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11.12.2007 at 07:25AM PST, ID: 22954664
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Performance issues with SQL Server

Asked by jschnei555 in MS SQL Server, Storage Technology

Tags: sql, server, 2000, performance

We have a Dell 2650 with a Dell PERC 3/Di controller (SCSI U320) running SQL Server 2000.  It has a split backplane with one 36GB RAID 1 array and one 73GB RAID 5 Array.  The log file is on the RAID 1 drive and the data file is on the RAID 5 drive.

We've recently begun running into performance issues.  The symptoms are queries taking much longer to execute, timeouts, and the disk queue for the data drive getting pegged out at 100% for long periods of time (1-3 mins.).  We used HD Tune and found an average transfer rate of 29.5 MB/s, access time of 8.2ms and a burst rate of 49.3 MB/s.

We have defragmented both the file system as well as SQL Server, with the scan density approaching 100% (DBCC Showcontig).  Nevertheless, a simple "SELECT COUNT(*) FROM SOP30300" (GP table with over 10M records) takes over 20 seconds, whereas just a few months ago it would take less than 5 seconds.  

Shouldn't SQL Server use the system catalog for that metadata?  Even if it does a scan of the index, it is hard to believe it should take that long.  

Any advice or suggestions would be greatly appreciated.Start Free Trial
[+][-]11.12.2007 at 07:45AM PST, ID: 20264749

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[+][-]11.12.2007 at 07:50AM PST, ID: 20264783

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[+][-]11.12.2007 at 08:33AM PST, ID: 20265157

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[+][-]11.12.2007 at 08:46AM PST, ID: 20265286

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[+][-]11.12.2007 at 09:01AM PST, ID: 20265385

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[+][-]11.12.2007 at 09:12AM PST, ID: 20265480

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[+][-]11.12.2007 at 09:49AM PST, ID: 20265765

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[+][-]11.12.2007 at 11:33AM PST, ID: 20266510

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[+][-]11.12.2007 at 03:17PM PST, ID: 20268322

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About this solution

Zones: MS SQL Server, Storage Technology
Tags: sql, server, 2000, performance
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Solution Provided By: pgm554
Participating Experts: 2
Solution Grade: C
 
 
[+][-]11.12.2007 at 03:27PM PST, ID: 20268403

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[+][-]11.12.2007 at 03:51PM PST, ID: 20268561

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