sync

TPDT-268 - ACP in task sequence/1_Configure_InstanceMemory.sql

@@ -0,0 +1,57 @@
+/* 23.06.2021 RTC TFS 65413 Optimize RAM configuration */
+EXEC sys.sp_configure N'show advanced options', N'1'  RECONFIGURE WITH OVERRIDE
+GO
+EXEC sys.sp_configure N'min server memory (MB)', N'1024'
+GO
+
+DECLARE @maxMem INT;
+DECLARE @totSysMemKb INT;
+DECLARE @NumOfCores INT; 
+DECLARE @NumOfProcessors INT; 
+DECLARE @NumOfSQLThreads INT; 
+DECLARE @isX64 BIT = 1;
+DECLARE @ThreadStackSize INT; 
+DECLARE @osReserved INT; 
+DECLARE @newMaxMem INT; 
+DECLARE @appReserved INT = 0*1024*1024; --memory reserved for other apps on the server in Kb
+
+SELECT @totSysMemKb = [total_physical_memory_kb]
+FROM [sys].[dm_os_sys_memory];
+
+SELECT @NumOfCores = [cpu_count], @NumOfProcessors = [cpu_count] / [hyperthread_ratio]
+FROM [sys].[dm_os_sys_info];
+
+SELECT @isX64 = CHARINDEX('64-bit',CAST(SERVERPROPERTY('Edition') AS VARCHAR(MAX)));
+
+SELECT @ThreadStackSize = CASE WHEN @isX64=1 THEN 4096 ELSE 2048 END;
+
+SELECT @NumOfSQLThreads = 256 + (@NumOfProcessors - 4) * 8 * (CASE WHEN @NumOfProcessors >4 THEN @NumOfProcessors ELSE 0 END);
+
+
+select @NumOfCores = 1, @NumOfProcessors = 8
+
+SELECT @osReserved = CASE WHEN @totSysMemKb < (20*1024*1024) THEN @totSysMemKb * 0.2 ELSE @totSysMemKb * 0.125 END;
+
+PRINT'
+@totSysMemKb:       '+COALESCE(CAST(@totSysMemKb AS VARCHAR(MAX)),'null')+'
+@NumOfCores:        '+COALESCE(CAST(@NumOfCores AS VARCHAR(MAX)),'null')+'
+@NumOfProcessors:   '+COALESCE(CAST(@NumOfProcessors AS VARCHAR(MAX)),'null')+'
+@NumOfSQLThreads:   '+COALESCE(CAST(@NumOfSQLThreads AS VARCHAR(MAX)),'null')+'
+@isX64:             '+COALESCE(CAST(@isX64 AS VARCHAR(MAX)),'null')+'
+@ThreadStackSize:   '+COALESCE(CAST(@ThreadStackSize AS VARCHAR(MAX)),'null')+'
+@osReserved:        '+COALESCE(CAST(@osReserved AS VARCHAR(MAX)),'null')+'
+@appReserved:       '+COALESCE(CAST(@appReserved AS VARCHAR(MAX)),'null')+'
+';
+SELECT @newMaxMem = @totSysMemKb - (@NumOfSQLThreads * @ThreadStackSize) - ((1* 1024 * 1024) * CEILING(@NumOfCores/4)) - @osReserved - @appReserved;
+
+SELECT @MaxMem = @newMaxMem / 1024
+
+EXEC sys.sp_configure N'max server memory (MB)', @maxMem
+RECONFIGURE WITH OVERRIDE
+EXEC sys.sp_configure N'show advanced options', N'0'  RECONFIGURE WITH OVERRIDE
+
+UPDATE HCITools.dbo.HCI_PARAMS
+SET HCIP_value = @MaxMem
+WHERE HCIP_key = 'MAXSRVMEM'
+
+GO