Entity framework slow on first query

03-Aug-2022 ... Lean object-to-database mappers like Dapper have consistently outperformed EF in query performance, but every new release of Microsoft's library ...Oct 18, 2010 · I have done some timing tests to try and find out where the problem lies and i was a bit surprised to see that it looks like it is the SQL server that is slow on the first query. Timings was as follows:.NET testing application. - First Query: 29,6 seconds - Second Query: 3,2 seconds. SQL Profiler - First Query: 27 seconds - Second Query: 3,2 seconds 2 days ago · We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ... 08-Oct-2010 ... Entity Framework - First query slow · Run the first query with EF, the SQL statement is slower then any secondary query · Dispose the context/ ...Best coding solution for query Database first create entity framework 6.1.1 model using system.data.sqlite 1.0.93. Home Services Web Development ... This updated entity framework from 6.1 to 6.1.1, and it updated sqlite to 1.0.93. I wanted to update my model from my latest database. I did the steps of 1) Model from Database 2) Select sqlite database 3) Generate.help with linq query; Setting foreign key id to null in EF is very VERY slow; Linq SelectMany in Entity Framework; How to mock entity framework DbRawSqlQuery object using moq? Connection string for MySQL missing in other projects; Ef7 One To many relationships HasOne WithMany and Attatch; What is the proper way to configure multiple one-to-one ...The slow query happens every time there is a "first query" in EF. E.g. 1) Run the first query with EF, the SQL statement is slower then any secondary query. 2) Dispose the …I'm having a serious issue with MySQL and Entity Framework 4.0. I have dropped a Table onto the EF Designer surface, and everything seems OK. However, when I perform a query in the following fashion: C# Entity FrameWork MySQL Slow Queries Count()-mysql. Most engaging questions postgresql. PostgreSQL Grouping error; Selecting top values without limit; Why do Postgres Hstore indexes work for ? (operator) and not for EXIST (function)? ... I'm having a serious issue with MySQL and Entity Framework 4.0. I have dropped a Table onto the EF Designer surface, …13-Feb-2020 ... Issues we've faced using Entity Framework · Slow SELECT statement processing · Poor data materialization · Slow INSERT/UPDATE query processing.2 days ago · We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ... bash case default exitFeb 14, 2011 · Hi! I'm currently evaluating EF4 as an option to communicate with our database, but are experiencing a slow performance on the first query. After this any other query is fast ... I am currently working on a projects with millions rows. Doing it with linq to sql, I am making sure I am triggering data to model at the end. The .net API works well with small queries, but when it comes to bigger ones, it could take up to 2-3 sec. Not that bad. But when I load 4-5 queries at same time. It's like there is a bottleneck somewhere.19-Oct-2019 ... DOWNLOAD THE SOURCE CODE https://bit.ly/my-source-ciu SUBSCRIBE FOR MORE C# LESSONS http://bit.ly/mytestedaspnet ▻ Part 1 - N ...Writing your own queries (on the very rare occasions that I need to) help solve this problem. CREATE PROCEDURE [dbo]. [usp_GetFullCustomers] @AccountId bigint AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; SELECT * FROM Customers WHERE AccountId = @AccountId SELECT s.*Seemingly simple query being very slow on Entity Framework So I have a very basic Data Model in my project (targeting .NET 4.0, using EF 5 installed by NuGet, database first), with 2 …I'm using Entity framework 6.1 with Sql server 2008r2. But I have noticed that even a small query ( with only 2-3 records ) need about 25 seconds to execute. This happens …There are many practices to speed up Entity Framework, I will mention some of them Turn off the LazyLoading (EDMX => open the file right click anywhere => properties => Lazy Loading Enabled set it to false ) Use AsNoTracking ().ToList () and when you want to update, use Attach and update object state to EntityState.Modified23-Mar-2021 ... What's A SQL View. For folks who aren't aware, a view is a virtual table based on the result-set of a predefined query. Views allow us ...At a minimum you can speed up the loading of these related details by first extracting your "idDiagnostico" values from the query results and