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Performance tuning and SQL Nexus
Michelle Gutzait [email protected]
Blog: http://michelle-gutzait.spaces.live.com/default.aspx
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The big boss
The developers
The junior developers
The analysts
He who
thinks he’s
the big boss
The users
“My” DB server
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What I would like EVERYONE to THINK I do !
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A DBA
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Fast +
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So that I can REALLY BE…
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Unknown
Defined
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My SP is
timing out !!
The report
is slow
This
update
timeouts
The job is
taking too
long
This query
is the
deadlock
victim
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Server is too slow Something is broken
Application crashes Weird behavior
Timeouts
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Top down Bottom up
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TOP DOWN is the best
approach.
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Also for:
Capacity Planning
Periodical performance reviews
And (probably) more…
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Windows Performance Monitor
SQL Server Profiler &
SQL Traces
ReadTrace
SQL Server Management Studio
Windows Management Instrumentation
(WMI)
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Database Engine Tuning Advisor
DMVs and statistics
SQL Server 2008 Activity Monitor
SQL Server 2008 and R2 Ent tools…
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PSSDiag
SQLDiag and PerfStats
Performance Analysis of Logs
(PAL)
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3-rd party tool
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I like it simple!!
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Michelle’s… Performance Counters
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There are too MANY things to check for!
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Hardware
Operating System
SQL Server
(Network?)
Database applications
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CPU
Memory
IO
SQL Server
(Network?)
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Windows Performance Monitor
DMVs
SQL Server Profiler &
SQL Traces
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Performance analysis
with
Windows Performance
Monitor…
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OS/HARDWARE SQL SERVER
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CPU analysis
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Memory analysis
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SQL Server Memory
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IO and disk analysis
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SQL Server behavior
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Performance analysis
with
DMVs
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Troubleshooting Performance Problems in SQL Server 2005
http://technet.microsoft.com/library/Cc966540#EFAA
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SCRIPT REPOSITORIES
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CPU analysis
Number of runnable tasks in each
scheduler
Which currently
cached batches or
procedures are using
the most CPU
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SQL Server Memory analysis
Analysis of internal
memory pressure in
SQL Server
amount of memory consumed by
different SQL Server components
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Latch waits - physical I/O waits
when a page is not available in
the buffer pool.
Currently pending I/O requests
IO and disk analysis
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And much more…
WAIT STATISTICS
INDEX ANALYSIS
CACHE PLAN
TEMPDB USAGE
HEAVY T-SQL
BLOCKS/LOCKS
DEADLOCKS
ETC… ETC… ETC…
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Michelle’s…
Index and T-SQL
Analysis with
DMVs
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Performance analysis
with
SQL Profiler
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Again…
T-SQL ANALYSIS
BLOCKS/LOCKS
DEADLOCKS
LOGINS/LOGOUTS
COMPILATIONS/RECOMP
ERRORS AND WARNINGS
CACHE MISSES
ETC… ETC… ETC…
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How do YOU FEEL about the
EXCESSIVE INFO?
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Fast +
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PSSDIAG for SQL Server 7
and 2000
Installed with SQL Server
2005 and higher
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COMPONENTS
SQL Traces
Performance Monitor
Others: Event Logs, Error
Logs, mini-dumps, msinfo32
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COMPONENTS
Add your own
Example: pull data from DMVs
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Features
Command line
Service
Scheduled
XML config file
One or all instances
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Wait stats (DMVs)
SQLDiag
SQL Traces
Custom XML files
Blocks/locks (DMVs)
Integrated with SQLNexus
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HTML REPORT
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Cumulative query
performance data
Integrated with SQLNexus
Part of the RML
Utilities package
Multiple files
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SSRS reporting
+ Extended reports
SQLDiag / PerStats
ReadTrace
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