Should I limit SQL Server memory usage?

Question

Memory Management on SQL Server works on the Fill-and-Flush algorithm. The default values do not restrict the memory consumption from growing unless there's a request from the Operating System. The sizing depends on various components of the system—in many cases, setting it between 70% and 80% is a good starting point. 13 мар. 2018 г.

Should SQL Server Set max memory?

Use the default settings to allow SQL Server to change its memory requirements dynamically based on available system resources. It is recommended to set a max server memory as detailed above.

How much memory does my SQL Server actually need?

In our SQL Server Setup Guide, we tell folks to leave at least 4GB to the OS, and I think most sysadmins would consider 2GB to be the bare minimum.

Why does SQL Server use so much memory?

When SQL Server and the operating system are competing for resources, poor performance is an inevitable byproduct. SQL Server's buffer pool is limited by the maximum server memory limit configuration set in the server's configuration (pretty much where it stores the data pages and the procedure cache).

How do I limit SQL Server memory usage?

In Enterprise Manager, right-click on the desired SQL Server instance and click Properties. In the properties dialog box, click the Memory tab. Under the Maximum (MB) slider option, move the slider to the desired maximum value. Click OK to save your changes.

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