Standard performance counters (RAM, CPU) tend to show low load.
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Moreover, I should also point out that performance counters that can be monitored by the Windows Server Performance Monitor are also created when installing SQL Server.Īs expected, the relevant application takes 10GB of data and generates an additional 20GB. This is sensible otherwise, as it prevents repeat loading of data from storage when it is accessed. It is important to remember when configuring the maximum permitted RAM for SQL Server that SQL Server will reserve the RAM, even when it is not currently in use.
But SQL Server still needed 7GB once a month. The maximum permitted RAM was reduced from 7GB to 5GB, resolving the issue in the short term. It meant that only 1GB was available for the operating system and Reporting Services, and this was what caused the high load on the paging file when loading Reporting Services. It was needed for a monthly import process, reserved and therefore not released. This was caused by the 7GB limit on RAM assigned to SQL Server. Only parallel installation of SQL Server reporting services is not recommended.īut a glance at the paging file (Paging File%Usage) did reveal a lurking issue. Nothing so far indicated performance problems. SQL Server and Reporting Services installed.CPU load negligible (Processor%ProcessorTime).4GB RAM available (MemoryAvailable Mbytes) All the same, a database administrator would be poorly advised to create database indexes without consulting the application vendor, as they can certainly create additional problems, for instance in bulk insert operations.Ī quick rummage through the environment using the Performance Monitor (matching counters in brackets) revealed: This means that unmaintained indexes are among the principal causes for performance problems. SummaryĪlthough index maintenance is part of the day-to-day business of a database administrator, in many cases it is not performed. But it is important to remember in this respect that this configuration option is universally applied to the entire instance and hence will be used for all databases. Modifying the Standard Fill Factor for indexes can also provide a remedy in individual cases. I advise my customers to use and adapt the solution by Ola Hallengren. In-house or otherwise available script solutions present another option. For index rebuild and index reorganize, SQL Server delivers a maintenance plan, which unfortunately is almost impossible to configure. This can reveal that a maintenance plan must be created or executed more frequently if possible. In cases in which indexes are shown at this point, it is necessary to review whether maintenance plans for their upkeep exist and, if they do, how often they are performed.
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