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Microsoft® SQL Server 2008 R2 Unleashed
book

Microsoft® SQL Server 2008 R2 Unleashed

by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
September 2010
Intermediate to advanced content levelIntermediate to advanced
1704 pages
111h 8m
English
Sams
Content preview from Microsoft® SQL Server 2008 R2 Unleashed

affinity mask

Type: Advanced option

Default value: 0

When a server is experiencing a heavy load because other applications are running on the same server, it might be desirable to bind thread affinity to a processor.

affinity mask is a bitmapped field that provides SQL Server threads an affinity to processors. This is typically used in conjunction with the affinity I/O mask option just described. Starting from the least-significant digit, each bit that is set to 1 represents the processor on which SQL Server will spawn its threads. Processors are numbered from 0 to 7. An example of the bitmask values for the first seven processors of an eight-processor system follows (with decimal values shown in parentheses):

You usually leave the eighth processor ...

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Publisher Resources

ISBN: 9780768696585Purchase book