Fabiano CPU Test

Fabiano Master Fuckered CPU Test

CPU/FabianoCpuTest.sql

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+USE tempdb
+GO
+
+-- Garantir que ha memória suficiente
+
+
+-- Gerar uma tabela com a massa de dados suficiente pro teste e estatíticas manipuladas pra enganar o SQL e ele gerar paralelismo.
+	IF OBJECT_ID('#TabTest1') IS NOT NULL
+	   DROP TABLE #TabTest1;
+	CREATE TABLE #TabTest1(Col1 CHAR(500));
+	INSERT INTO #TabTest1
+	SELECT TOP 20000000 --> --> Você pode ajustar a quantidade de linhas conforme o ambiente. Isso impacta na memoria requerida.
+		   CONVERT(CHAR(100), 'Test, fixed data to be used on test') AS Col1
+	FROM master.dbo.sysobjects A,
+		 master.dbo.sysobjects B,
+		 master.dbo.sysobjects C,
+		 master.dbo.sysobjects D
+	OPTION (MAXDOP 1);
+	GO
+	UPDATE STATISTICS #TabTest1 WITH ROWCOUNT = 100000, PAGECOUNT = 10000
+
+-- Garantir que toda a tabela vai estar em memória.
+SELECT COUNT(*) FROM #TabTest1
+
+
+SET STATISTICS IO, TIME ON
+GO
+
+	-- Ajustar o maxdop de 2 em 2 e ir comparando co o outro
+	print 'MAXDOP 1'
+	SELECT TOP 100 * FROM #TabTest1
+	ORDER BY Col1
+	OPTION (MAXDOP 1)
+
+	print 'MAXDOP 2'
+	SELECT TOP 100 * FROM #TabTest1
+	ORDER BY Col1
+	OPTION (MAXDOP 2)
+
+	print 'MAXDOP 4'
+	SELECT TOP 100 * FROM #TabTest1
+	ORDER BY Col1
+	OPTION (MAXDOP 4)
+
+SET STATISTICS IO, TIME OFF
+GO