Update sp_PerfCheck.sql

Author: erikdarlingdata

sp_PerfCheck/sp_PerfCheck.sql

@@ -247,6 +247,10 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
         /* Other configuration variables */
         @priority_boost bit,
         @lightweight_pooling bit,
+        @affinity_mask bigint,
+        @affinity_io_mask bigint,
+        @affinity64_mask bigint,
+        @affinity64_io_mask bigint,
         /* TempDB configuration variables */
         @tempdb_data_file_count integer,
         @tempdb_log_file_count integer,
@@ -2960,6 +2964,25 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
         CROSS JOIN sys.configurations AS c2
         WHERE c1.name = N'priority boost'
         AND   c2.name = N'lightweight pooling';
+        
+        /* Collect affinity mask settings */
+        SELECT 
+            @affinity_mask = 
+                CONVERT(bigint, c1.value_in_use),
+            @affinity_io_mask = 
+                CONVERT(bigint, c2.value_in_use),
+            @affinity64_mask = 
+                CONVERT(bigint, c3.value_in_use),
+            @affinity64_io_mask = 
+                CONVERT(bigint, c4.value_in_use)
+        FROM sys.configurations AS c1
+        CROSS JOIN sys.configurations AS c2
+        CROSS JOIN sys.configurations AS c3
+        CROSS JOIN sys.configurations AS c4
+        WHERE c1.name = N'affinity mask'
+        AND   c2.name = N'affinity I/O mask'
+        AND   c3.name = N'affinity64 mask'
+        AND   c4.name = N'affinity64 I/O mask';
     END;
 
     /*
@@ -3498,6 +3521,110 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
             );
         END;
 
+        /* Affinity Mask check */
+        IF @affinity_mask <> 0
+        BEGIN
+            INSERT INTO
+                #results
+            (
+                check_id,
+                priority,
+                category,
+                finding,
+                details,
+                url
+            )
+            VALUES
+            (
+                1008,
+                50, /* Medium priority */
+                N'Server Configuration',
+                N'Affinity Mask Configured',
+                N'Affinity mask has been manually configured to ' +
+                CONVERT(nvarchar(20), @affinity_mask) +
+                N'. This can limit SQL Server CPU usage and should only be used when necessary for specific CPU binding scenarios.',
+                N'https://erikdarling.com/sp_PerfCheck/#AffinityMask'
+            );
+        END;
+
+        /* Affinity I/O Mask check */
+        IF @affinity_io_mask <> 0
+        BEGIN
+            INSERT INTO
+                #results
+            (
+                check_id,
+                priority,
+                category,
+                finding,
+                details,
+                url
+            )
+            VALUES
+            (
+                1009,
+                50, /* Medium priority */
+                N'Server Configuration',
+                N'Affinity I/O Mask Configured',
+                N'Affinity I/O mask has been manually configured to ' +
+                CONVERT(nvarchar(20), @affinity_io_mask) +
+                N'. This binds I/O completion to specific CPUs and should only be used for specialized workloads.',
+                N'https://erikdarling.com/sp_PerfCheck/#AffinityMask'
+            );
+        END;
+
+        /* Affinity64 Mask check */
+        IF @affinity64_mask <> 0
+        BEGIN
+            INSERT INTO
+                #results
+            (
+                check_id,
+                priority,
+                category,
+                finding,
+                details,
+                url
+            )
+            VALUES
+            (
+                1010,
+                50, /* Medium priority */
+                N'Server Configuration',
+                N'Affinity64 Mask Configured',
+                N'Affinity64 mask has been manually configured to ' +
+                CONVERT(nvarchar(20), @affinity64_mask) +
+                N'. This can limit SQL Server CPU usage on high-CPU systems and should be carefully evaluated.',
+                N'https://erikdarling.com/sp_PerfCheck/#AffinityMask'
+            );
+        END;
+
+        /* Affinity64 I/O Mask check */
+        IF @affinity64_io_mask <> 0
+        BEGIN
+            INSERT INTO
+                #results
+            (
+                check_id,
+                priority,
+                category,
+                finding,
+                details,
+                url
+            )
+            VALUES
+            (
+                1011,
+                50, /* Medium priority */
+                N'Server Configuration',
+                N'Affinity64 I/O Mask Configured',
+                N'Affinity64 I/O mask has been manually configured to ' +
+                CONVERT(nvarchar(20), @affinity64_io_mask) +
+                N'. This binds I/O completion on high-CPU systems and should be carefully evaluated.',
+                N'https://erikdarling.com/sp_PerfCheck/#AffinityMask'
+            );
+        END;
+
         /* Check for value_in_use <> running_value */
         INSERT INTO
             #results