using those to load all of the related child … amplifier ic list Converte First<TSource>(IQueryable<TSource>) il metodo o FirstOrDefault<TSource>(IQueryable<TSource>) gli altri overload sull'origine specificata.Jan 22, 2016 · Well obviously, "EF7" The performance was good "EF6" performance ratio. However, as the test can see, still have to "warm-up", the first query is still very slow (this is only one case of an entity, there are multiple entities when slower). Would that be possible that part of the LINQ turn SQL coding work without time-consuming to cache? Dec 21, 2014 · The first thought we had is that this was slow because of SQL, but checking the SQL Profiler logs it was easy to see that the queries were operating in the nearly immeasurable millisecond range even once the loop starts slowing down. We could see however that the interval between database queries was increasing drastically. So what’s going on here? Well obviously, "EF7" The performance was good "EF6" performance ratio. However, as the test can see, still have to "warm-up", the first query is still very slow (this is only one case of an entity, there are multiple entities when slower). Would that be possible that part of the LINQ turn SQL coding work without time-consuming to cache?22-Mar-2012 ... If you've used Entity Framework for a line-of-business application model, you've suffered a lengthy delay before the first query completes ...C# Entity FrameWork MySQL Slow Queries Count()-mysql. Most engaging questions postgresql. PostgreSQL Grouping error; Selecting top values without limit; Why do Postgres …Entity Framework slow on first query. Archived Forums 1-20 > ... ADO.NET Entity Framework and LINQ to Entities ...Entity Framework slow on first query. Archived Forums 1-20 > ... ADO.NET Entity Framework and LINQ to Entities ... venus star point libra 2022 You can build and execute queries using Entity Framework to fetch the data from the underlying database. EF 6 supports different types of queries which in turn convert into SQL queries for …23-Feb-2021 ... This LINQ query is being executed in split-query mode. The SQL shown is for the first query to be executed. Additional queries may also be ...But if I use Visual Studio 2013 Preview to Debug the exact same application it takes almost 2 minutes BEFORE running the first query: Dim Context = New MyEntities () Dim Query = From I in Context.Itens '' <--- The debug takes 2 minutes in here Dim Item = Query.FirstOrDefault () Is there a way to remove this extra time? ready mix concrete near meFirst, when trying to understand EF performance, we need to know what stages EF operates on in order to actually query the database server with our object query I'm having a serious issue with MySQL and Entity Framework 4.0. I have dropped a Table onto the EF Designer surface, and everything seems OK. However, when I perform a query in the following fashion: I'm having a serious issue with MySQL and Entity Framework 4.0. I have dropped a Table onto the EF Designer surface, and everything seems OK. However, when I perform a query in the following fashion: Writing your own queries (on the very rare occasions that I need to) help solve this problem. CREATE PROCEDURE [dbo]. [usp_GetFullCustomers] @AccountId bigint AS …Feb 14, 2011 · Hi! I'm currently evaluating EF4 as an option to communicate with our database, but are experiencing a slow performance on the first query. After this any other query is fast ... Results: First page load: 40 to 50 seconds. 2nd page load: 0 to 1.5 seconds. That's quite amazing, EF 6.1.X is much faster than EF 6.2. Build and deployed as Release package with debug=false. For test purpose i also uploaded asp.net application without Entity Framework, it takes 8 to 13 seconds to load for first time, and second load takes in ...It may happen sometimes because people buy pathetic slow shared hosting which makes the work of retrieving data from the database very slow. thanks it may exactly be the situation. Because I use a shared db. on a hosting provider. however still problem is problem. why the first query takes 20 sec but subsequent queries takes 1 sec?