuteStep(IExecutionStep, Boolean ByRef)     0f16ec24     05d11148     00000000     05bebd0c    
System.Web.HttpApplication+PipelineStepManager.ResumeSteps(System.Exception)     00000000     00000000     0f16eca0     0f16ecb0    
System.Web.HttpApplication.BeginProcessRequestNotification(System.Web.HttpContext, System.AsyncCallback)     05bc3134     05be7294     05bc2e34     00000080    
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(System.Web.Hosting.IIS7WorkerRequest, System.Web.HttpContext)     05be7470     9572145a     61cf5d80     0f16f218    
System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr, IntPtr, IntPtr, Int32)     00000000     0000000c     00000000     00000000    
System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr, IntPtr, IntPtr, Int32)     00c11198     01872c94     0000000c     00000000    
webengine4!W3_MGD_HANDLER::ProcessNotification+5b     01871ba8     00000100     00000000     0f16ee1c    
webengine4!W3_MGD_HANDLER::DoWork+250     00000080     00000000     00efb22c     01871c00    
webengine4!RequestDoWork+2da     00000080     00000000     00efb22c     01871ba8    
webengine4!CMgdEngHttpModule::OnExecuteRequestHandler+1a     01871ba8     01871c00     01871bac     0f16eec8    
iiscore!NOTIFICATION_CONTEXT::RequestDoWork+128     00efb22c     01871ba8     00000000     01871c00    
iiscore!NOTIFICATION_CONTEXT::CallModulesInternal+305     00000000     00000000     00000000     01871ba8    
iiscore!NOTIFICATION_CONTEXT::CallModules+28     00000000     00000000     00000000     01871ba8    
iiscore!W3_CONTEXT::DoStateRequestExecuteHandler+36     00000000     00000000     00000000     00000000    
iiscore!W3_CONTEXT::DoWork+d7     00000000     00000000     00000001     01871ba8    
iiscore!W3_MAIN_CONTEXT::ContinueNotificationLoop+1f     00000000     00000000     768c1484     0f16f1e0    
iiscore!W3_MAIN_CONTEXT::ProcessIndicateCompletion+1f     00000000     01872c94     0f16f1f4     71b4d641    
iiscore!W3_CONTEXT::IndicateCompletion+75     00000000     0f16f2a8     0f16f218     0f16f204    
webengine4!W3_MGD_HANDLER::IndicateCompletion+3d     00000000     0e8ecc18     0f16f254     5d8d8bbd    
webengine4!MgdIndicateCompletion+24     01872c94     0f16f2a8     9572145a     61cf5d80    
DomainNeutralILStubClass.IL_STUB_PInvoke(IntPtr, System.Web.RequestNotificationStatus ByRef)     9572145a     61cf5d80     0f16f3ec     5d7467e4    
System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr, IntPtr, IntPtr, Int32)     00000004     00000003     00000000     00000000    
System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr, IntPtr, IntPtr, Int32)     0e8ecc18     0f16f3a0     61fbf077     0f16f510    
clr!UM2MThunk_WrapperHelper+10     0f16f510     00000010     00671fa3     00672038    
clr!UM2MThunk_Wrapper+8c     0f16f4a8     9a0857ca     0e8ecc18     00000002    
clr!Thread::DoADCallBack+f0     00000002     61fbefeb     0f16f4a8     00000001    
clr!UM2MDoADCallBack+c0     01924570     ffffffff     0f16f510     00000010    
0x00672020     00000000     01872c94     00000003     00000004    
webengine4!W3_MGD_HANDLER::ProcessNotification+5b     01872c94     71b508c8     0f16f58c     61e75eaf    
webengine4!ProcessNotificationCallback+36     01872c94     9a0856c6     0000ffff     00010002    
clr!UnManagedPerAppDomainTPCount::DispatchWorkItem+195     0f16f5ef     0f16f5ee     9a0856b6     00000000    
clr!ThreadpoolMgr::NewWorkerThreadStart+20b     00000000     9a08552e     00000000     61e76a99    
clr!ThreadpoolMgr::WorkerThreadStart+3d1     00000000     0000027f     00000000     00000000    
clr!Thread::intermediateThreadProc+4b     0e8b0b60     0f16f854     778e9f42     0e8b0b60    
kernel32!BaseThreadInitThunk+e     0e8b0b60     78e16e6f     00000000     00000000    
ntdll!__RtlUserThreadStart+70     61da59c0     0e8b0b60     ffffffff     779775ad    
ntdll!_RtlUserThreadStart+1b

