replay your workload as it is your actual one!
DESCRIPTION
Have you ever wanted to replay your application workload be that because you upgraded to a new hardware, added new indexes or something else? Now there's a feature for that! It's called Distributed Replay and in this session you will learn how this new feature in SQL Server 2012 can help you resolve that problem!TRANSCRIPT
Replay your workload as it’s your actual one!
Boris HristovSQL Server DBA, Speaker, Trainer, Blogger
How many of you…
3reasons why
Possible scenarios:
1.Application compatibility
2.Performance / Load testing
3.Forecasting
What tools to use?
The Mighty Profiler
RML Tools
ReadTrace Reporter
OSTRESS
These are cool…
… but not cool enough!
“There’s a new player in town!” DISTRIBUTED REPLAY
So what’s Distributed Replay?
SQL Server 2012 feature
Available in all editions (kind of…)
Works with 2005 and higher (kind of…)
Distributed Replay Components
1. Administration tool – the cmd tool to manage the replay1. Administration tool – the cmd tool to manage the replay
2. DReplay Controller – the brain behind the replay
3. DReplay Client – machines(up to 16) that replay the workload
4. Target Server – The SQL Server instance you replay against
OK, but how are they working together?
DEMO
Setting up DReplay Environment (installing gotchas)
Installation requirements and gotchas1. Services must run under domain user accounts
2. Firewalls must allow the traffic of DR Components
3. DCOM permissions must be configured
4. SQL Server logins for the clients need to be created
So how do we issue a replay?
Step 1: Capture a trace!
Step 2: Preprocesses the .trc file/s
Step 3: Decide on replay mode and options
Step 4: Replay the preprocessed trace
DEMO
The Replay Process!
Replay your workload. The steps.
1. Capture the workload with Profiler (TSQL-Replay)
2. Preprocess the trace with “dreplay preprocess”
3. Decide on a mode – synchronization or stress
4. Replay the workload with “dreplay replay”
5. Analyze the results
The GUI that is in beta from 2011
At the end
1. The Tool for replaying mission critical workloads
2. Don’t be afraid of not having a GUI
3. Capture -> Preprocess -> Replay
4. Document, blog, share it with the community!
Resources
My blog – FAQ and RunAs Radio Podcast
Channel 9 - Joe Sack(SQLSkills) Intro and Demo
Jonathan Kehayias(SQLSkills) Intro and Demo
Microsoft Peace of Mind Video
MSDN Documentation
Distributed Replay GUI (in beta)
… you and me now
A big thanks to our sponsors
A big thanks to our sponsors
Thank you!