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Yes, we have auto update stats ON &nbsp;and also a nightly task to update stats.<br />
<br />
Thanks,
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Yes, we have auto update stats ON  and also a nightly task to update stats.

Thanks,

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Thanks everyone for your inputs
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Hi Experts,<br />
<br />
I have worked on a very huge database system that does not have proper indexing. (SQL Server 2008 Standard). After putting indexes in place, I see that the Avg Disk Queue length reduced to 6 from 16 which is more than 200% improvement. However, avg cpu is down only by 13% from 65% to 52%. I have run perfmon traces for 2 days before and after the changes to note these values. There are no changes done to code (still the same bad coding)<br />
<br />
I want to understand why cpu usage did not reduce to a large extent, any thoughts?<br />
<br />
Thanks,
</div>
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Hi Experts,

I have worked on a very huge database system that does not have proper indexing. (SQL Server 2008 Standard). After putting indexes in place, I see that the Avg Disk Queue length reduced to 6 from 16 which is more than 200% improvement. However, avg cpu is down only by 13% from 65% to 52%. I have run perfmon traces for 2 days before and after the changes to note these values. There are no changes done to code (still the same bad coding)

I want to understand why cpu usage did not reduce to a large extent, any thoughts?

Thanks,

SQL Server Indexing - Disk IO - CPU

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.

Microsoft SQL Server

Microsoft SQL Server 2005 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. It includes support for managing XML data and allows a database server to be exposed over web services using Tabular Data Stream (TDS) packets encapsulated within SOAP (protocol) requests.

Microsoft SQL Server 2005

Microsoft SQL Server 2008 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. Major improvements include the  Always On technologies and support for unstructured data types.