[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

SQL CLR Slow at first start

Posted on 2010-09-02
3
Medium Priority
?
938 Views
Last Modified: 2012-05-10
When I execute and SQL CLR store procedure, the first time .... it is really slow and then faster the second time. Is there a way to maintain this fast without having to trigger the storeprocedure every 1 minute?
0
Comment
Question by:ismamicrosolutions
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 25

Expert Comment

by:DBAduck - Ben Miller
ID: 33593447
The reason is because the CLR is Common Language Runtime and is hosted by SQL Server.  It still follows the model of CLR applications in that it is compiled down to IL (Intermediate Language) and in order to execute must use a process called JIT (Just in Time) compiling to get to bytecode or executable code.  This is done once at the beginning of the first execution and from then on uses the bytecode produced.  

So in any CLR or .NET language, you will incur the cost of the JIT on the first invocation.  This is what you are seeing.

Also note that this only happens when the AppDomain is recycled, which is governed by the CLR and I am not sure how often that happens in SQL.
0
 

Author Comment

by:ismamicrosolutions
ID: 33593467
But is there a way to bypass just in time or insert it as a more native language so no JIT need?
0
 
LVL 25

Accepted Solution

by:
DBAduck - Ben Miller earned 2000 total points
ID: 33593478
Not that I am aware of.  You will load the assembly with CREATE ASSEMBLY and in the validation it checks the MSIL.

So I am not aware of a way to create an assembly that has been NGEN'd to bytecode.  It will always JIT.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article I will describe the Detach & Attach method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question