Performance testing, best practices and gems and tools

[Rodney Degracia]

I did some research on performance testing for Rails Apps and I found two gems:  query_reviewer and bullet.

Query_reviewer: It looks like it's great for getting back information, from performance testing of a Rails App.  I just thought it would be good for the community to know about it.  The downside is that it looks to be a bit older, and I am not sure how it works with Rails 3.0 http://code.google.com/p/query-reviewer/

Bullet: A rails plugin/gem to kill N+1 queries and unused eager loading.   The good news, it supports Rails 3. https://github.com/flyerhzm/bullet

--

Does anyone else have suggestions for additional Ruby gems that can help with performance testing and tuning of Rails Apps ?

Is there a best practice document  or tools for executing performance tests on Rails Apps, for example:

* Load Testing

* Stress Testing

* Endurance Testing, for example applying continuous expected load, and monitoring memory and CPU.

* Spike Testing, for example increasing the number of users, and monitoring how the application behavior changes.

* Load-balancing Testing

I know that New Relic provides performance metrics, but are there other tools or gems?

What do you think?

Rodney 

[Jason Seifer]

You can't go wrong with ruby-prof for finding slow ruby code.

Regarding load/stress/etc testing, check out Tsung (http://
tsung.erlang-projects.org/). It's not a ruby gem but rather an erlang
based load/stress testing tool. It's got a ton of great features and
it's not limited to just http -- other protocols can be tested as
well. You can also use it in a distributed manner and spin up a bunch
of ec2 instances to simulate a ton of concurrent users and hammer your
servers for as long as you want.

On May 2, 4:56 pm, Rodney Degracia <rdegr...@gmail.com> wrote:
> I did some research on performance testing for Rails Apps and I found two gems:  query_reviewer and bullet.
>

> Query_reviewer: It looks like it's great for getting back information, from performance testing of a Rails App.  I just thought it would be good for the community to know about it.  The downside is that it looks to be a bit older, and I am not sure how it works with Rails 3.0http://code.google.com/p/query-reviewer/
>
> Bullet: A rails plugin/gem to kill N+1 queries and unused eager loading.   The good news, it supports Rails 3.https://github.com/flyerhzm/bullet