命名空间: Microsoft.EntityFrameworkCore.Query 程序集: Microsoft.EntityFrameworkCore.Relational.dll 包: Microsoft.EntityFrameworkCore.Relational v3.0.0 you do too much side queries in one query. When you query three sublists of 100 items each, you do not get 300 rows. To get it in one query you create join and get actually 100*100*100 = 1000000 rows. Unless you are sure the frameworks can split it into multiple queries (probably can not), you should query the sublists in separate queries. But if I use Visual Studio 2013 Preview to Debug the exact same application it takes almost 2 minutes BEFORE running the first query: Dim Context = New MyEntities () Dim Query = From I in Context.Itens '' <--- The debug takes 2 minutes in here Dim Item = Query.FirstOrDefault () Is there a way to remove this extra time?You can use LINQ with C# or VB to query different types of data sources such as SQL, XML, In memory objects, etc. As the name suggests, the LINQ-to-Entities queries operate on the …Well obviously, "EF7" The performance was good "EF6" performance ratio. However, as the test can see, still have to "warm-up", the first query is still very slow (this is only one case of an entity, there are multiple entities when slower). Would that be possible that part of the LINQ turn SQL coding work without time-consuming to cache?Run the first query using EF; the SQL statement executes more slowly than any subsequent queries. Get rid of the context and repository Make a fresh context Run the previous query (again the first query is slow and so is the SQL statement) It nearly seems as if EF sends extra information with the first query to slow down the server.Jan 22, 2016 · Well obviously, "EF7" The performance was good "EF6" performance ratio. However, as the test can see, still have to "warm-up", the first query is still very slow (this is only one case of an entity, there are multiple entities when slower). Would that be possible that part of the LINQ turn SQL coding work without time-consuming to cache? The slow query happens every time there is a "first query" in EF. E.g. 1) Run the first query with EF, the SQL statement is slower then any secondary query. 2) Dispose the context/repository. 3) Create a new Context. dungeon master 2 online 06-May-2009 ... I'm going to run that simple query first calling just ADO.NET (bare bones using best practices), Then using LINQ to SQL in the way I've ...2 days ago · We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ... An example query with Entity Framework Here is an example of a slow performing query with Entity Framework. I'm starting at a Customer model and I need to also retrieve data that is related one-to-one with the customer, but more importantly, one-to-many with the customer and to make matters even worse there are further one-to-many of the ...Best coding solution for query Database first create entity framework 6.1.1 model using system.data.sqlite 1.0.93. Home Services Web Development ... This updated entity framework from 6.1 to 6.1.1, and it updated sqlite to 1.0.93. I wanted to update my model from my latest database. I did the steps of 1) Model from Database 2) Select sqlite database 3) Generate.Popular Answer The first Entity Framework Query is always slow because EF compiles your model and generates mapping views in memory. You can pre-generate those mapping views using the EF Power Tools. Theres a documentation for that here in docs.microsoft.com. In order to load those views you need to create a custom DbConfiguration class like this:07-Feb-2022 ... Queries after the first query are handled in expected amount of time (under 1 second depending on query complexity). After searching a little on ...We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ... oneopinion app We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ...Aug 15, 2019 · If you want to speed up Entity Framework, I suggest you could refer to below ways: 1.Turn off the LazyLoading (EDMX => right click the UI => properties => Lazy Loading Enabled set it to false) 2.Split your Edmx into many smaller, only include the ones you need in your page. Best Regards, Brando Monday, September 2, 2019 9:05 AM Question. I'm using EF6 rc1 with Code First strategy, without precompiled views and the problem is: If I compile and run the exe application it takes like 15 seconds to run the first query (that's okay, since I'm still working on the pre-generated views). But if I use Visual Studio 2013 Preview to Debug the exact same application it takes ...User table, the time required for the first query: 1453 millisecond. User table, the time required for the second query: 16 millisecond. Role table, the time required for the first …Add POCO / Entity to DbContext for Custom Query / Procedure Without Creating a Table in Entity Framework Code First. होमपेज; c#; add poco / entity to dbcontext for custom query / procedure without creating a table in entity framework code firstWhat i am struggling with is, when I deploy this on azure. and whenever i make the first call to the api which uses above query or when there is a significant gap of few minutes or 1 hour between two calls, Above process takes a long time to complete .almost 20-25 seconds, The next call is in less than a second.