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Editorial Team
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Asked: 2026-05-28T14:30:24+00:00

I have a problem. My LINQ to SQL queries are pushing data to the

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I have a problem. My LINQ to SQL queries are pushing data to the database at ~1000 rows per second. But this is much too slow for me. The objects are not complicated. CPU usage is <10% and bandwidth is not the bottleneck too.

10% is on client, on server is 0% or max 1% generally not working at all, not traversing indexes etc.

Why 1000/s are slow, i need something around 20000/s – 200000/s to solve my problem in other way i will get more data than i can calculate.

I dont using transaction but LINQ using, when i post for example milion objects new objects to DataContext and run SubmitChanges() then this is inserting in LINQ internal transaction.

I dont use parallel LINQ, i dont have many selects, mostly in this scenario i’m inserting objects and want use all resources i have not only 5% od cpu and 10kb/s of network!

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1 Answer

  1. Editorial Team

    when i post for example milion objects

    Forget it. Linq2sql is not intended for such large batch updates/inserts.

    The problem is that Linq2sql will execute a separate insert (or update) statement for each insert (update). This kind of behaviour is not suitable with such large numbers.

    For inserts you should look into SqlBulkCopy because it is a lot faster (and really order of magnitudes faster).

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