Ef savechanges slow
WebNov 19, 2024 · According to Admir's answer, I send every 20 records with one INSERT statement and fortunately ExecuteSqlCommand takes only 6 seconds. BUT SaveChanges () takes about 2 minutes! How can I overcome this problem? c# sql-server entity-framework entity-framework-6 sql-insert Share Follow edited Nov 19, 2024 at 21:40 … WebDo SaveChanges () in packages of 100 inserts... or you can try with packages of 1000 items and see the changes in performance. Since during all this inserts, the context is the same and it is getting bigger, you can rebuild your context object every 1000 inserts. var yourContext = new YourContext (); I think this is the big gain.
Ef savechanges slow
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WebNov 7, 2016 · 2 Answers Sorted by: 3 It might not be the SaveChanges call - the first time you make any call to the database in EF, it has to do some initial code generation from the metadata. You can pre-generate this though at compile-time: http://msdn.microsoft.com/en-us/library/bb896240.aspx I would be surprised if that's the only problem, but it might help. WebOct 5, 2016 · With each change - If you want each save to run in its own transaction and be independent of other changes then run the save in the loop or after you make a change. Note that if there is a failure later in the code then the changes that have already occurred are persisted and will not be rolled back. This also has a higher performance cost as ...
WebFeb 21, 2024 · For HUGE performance gains, Entity Framework makes one database round-trip for each entity to insert/update/delete. So if you want to save (add, modify or remove) 10,000 entities, 10,000 database round trip will be required which is INSANELY slow. To use BulkSaveChanges, you will need to use a third-party library. Google … WebApr 29, 2024 · The expectation is that the reuse of the same DbContext instance would be better for performance, but in fact it causes a pretty severe degradation. It would seem …
WebJan 21, 2014 · It is fast when you process hundreds of records. Then when we move to 100k records, entity.saveChanges is very very slow. around 1-3 seconds per record. Then we … WebJun 14, 2013 · Ok, so the reason debug mode was exceptionally slow was because Visual Studio's Intellitrace was recording each ADO.NET event ( all 20, 000 of them ) generated by Entity Framework. So Tools-> Options -> IntelliTrace and Uncheck "Enable IntelliTrace" fixed the issue. Or one can also just filter out the ADO.NET events by going to Tools …
WebJan 30, 2024 · It fixes the part that's slow in the Application. However, the SaveChanges still take a lot of time because one database round-trip is made for every entity you save. So if you have 10k entities to insert, 10,000 database round-trip will be made which is INSANELY slow. Disclaimer: I'm the owner of Entity Framework Extensions
WebNov 23, 2015 · There are two names in the changedProperties list, and EF correctly generated an update statement that updates just these two properties. This method is called repeatedly (to process a collection of data items) and takes about 15-20 seconds to complete. If we replace the method above with the following, execution time drops to 3-4 … dc super hero girls thiccWebMay 26, 2024 · When we call “SaveChanges” method, Entity Framework “magically” knows which queries need to run in order to perform the required actions on the DB, and save all the changes we did in the ... d. c. superhero girls toyWebJun 4, 2016 · Also, you call the SaveChanges method every iteration in your loop. This means you make a call to your DB every iteration to persist that entity and is intensive and time consuming. Place that line of code outside your loop. foreach (var taskCode in taskCodes) { //logic db.TaskCodes.Add (newTaskCode); } db.SaveChanges (); gehl r165 full assembly doorWebJan 19, 2024 · Solution 1. Turn off change tracking before you perform your inserts. This will improve your performance significantly (magnitudes of order). Putting SaveChanges () outside your loop will help as well, but … dc superhero girls star sapphireWebTo set up relationships between entities in different DbContext instances and schemas, you can follow these steps: Define the entity classes in each DbContext instance. Configure the mapping between the entities and the database tables in each context. In EF, you can use the OnModelCreating method to configure the mapping between the entities ... dc super hero girls transforming school busWebJun 15, 2024 · You may want to run performance profiler (part of VS) to see which functions are the ones that run slowly. If the saving bit is the problematic one there is also another configuration that you can set _dbContext.Configuration.ValidateOnSaveEnabled = false (it will be validated on SQL side anyway, also if you provide there always correct data … dc super hero girls teen titans go crossoverdc superhero girls the mario