Use of the SQL Server Agent

Hello

Lack of VMWare VirtualCenter Server 2.5.0.64207 on a Windows 2003 R2 SP2, SQL Server 2005 System. It is the only significant application on the system, and VirtualCenterDB is the only database.

We see that the system is running very slowly, both regarding the response time in the Console of the Infrastructure of VMWare and the response time for all other programs that you happen to run. For example, the MMC administration tools take a long time to start or respond to clicks.

PerfMon shows fairly low CPU usage, but the queue of average drive about 170.

However, the problem disappears if we stop the SQL Server Agent service. The average disk queue goes down to about 2.

I don't want to always leave the SQL Server Agent is turned off, because it is necessary to perform periodic maintenance. Is there a way to tell why the readers of SQL Server Agent use so much disk space?  Given that VirtualCenterDB is our unique database, I suspect that the problem is specific to VMWare.

Thanks in advance for your suggestions.

These jobs move data from system of VPX_HIST_STAT1 to VPX_HIST_STAT2 then VPX_HIST_STAT3 then VPX_HIST_STAT4 and finally remove the data from your database.   These tables to the expectations of the performance data for your hosts and virtual machines and jobs here correspond to the data of the basic performance levels than your game in the VI client when connected to your vCenter server.  It is important to keep these tasks to make sure that your weekly, monthly and annual data are properly maintained.

You have a database maintenance task that rebuilt the index?  If this isn't the case, then it is perhaps probably caused performance issues.  Without up-to-date indexes, SQL Server will be compelled to resort to analysis of tables when looking for data that can significantly increase the disk i/o.

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