› [साल्व्ड] Entity constructors - Entity framework › [साल्व्ड] How to get rid off "An entity object cannot be referenced by multiple instances of IEntityChangeTracker"? kdp niche research extension We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ...Well obviously, "EF7" The performance was good "EF6" performance ratio. However, as the test can see, still have to "warm-up", the first query is still very slow (this is only one case of an entity, there are multiple entities when slower). Would that be possible that part of the LINQ turn SQL coding work without time-consuming to cache?We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ...01-May-2014 ... The differences between the first and second queries were less extreme for the second test. My suspicion is both frameworks are mapping the ...> that is slow on the first query. Timings was as follows: > > .NET testing application. > - First Query: 29,6 seconds > - Second Query: 3,2 seconds > > SQL Profiler > - First Query: 27 seconds > - Second Query: 3,2 seconds > > SQL Server Query Window > - First Query: 8 seconds > - Second Query: 4 seconds >We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally …The slow query happens every time there is a "first query" in EF. E.g. 1) Run the first query with EF, the SQL statement is slower then any secondary query. 2) Dispose the context/repository. 3) Create a new Context.The EnsureDeleted / EnsureCreated approach used to be very slow (~10 seconds) for a SQL Server database, but since the new SqlClient came out in NET 5 this is much quicker (~ 1.5 seconds), which makes a big difference to how long a test would take to run when using this EnsureDeleted + EnsureCreated version. 3.Seemingly simple query being very slow on Entity Framework So I have a very basic Data Model in my project (targeting .NET 4.0, using EF 5 installed by NuGet, database first), with 2 … bash dynamic case statement Hi! I'm currently evaluating EF4 as an option to communicate with our database, but are experiencing a slow performance on the first query. After this any other query is fast ...An introduction to the DataOps discipline. Learn about DataOps, a framework that aims at resolving common data pain points in today's big data world where speed, quality, and reliability are key. Featured | Article.The first thought we had is that this was slow because of SQL, but checking the SQL Profiler logs it was easy to see that the queries were operating in the nearly immeasurable millisecond range even once the loop starts slowing down. We could see however that the interval between database queries was increasing drastically. So what’s going on here? fsx free download 3 Total cost increases proportional to the number of objects returned by the query. 4 This overhead is not required for EntityClient queries because EntityClient queries return an. Arthur Vickers. November 8th, 2022 2 3. Entity Framework Core (EF Core) 7 is available on NuGet today! EF Core 7 is the successor to EF Core 6, and can be referred ... 03-Aug-2022 ... Lean object-to-database mappers like Dapper have consistently outperformed EF in query performance, but every new release of Microsoft's library ...3 Total cost increases proportional to the number of objects returned by the query. 4 This overhead is not required for EntityClient queries because EntityClient queries return an. Arthur Vickers. November 8th, 2022 2 3. Entity Framework Core (EF Core) 7 is available on NuGet today! EF Core 7 is the successor to EF Core 6, and can be referred ... 