LINQ to SQL : Too much CPU Usage: What happens when there are multiple users.

Posted by soldieraman on Stack Overflow See other posts from Stack Overflow or by soldieraman
Published on 2010-05-01T07:18:24Z Indexed on 2010/05/01 7:27 UTC
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linq-to-sql

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.NET

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cpu

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sql-server-2005

I am using LINQ to SQL and seeing my CPU Usage sky rocketting. See below screenshot. I have three questions

What can I do to reduce this CPU Usage. I have done profiling and basically removed everything. Will making every LINQ to SQL statement into a compiled query help?
I also find that even with compiled queries simple statements like ByID() can take 3 milliseconds on a server with 3.25GB RAM 3.17GHz - this will just become slower on a less powerful computer. Or will the compiled query get faster the more it is used?
The CPU Usage (on the local server goes to 12-15%) for a single user will this multiply with the number of users accessing the server - when the application is put on a live server. i.e. 2 users at a time will mean 15*2 = 30% CPU Usage. If this is the case is my application limited to maximum 4-5 users at a time then. Or doesnt LINQ to SQL .net share some CPU usage.

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