Finding and fixing top performance issues with new relic rpm

Finding and Fixing Performance Issues with New Relic RPMDecember 8th, 2010 @ 10AM PSTBrian Doll - New RelicApplication Performance Engineer

Brian DollApplication Performance Engineering

http://www.slideshare.net/briandoll

New Relic is the leading software as a service provider of application performance management tools. More than 6,000 companies use RPM™, to manage more than 90,000 Java, .net, php, Ruby, or JRuby applications. RPM enables developers and operations teams to monitor, troubleshoot and optimize their web applications.

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RPM ✓Monitors✓Troubleshoots✓Tunes

Web Applications

In the Cloud or

Datacenter

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Top 5 Performance Issues#5 N+1 Queries

Death by a thousand paper cuts

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70x per transaction!

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1 parent+ 15 children___________________________________

16 queries!

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Eager vs. Lazy Loading

EagerLazy

vs.

2 SQL queries vs. 16 SQL queries

EagerLazy

vs.

2 SQL queries vs. 16 SQL queries

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Top 5 Performance Issues#5 N+1 Queries

#4 Slow SQL performance

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Transaction Traces

Missing index

Almost one full second!

Explain Plans are Maps to Improving SQL Queries

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Top 5 Performance Issues#5 N+1 Queries

#4 Slow SQL performance

#3 Insufficient System Resources

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Waiting in line...

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How are we constrained?

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+

Scaling Silver Bullet?

+

+?

?

?

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Top 5 Performance Issues#5 N+1 Queries

#4 Slow SQL performance

#3 Insufficient System Resources

#2 Web Service Domino Effect

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Uh oh...

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/b

!"#$

!"#$

!"#$

!"#$

!"#$!%&'()*

Search service unavailable

Unhappy customers

Lost sales

leads to...

leads to...

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CircuitBreakers

CascadingFailures

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Top 5 Performance Issues#5 N+1 Queries

#4 Slow SQL performance

#3 Insufficient System Resources

#2 Web Service Domino Effect

#1 Repetitive Work Syndrome or Cache as cache can

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Lots of work

Slow

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Caching is easy.

Cache invalidation is not.

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How RPM Works

a!

a! a!

a!

Https

Https

Applications

App Team

New Relic Service

๏ Secure, reliable service๏ No private user data๏ View app performance from anywhere

Supports

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Faster apps = Happy customers

+

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15% discount forJoyent customers

Special Offer:

•Installs in 2 minutes

•Supports Joyent SmartMachines✓Java✓Ruby✓PHP

Q&A

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Questions?

• Live Q&A during the webinar

• http://support.newrelic.com/

• Email: support@newrelic.com

• Twitter: @NewRelic

• IRC: #NewRelic on Freenode