这一点特别似乎是递归的，最终是硬故障：

System.Data.Query.InternalTrees.Node.GetExtendedNodeInfo(System.Data.Query.InternalTrees.Command)     0609794c     0f16e2dc     59c12799     599713cc    
System.Data.Query.InternalTrees.ProjectOp.Accept[[System.__Canon, mscorlib]](System.Data.Query.InternalTrees.BasicOpVisitorOfT`1<System.__Canon>, System.Data.Query.InternalTrees.Node)     599713cc     0609794c     01f8f098     0609794c    
System.Data.Query.InternalTrees.BasicOpVisitorOfT`1[[System.__Canon, mscorlib]].VisitNode(System.Data.Query.InternalTrees.Node)     086a9650     0609794c     0f16e300     59c4a149    
System.Data.Query.InternalTrees.NodeInfoVisitor.RecomputeNodeInfo(System.Data.Query.InternalTrees.Node)     086a94b0     0609794c     0f16e334     0f16e354    
System.Data.Query.InternalTrees.Node.InitializeNodeInfo(System.Data.Query.InternalTrees.Command)

我相信这是导致问题的代码块：（包含大约 1,600 个项目的数组在哪里）fieldIDs：int

var query = db.BaseDB.agZoneCoordinates
                        .Where(x => fieldIDs.Contains(x.agZone.FieldID))
                        .Select(x => new {
                            x.agZone.FieldID,
                            x.Latitude,
                            x.Longitude
                        })
                        .AsNoTracking()
                        .ToArray();

我尝试减小查询大小，以便它以 200 左右的块工作，但它仍然崩溃。是否有任何实体框架开发人员看到这种情况发生？是什么让 EF 递归？

4

2 回答 2

1

我们最近遇到了与您的情况非常相似的堆栈溢出，我们正在执行与您的场景（大量 Ids）和 EF 使用非常相似的事情，除了我们还调用Distinct了我们正在传递的 Ids 列表。因此，以您的示例为基础，我们的调用看起来像：

var query = db.BaseDB.agZoneCoordinates
               .Where(x => fieldIDs.Distinct().Contains(x.agZone.FieldID))
               .Select(x => new {
                   x.agZone.FieldID,
                   x.Latitude,
                   x.Longitude
                   })
               .AsNoTracking()
               .ToArray();

由于 lambda 用于IQueryable，因此这会产生 EF 必须处理的巨大表达式树的效果，而且显然它不能很好地处理它。Distinct通过在 lambda 之外进行调用，我们解决了我们的问题并实际上提高了大型列表的性能。FWIW，我在没有Distinct调用的情况下尝试了一个大列表（100K），这也有效，所以我们的问题肯定是把Distinct调用作为 lambda 的一部分，而不是列表的绝对大小。

于 2019-05-21T23:26:42.323 回答
0

我会考虑接受您的声明并将其更改为包含。我很确定，否则 agZone 会在选择中延迟加载：

var query = db.BaseDB.agZoneCoordinates
                    .Where(x => fieldIDs.Contains(x.agZone.FieldID))
                    .Include(x=>x.agZone)
                    .Select(x => new {
                        x.agZone.FieldID,
                        x.Latitude,
                        x.Longitude
                    })
                    .AsNoTracking()
                    .ToArray();

如果您使用的是 EF 4 而不是 4.1 或更高版本，则必须在没有 lambda 的情况下编写它。

var query = db.BaseDB.agZoneCoordinates
                    .Where(x => fieldIDs.Contains(x.agZone.FieldID))
                    .Include("BaseDb.agZone") //May require tweaking to how your model is defined
                    .Select(x => new {
                        x.agZone.FieldID,
                        x.Latitude,
                        x.Longitude
                    })
                    .AsNoTracking()
                    .ToArray();
于 2015-03-28T15:10:53.093 回答