473,839 Members | 1,461 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Help with SQL 2005 performance problems.


I was wondering if anyone could shed any light on performance problems
we are having with sql 2005. We have 3 boxes which are all 64bit
itanium boxes (4 CPU) connected to a 145 spindle SAN using a 2gb FC
card. All 3 servers also have identical builds of windows 2003 sp1.

The performance on the 2005 boxes has always seemed to be worse than
the 2000 box for some reason. to checkout the san performance i ran
sqlio and when the box is quite ran a test using the normal io size.
The results were identical on all 3 servers, MB/Sec was about
140-160mb and latency was about 7-8 secs.

So the SAN configuration looks idenitical. Now if i run a table scan
from the sql 2000 machine and monitor the perfromance counters, the
latency on the scan is about 30ms and pulls back data at about 100mb/
sec. On the two SQL2005 machines I run the identical query (As the
databases are identical, sizes etc) the latency shoots upto 300-400ms
and MB/Sec drops to 20mb/sec.

Now i am confused, I've proved the SAN is running idenitcal by using
SQLIO, indexes etc have been taken out of the equation as i'm running
a table scan anyway to see the throughput and latency.

I did think that maybe it was because in some strange way the sql2005
databases were set to SQL 2000 compatibility but i disproved this by
creating the identical table in a new comp lev 90 database and setting
the page checksum setting. But the results were still the same latency/

I've done this test four or five times so it doesn't look like there
is any other external san traffic or bottlenecks on there that are
having an effect. It also seems strange that its the same on the two
sql2005 machines.

I had started to think that maybe the disk is fragmented at the OS
level but on both sql 2005 it would seem a bit of a long shot that
they would both be fragmented and not the sql 2000 one. Also the Vdisk
is 1.5 TB so fragmenting this at the O/S level will take days.

Is there anything else that i'm missing at the SQL2005 level that i
need to check to see why latency seems to be so much slower on the SQL
2006 environments?


Dec 12 '07 #1
0 1542

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

by: Jeff | last post by:
Hi, The following is a representative comment from the ACT! User Forum regarding their newest version, 2005. "I didn't say the product was fast enough... I suspect most of those issues are related to .Net and if so, won't be able to be fixed till the version after MS releases .Net V2"
by: baustin75 | last post by:
Posted: Mon Oct 03, 2005 1:41 pm Post subject: cannot mail() in ie only when debugging in php designer 2005 -------------------------------------------------------------------------------- Hello, I have a very simple problem but cannot seem to figure it out. I have a very simple php script that sends a test email to myself. When I debug it in PHP designer, it works with no problems, I get the test email. If
by: Xu, Wei | last post by:
Hi, I have wrote the following sql sentence.Do you have comments to improve the performance.I have created all the indexed. But it's still very slow.Thanks The primary key is proj_ID and Task_UID. SELECT PR.PROJ_NAME AS PRName, PR.PROJ_ID As PRProjID, PR.TASK_UID As PRTaskUID, 'Dev' AS GroupType, Feat.PROJ_ID As FeatProjID, Feat.TASK_UID As FeatTaskUID, Feat.FeatureID AS FeatureID,
by: mrcraze | last post by:
Hi Everyone! We are using a cursor for paging results in SQL server, mainly due to the performance gains achieved when working with large results sets. We have found this to be of great benefit when working with SQL Server 2000, but have run into major problems when using it on SQL Server 2005. The query goes like this:
by: rn5a | last post by:
This is the second time I am asking this question in this newsgroup since I haven't got a solution or response from anyone in my previous post & I need to resolve this issue desperately. Sorry for the double post but I just didn't have any other option other than re-posting the same question in this newsgroup. Consider the following code in a VB class file: Namespace LoginUserFetchDB Public Class ZForZebra : Inherits SoapHeader
by: Jay | last post by:
I have a multi threaded VB.NET application (4 threads) that I use to send text messages to many, many employees via system.timer at a 5 second interval. Basically, I look in a SQL table (queue) to determine who needs to receive the text message then send the message to the address. Only problem is, the employee may receive up to 4 of the same messages because each thread gets the recors then sends the message. I need somehow to prevent...
by: HC | last post by:
Hello, all, I started out thinking my problems were elsewhere but as I have worked through this I have isolated my problem, currently, as a difference between MSDE and SQL Express 2005 (I'll just call it Express for simplicity). I have, to try to simplify things, put the exact same DB on two systems, one running MSDE and one running Express. Both have 2 Ghz processors (one Intel, one AMD), both have a decent amount of RAM (Intel system...
by: Bit Byte | last post by:
I am new to web development - but I am confused with the 2 (largely incompatable) development choices available. I dont really want to invest time learning one, only to have iit abandoned by MS further down the line, or to discover later that it was the "poorer cousin". Which platform should I invest my time in learning and why ?
by: Marco | last post by:
Hi everyone. I've been trying to move some small applications written in vb.net 2003 to vb.net 2005 express just for testing purposes. I have noticed so far that the applications seem to run much slower in the 2005 version. Especially when it comes to nested loops. I haven't done much testing so it might just be this one computer but I was curious to know if anyone else has experienced these kind of problems when moving to the 2005...
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.