10-Feb-2018 ... One of the most frequent complaints that I hear when presenting to DBAs about Entity Framework is that it's “slow” and that “developers ...Entity Framework slow on first query. Archived Forums 1-20 > ADO.NET Entity Framework and LINQ to Entities. ADO.NET Entity Framework and LINQ to Entities ...An example query with Entity Framework Here is an example of a slow performing query with Entity Framework. I'm starting at a Customer model and I need to also retrieve data that is related one-to-one with the customer, but more importantly, one-to-many with the customer and to make matters even worse there are further one-to-many of the ...2 days ago · We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ... taunton drug bust Entity framework slow on first query. I tried but this doesn't wo...3 Total cost increases proportional to the number of objects returned by the query. 4 This overhead is not required for EntityClient queries because EntityClient queries return an. Arthur Vickers. November 8th, 2022 2 3. Entity Framework Core (EF Core) 7 is available on NuGet today! EF Core 7 is the successor to EF Core 6, and can be referred ... So my EDMX has roughly 60-70 tables/stored procs. The first time I load my application after it is published to the server its slow. Once that ...An introduction to the DataOps discipline. Learn about DataOps, a framework that aims at resolving common data pain points in today's big data world where speed, quality, and reliability are key. Featured | Article.Every time we summon an entity or list using EF, the objects are tracked by EF by storing them in memory. Whenever we call db.SaveChanges (), EF determines those changes …Other areas, including performance issues of Entity Framework (relatively slow processing of SaveChanges () and long initialization of Entity Framework on the first query), are out of scope. However, principles of cache invalidation and entity framework performance tips used here are suitable for any ORM, not just Entity Framework.23-Feb-2021 ... Building high performance database queries using Entity Framework Core and AutoMapper – a ... First level of performance tuning – Good LINQ.If our SQL query would look something like: “UPDATE Posts SET ViewCount = ViewCount + 1 WHERE OwnerUserId = 9” to perform an UPDATE on all rows matching a …Apr 18, 2019 · Writing your own queries (on the very rare occasions that I need to) help solve this problem. CREATE PROCEDURE [dbo]. [usp_GetFullCustomers] @AccountId bigint AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; SELECT * FROM Customers WHERE AccountId = @AccountId SELECT s.* An example: string sql = ( (ObjectQuery)context.shSupplierCategory.Where (row => row.Id == 1)).ToTraceString () takes approx 5 secs to generate SELECT [Extent1]. [Id] AS [Id], [Extent1]. [Name] AS [Name], [Extent1]. [LocalizedNameId] AS [LocalizedNameId] FROM [DBA]. [shSupplierCategory] AS [Extent1] WHERE 1 = [Extent1]. [Id] the next callPopular Answer The first Entity Framework Query is always slow because EF compiles your model and generates mapping views in memory. You can pre-generate those mapping views using the EF Power Tools. Theres a documentation for that here in docs.microsoft.com. In order to load those views you need to create a custom DbConfiguration class like this: This still doesn't explain, however, why SQL Profiler displays the quite straightforward INNER JOIN query as taking over 10 seconds, as opposed to the exact same query without the JOIN, …16-Feb-2016 ... Summary · Ignore the wisdom of the newsgroup posts that say “Entity Framework's just slow, nothing you can do”; · Instead, run SQL Server profiler ...Well obviously, "EF7" The performance was good "EF6" performance ratio. However, as the test can see, still have to "warm-up", the first query is still very slow (this is only one case of an entity, there are multiple entities when slower). Would that be possible that part of the LINQ turn SQL coding work without time-consuming to cache?Other areas, including performance issues of Entity Framework (relatively slow processing of SaveChanges () and long initialization of Entity Framework on the first query), are out of scope. However, principles of cache invalidation and entity framework performance tips used here are suitable for any ORM, not just Entity Framework.The slow query happens every time there is a "first query" in EF. E.g. 1) Run the first query with EF, the SQL statement is slower then any secondary query. 2) Dispose the context/repository. 3) Create a new Context.Apr 18, 2019 · Writing your own queries (on the very rare occasions that I need to) help solve this problem. CREATE PROCEDURE [dbo]. [usp_GetFullCustomers] @AccountId bigint AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; SELECT * FROM Customers WHERE AccountId = @AccountId SELECT s.