MS SQL Development
 
Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
User Name:
Password:
Remember me

The Shed is going Social! Join us on FaceBook and Twitter and chime in on the conversation.

Go Back   Dev Shed ForumsDatabasesMS SQL Development

Reply
Add This Thread To:
  Del.icio.us   Digg   Google   Spurl   Blink   Furl   Simpy   Y! MyWeb 
Thread Tools Search this Thread Rate Thread Display Modes
 
Unread Dev Shed Forums Sponsor:
  #1  
Old December 5th, 2003, 04:49 PM
gator93 gator93 is offline
Junior Member
Dev Shed Newbie (0 - 499 posts)
 
Join Date: Dec 2003
Posts: 1 gator93 User rank is Just a Lowly Private (1 - 20 Reputation Level) 
Time spent in forums: < 1 sec
Reputation Power: 0
sql queries taking longer

I have a survey site that allows people to sign up for an account and create their own surveys and collect data on my server.

Before I had any customers, the speed of retrieving survey data was very fast. But, it is becoming progressively slower to retrieve data the more customer accounts there are. Many accounts have surveys with 20 or 30 questions and with 100+ responses.

I even did a parallel test with the same survey and retrieved survey data from one database that had just one customer account and then one from my current database with 1000+ customer accounts. In some cases it took 3 minutes on the larger database to pull survey data that could be pulled in just a few seconds with the smaller database.

First of all, why is this happening? Second of all, I want to determine how to optimize my site (which is written in .net (.aspx) and uses sql 2000 so it will run just as fast with a thousand accounts as it would with one account.

Any thoughts on what could be going on and what I could do to fix this? Thanks.

Andrew

Reply With Quote
  #2  
Old December 8th, 2003, 02:13 PM
Scorpions4ever's Avatar
Scorpions4ever Scorpions4ever is offline
Banned ;)
Dev Shed God 9th Plane (9000 - 9499 posts)
 
Join Date: Nov 2001
Location: Woodland Hills, Los Angeles County, California, USA
Posts: 9,382 Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level)Scorpions4ever User rank is General 46th Grade (Above 100000 Reputation Level) 
Time spent in forums: 1 Month 4 Weeks 1 Day 20 h 31 m 48 sec
Reputation Power: 4080
U probably need a few indexes added to the tables. Do you have access to Query Analyzer? If so, do the following:
(a) Enter the query that you want to profile.
(b) Type Ctrl-L to display the Estimated Execution Plan (or hit the speed button for this -- should be to the right of the database selection combo box).
(c) In the Estimated Execution Plan diagram, determine which parts of the query take the most time and add indexes as needed.
__________________
Up the Irons
What Would Jimi Do? Smash amps. Burn guitar. Take the groupies home.
"Death Before Dishonour, my Friends!!" - Bruce D ickinson, Iron Maiden Aug 20, 2005 @ OzzFest
Down with Sharon Osbourne

Reply With Quote
Reply

Viewing: Dev Shed ForumsDatabasesMS SQL Development > sql queries taking longer

Developer Shed Advertisers and Affiliates



Thread Tools  Search this Thread 
Search this Thread:

Advanced Search
Display Modes  Rate This Thread 
Rate This Thread:


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox
Forum Jump

Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
  
 


Powered by: vBulletin Version 3.0.5
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd.

© 2003-2013 by Developer Shed. All rights reserved. DS Cluster - Follow our Sitemap