Introducing
SQL Server 2008 Resource Governor
Kiki Rizki NoviandiSQL Server MVP
Blogs : Geeks.netindonesia.net/blogs/kikiEmail : [email protected]
Session Objectives And Agenda
What Resource Governor is
Scenarios covered
Limitations in scope and scenarios
Concepts and details
CPU Demo
Feedback, Q&A
All Server Resources
Overall Picture: SQL Server 2005
Call routing Admin Ad-hoc Reports Marketing
Workloads
Where Resource Governor Can Help
Run-away query scenarioPrevent or minimize possibility if possible
Predictable concurrent execution of different-size workloads
Provide mission critical workloads resources they needLimit known large workloads from abusing resources
Workload prioritization
Resource Governor Goals
Ability to differentiate workloads
Ability to monitor resource usage per group
Limit controls to allow throttled execution or prevent/minimize probability of “run-aways”
Realize user preference on what is important
Overall Picture: SQL Server 2008
Pool 1 Pool 2
Call routing Admin Ad-hoc Reports Marketing
Workloads,
Batch controls
“Part” of the
server,
Aggregate
resource
controls
Resource Governor Limitations
Database Engine onlyAnalysis Services, Reporting Services, etc. are covered as “regular” applications to SQL Server database engine
Single instance onlyEach instance controlled individually
Can be combined with Windows Server Resource Manager (WSRM)
Controls for CPU bandwidth and MemoryMemory: anything that goes through Single Page Allocator SOS API
No I/O for the next release
Resource Governor in SQL MS
Catalog view & Dynamic Management
There are three new Catalog Views and three new Dynamic Management Views introduced for Resource Governor.
sys.resource_governor_configuration - used to display the Resource Governor configuration as stored in metadata.
sys.resource_governor_resource_pools - used to display resource pool configuration as stored in metadata.
sys.resource_governor_workload_groups - used to display workload group configuration as stored in metadata.
sys.dm_resource_governor_configuration - used to get the current in-memory configuration state of Resource Governor
sys.dm_resource_governor_resource_pools - used to get the current resource pool state, the current configuration of resource pools, and resource pool statistics.
sys.dm_resource_governor_workload_groups - used to get the workload group statistics and the current in-memory configuration of the workload group.
Demo: CPU Bandwidth and Importance controls
Demo : Setting up RG
USE master;
GO
-- Examine the current configuration
SELECT * FROM sys.dm_resource_governor_configuration;
GO
--Define two resource pools, one with 10% CPU max, and the other with 90%
CREATE RESOURCE POOL MarketingPool
WITH (MAX_CPU_PERCENT = 10);
GO
CREATE RESOURCE POOL DevelopmentPool
WITH (MAX_CPU_PERCENT = 90);
GO
-- Look at our configuration
SELECT * FROM sys.dm_resource_governor_resource_pools;
GO
Demo : Setting up RG
-- Need to reconfigure
ALTER RESOURCE GOVERNOR RECONFIGURE;
GO
SELECT * FROM sys.dm_resource_governor_resource_pools;
GO
-- Add two workload groups
CREATE WORKLOAD GROUP MarketingGroup
USING MarketingPool;
GO
CREATE WORKLOAD GROUP DevelopmentGroup
USING DevelopmentPool;
GO
-- Look at our configuration
SELECT * FROM sys.dm_resource_governor_workload_groups;
GO
Demo : Setting up RG
-- Need to reconfigure again
ALTER RESOURCE GOVERNOR RECONFIGURE;
GO
SELECT * FROM sys.dm_resource_governor_workload_groups;
GO
-- Create some dummy databases. The classifier function will
-- use the database name in the connection string to decide
-- which group to put the connection in.
IF DB_ID ('MarketingDB') IS NULL CREATE DATABASE MarketingDB;
GO
IF DB_ID ('DevelopmentDB') IS NULL CREATE DATABASE DevelopmentDB;
GO
-- Define a classifier function
IF OBJECT_ID ('dbo.MyClassifier') IS NOT NULL
DROP FUNCTION dbo.MyClassifier;
GO
Demo : Setting up RG
CREATE FUNCTION dbo.MyClassifier ()
RETURNS SYSNAME WITH SCHEMABINDING
AS
BEGIN
DECLARE @GroupName SYSNAME;
IF ORIGINAL_DB_NAME () = 'MarketingDB'
SET @GroupName = 'MarketingGroup';
ELSE IF ORIGINAL_DB_NAME () = 'DevelopmentDB'
SET @GroupName = 'DevelopmentGroup';
ELSE SET @GroupName = 'Default';
RETURN @GroupName;
END;
GO
-- Register it
ALTER RESOURCE GOVERNOR WITH (CLASSIFIER_FUNCTION = dbo.MyClassifier);
GO
ALTER RESOURCE GOVERNOR RECONFIGURE;
GO
Demo : Setting up RG
-- Look at our configuration again
SELECT * FROM sys.dm_resource_governor_configuration;
GO
-- Now open System Monitor, Action | New Window From Here.
-- Add the SQLDEV01 Resource Pools counters for Marketing and Development
-- Run
-- sqlcmd /E /S.\SQLDEV01 /d<dbname> /iRunQueries.sql
-- Do marketing first and then development
RunQueries.sql
IF OBJECT_ID ('t1') IS NOT NULL DROP TABLE t1;
GO
CREATE TABLE t1 (c1 INT, c2 VARCHAR (8000));
CREATE CLUSTERED INDEX t1c1 ON t1 (c1);
GO
SET NOCOUNT ON;
GO
DECLARE @count INT;
SET @count = 0;
WHILE (@count < 1000)
BEGIN
INSERT INTO t1 VALUES (@count, REPLICATE ('a', 8000));
SET @count = @count + 1;
END;
-- This won't do an physical IOs (as the index is in the buffer pool
-- and doesn't have any fragmentation) but it will spin the CPU while
-- it processes the index.
WHILE (1 = 1) ALTER INDEX t1c1 ON t1 REORGANIZE;
Q & A
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