* score:1 catch (DbUpdateException ex) { _context.Entry (order).State = EntityState.Detached; foreach (var orderLine in order.OrderLines) { _context.Entry (orderLine).State = EntityState.Detached; } } Steve Py 20178 Source: stackoverflow.comWell obviously, "EF7" The performance was good "EF6" performance ratio. However, as the test can see, still have to "warm-up", the first query is still very slow (this is only one case of an entity, there are multiple entities when slower). Would that be possible that part of the LINQ turn SQL coding work without time-consuming to cache?We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ...score:1 catch (DbUpdateException ex) { _context.Entry (order).State = EntityState.Detached; foreach (var orderLine in order.OrderLines) { _context.Entry (orderLine).State = EntityState.Detached; } } Steve Py 20178 Source: stackoverflow.com19-Oct-2019 ... DOWNLOAD THE SOURCE CODE https://bit.ly/my-source-ciu SUBSCRIBE FOR MORE C# LESSONS http://bit.ly/mytestedaspnet ▻ Part 1 - N ... gmail for mac 07-Apr-2021 ... The most common issue usually is on the programmer's side: firing the SQL execution on middle-query time, when it's not supposed to get the data ... jobs at mining companies Oct 09, 2010 · The slow query happens every time there is a "first query" in EF. E.g. 1) Run the first query with EF, the SQL statement is slower then any secondary query. 2) Dispose the context/repository. 3) Create a new Context. Apr 18, 2019 · An example query with Entity Framework Here is an example of a slow performing query with Entity Framework. I'm starting at a Customer model and I need to also retrieve data that is related one-to-one with the customer, but more importantly, one-to-many with the customer and to make matters even worse there are further one-to-many of the ... The first time you run this query the server creates an execution plan for this query using values of parameters that were in effect in the first run, but, later on you run the same EF query using …First, when trying to understand EF performance, we need to know what stages EF operates on in order to actually query the database server with our object queryWriting your own queries (on the very rare occasions that I need to) help solve this problem. CREATE PROCEDURE [dbo]. [usp_GetFullCustomers] @AccountId bigint AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; SELECT * FROM Customers WHERE AccountId = @AccountId SELECT s.*The EnsureDeleted / EnsureCreated approach used to be very slow (~10 seconds) for a SQL Server database, but since the new SqlClient came out in NET 5 this is much quicker (~ 1.5 seconds), which makes a big difference to how long a test would take to run when using this EnsureDeleted + EnsureCreated version. 3.An example query with Entity Framework Here is an example of a slow performing query with Entity Framework. I'm starting at a Customer model and I need to also retrieve data that is related one-to-one with the customer, but more importantly, one-to-many with the customer and to make matters even worse there are further one-to-many of the ...A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior.08-Oct-2010 ... Entity Framework - First query slow · Run the first query with EF, the SQL statement is slower then any secondary query · Dispose the context/ ...26-Feb-2021 ... There are several situations where your applications may need to display data by combining two or more tables, sometimes even more than 7-8 ... dragonflight tier list tank Otherwise it needs to be a new service or product that has no real competition. That’s why it’s called disruptive. A startup should ideally be disruptive. If not, you need to have at least identified a weakness in the competitive offering that they cannot easily rectify and exploit that difference. 