Solved

Insert Statements Load Testing

Posted on 2010-08-16
4
289 Views
Last Modified: 2012-05-10
Experts -

I'm tryng to simulate the user load testing for the following insert statement. The idea is running this in multiple sessions/threads and measuring

the various performance (CPU usage, Transaction per second, IO, etc). This is an interactive application and I'd like to create the load of 5000 or

more users as possbile to simulate the testing. I understand that it depends on the specs on the server computer it runs on of course, but assuming

you buy the best server available for around $10K?
DECLARE @row INT;

DECLARE @string VARCHAR(50), @length INT, @code INT;

SET @row = 0;

WHILE @row < 100000 BEGIN

   SET @row = @row + 1;



   -- Build the random string

   SET @length = ROUND(80*RAND(),0);

   SET @string = '';

   WHILE @length > 0 BEGIN

      SET @length = @length - 1;

      SET @code = ROUND(32*RAND(),0) - 6;

      IF @code BETWEEN 1 AND 26 

         SET @string = @string + CHAR(ASCII('a')+@code-1);

      ELSE

         SET @string = @string + ' ';

      END 





   -- Ready for the record

   SET NOCOUNT ON;

   INSERT INTO [SP].[SMSG].[TMSG VALUES (

     -- @row,

      @string,

      ROUND(2000000*RAND()-1000000,9),

      ROUND(2000000*RAND()-1000000,9),

      GETDATE(),

      CONVERT(DATETIME, ROUND(60000*RAND()-30000,9)),

      null,

      null,

      @string,

      @string,

      null,

      null   )

END

Open in new window

0
Comment
Question by:sventhan
  • 2
4 Comments
 
LVL 13

Accepted Solution

by:
dwkor earned 500 total points
ID: 33447077
I cannot talk about server specs but one thing I noticed - it looks like your table has identity (@row). If you have clustered index defined on that field and expect to have load > a few hundred inserts per second, I would suggest to change clustered index to something else. Otherwise you will have contention because of "hot spots" during insert.
0
 
LVL 7

Expert Comment

by:lundnak
ID: 33447470
Could you restate your question?  I'm unable to understand what you are looking for from the experts.
0
 
LVL 18

Author Comment

by:sventhan
ID: 33447816
Sure.

I Would like to measure the performance metrics during the maximum load of a certain table. To keep it simple just run the same insert stmt again and again (using various threads/users/agents) to the same table till I get 100% CPU usage. What is the maximum capacity the system can handle for just doing a multiple insert to the same table(Daily Partitioned) with clustered index on it?

This is a messaging application and this table is going to grow with the messages. I'm doing the capacity planning.

Thanks,
~sve.

0
 
LVL 18

Author Closing Comment

by:sventhan
ID: 33450998
Thanks for the help.
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

INTRODUCTION: While tying your database objects into builds and your enterprise source control system takes a third-party product (like Visual Studio Database Edition or Red-Gate's SQL Source Control), you can achieve some protection using a sing…
Occasionally there is a need to clean table columns, especially if you have inherited legacy data. There are obviously many ways to accomplish that, including elaborate UPDATE queries with anywhere from one to numerous REPLACE functions (even within…
This video discusses moving either the default database or any database to a new volume.
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

708 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

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now