4 more replies.16-Feb-2016 ... Summary · Ignore the wisdom of the newsgroup posts that say “Entity Framework's just slow, nothing you can do”; · Instead, run SQL Server profiler ...You can use LINQ with C# or VB to query different types of data sources such as SQL, XML, In memory objects, etc. As the name suggests, the LINQ-to-Entities queries operate on the …The first Entity Framework Query is always slow because EF compiles your model and generates mapping views in memory. You can pre-generate those mapping views using the EF …The first Entity Framework Query is always slow because EF compiles your model and generates mapping views in memory. You can pre-generate those mapping views using the EF … mood capcut template 2 days ago · We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ... Sep 21, 2016 · There are many practices to speed up Entity Framework, I will mention some of them. Turn off the LazyLoading (EDMX => open the file right click anywhere => properties => Lazy Loading Enabled set it to false ) Use AsNoTracking().ToList() and when you want to update, use Attach and update object state to EntityState.Modified. Use Indexes on your table > that is slow on the first query. Timings was as follows: > > .NET testing application. > - First Query: 29,6 seconds > - Second Query: 3,2 seconds > > SQL Profiler > - First Query: 27 seconds > - Second Query: 3,2 seconds > > SQL Server Query Window > - First Query: 8 seconds > - Second Query: 4 seconds > scooby doo skateboard game The slow query happens every time there is a "first query" in EF. E.g. 1) Run the first query with EF, the SQL statement is slower then any secondary query. 2) Dispose the …Feb 14, 2011 · An example: string sql = ( (ObjectQuery)context.shSupplierCategory.Where (row => row.Id == 1)).ToTraceString () takes approx 5 secs to generate SELECT [Extent1]. [Id] AS [Id], [Extent1]. [Name] AS [Name], [Extent1]. [LocalizedNameId] AS [LocalizedNameId] FROM [DBA]. [shSupplierCategory] AS [Extent1] WHERE 1 = [Extent1]. [Id] the next call We then noticed queries performing extremely poorly in our Azure web app and I can't tell why. Our web-app memory and CPU are not under strain and our Database generally averages 50% DTU usage with occasional spikes. We had a query that initially ran under 5 seconds to now running 30+ seconds, sometimes into the minutes with the exact same data ... playing for keeps becka mack pdf 17-Oct-2017 ... However, it can also introduce big overhead. If a query executes, and then a lazy-loaded object is requested another database query will execute ...you do too much side queries in one query. When you query three sublists of 100 items each, you do not get 300 rows. To get it in one query you create join and get actually 100*100*100 = 1000000 rows. Unless you are sure the frameworks can split it into multiple queries (probably can not), you should query the sublists in separate queries.› [साल्व्ड] Entity constructors - Entity framework › [साल्व्ड] How to get rid off "An entity object cannot be referenced by multiple instances of IEntityChangeTracker"? you do too much side queries in one query. When you query three sublists of 100 items each, you do not get 300 rows. To get it in one query you create join and get actually 100*100*100 = 1000000 rows. Unless you are sure the frameworks can split it into multiple queries (probably can not), you should query the sublists in separate queries.> that is slow on the first query. Timings was as follows: > > .NET testing application. > - First Query: 29,6 seconds > - Second Query: 3,2 seconds > > SQL Profiler > - First Query: 27 seconds > - Second Query: 3,2 seconds > > SQL Server Query Window > - First Query: 8 seconds > - Second Query: 4 seconds >But if I use Visual Studio 2013 Preview to Debug the exact same application it takes almost 2 minutes BEFORE running the first query: Dim Context = New MyEntities () Dim Query = From … miller county ga police reports Aug 15, 2019 · If you want to speed up Entity Framework, I suggest you could refer to below ways: 1.Turn off the LazyLoading (EDMX => right click the UI => properties => Lazy Loading Enabled set it to false) 2.Split your Edmx into many smaller, only include the ones you need in your page. Best Regards, Brando Monday, September 2, 2019 9:05 AM Feb 14, 2011 · Hi! I'm currently evaluating EF4 as an option to communicate with our database, but are experiencing a slow performance on the first query. After this any other query is fast ... You can use LINQ with C# or VB to query different types of data sources such as SQL, XML, In memory objects, etc. As the name suggests, the LINQ-to-Entities queries operate on the …Entity Framework query slow, but same SQL in SqlQuery is fast I'm seeing some really strange perf related to a very simple query using Entity Framework Code-First with .NET framework version 4. The LINQ2Entities query looks like this:... context.MyTables.Where(m => m.SomeStringProp == stringVar); ...This takes over 3000 milliseconds to execute. gum scripts redm