# Rails 3 70% slower than Rails 2.3.5? **URL:** \ **Category:** Rails\ **Created:** [July 12, 2010, 4:11pm UTC](https://www.ruby-forum.com/t/rails-3-70-slower-than-rails-2-3-5/191427 "2010-07-12T16:11:11Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![sharkie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/58f4c7/32.png) [@sharkie](https://www.ruby-forum.com/u/sharkie)\ **Post date:** [July 12, 2010, 4:11pm UTC](https://www.ruby-forum.com/t/rails-3-70-slower-than-rails-2-3-5/191427/1 "2010-07-12T16:11:11Z")
I have finished converting my live apps to Rails 3. I am using Ruby Enterprise 1.8.7 and Passenger 2.2.15 I go from 5.31 trans/sec to 3.05 trans/sec per AWS EC2 instance. $ siege -c 5 -t 1M [http://localhost](http://localhost) RAILS 2.3.5 RESULTS Transactions: 320 hits Availability: 100.00 % Elapsed time: 60.26 secs Data transferred: 6.76 MB Response time: 0.45 secs Transaction rate: 5.31 trans/sec Throughput: 0.11 MB/sec Concurrency: 2.41 Successful transactions: 320 Failed transactions: 0 Longest transaction: 1.05 Shortest transaction: 0.25 RAILS 3 Transactions: 169 hits Availability: 100.00 % Elapsed time: 55.38 secs Data transferred: 3.72 MB Response time: 1.06 secs Transaction rate: 3.05 trans/sec Throughput: 0.07 MB/sec Concurrency: 3.23 Successful transactions: 169 Failed transactions: 0 Longest transaction: 1.74 Shortest transaction: 0.58 This is my passenger settings PassengerRoot /opt/ruby-1.8.7/lib/ruby/gems/1.8/gems/passenger-2.2.15 PassengerRuby /opt/ruby-1.8.7/bin/ruby PassengerMaxPoolSize 6 PassengerUseGlobalQueue on PassengerHighPerformance on ---
**Author:** ![sharkie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/58f4c7/32.png) [@sharkie](https://www.ruby-forum.com/u/sharkie)\ **Post date:** [July 12, 2010, 4:32pm UTC](https://www.ruby-forum.com/t/rails-3-70-slower-than-rails-2-3-5/191427/2 "2010-07-12T16:32:46Z")
I removed Passenger from the equation, and let this be script/server -e production (Rails 2.3.5) vs. rails server -e production (Rails 3). The difference is even greater. BTW. I am on Ubuntu 10.4. RAILS 2.3.5 Transactions: 109 hits Availability: 100.00 % Elapsed time: 59.77 secs Data transferred: 23.80 MB Response time: 2.20 secs Transaction rate: 1.82 trans/sec Throughput: 0.40 MB/sec Concurrency: 4.01 Successful transactions: 109 Failed transactions: 0 Longest transaction: 2.99 Shortest transaction: 0.53 RAILS 3 Transactions: 312 hits Availability: 100.00 % Elapsed time: 60.32 secs Data transferred: 68.81 MB Response time: 0.44 secs Transaction rate: 5.17 trans/sec Throughput: 1.14 MB/sec Concurrency: 2.29 Successful transactions: 312 Failed transactions: 0 Longest transaction: 0.99 Shortest transaction: 0.10 ---
**Author:** ![sharkie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/58f4c7/32.png) [@sharkie](https://www.ruby-forum.com/u/sharkie)\ **Post date:** [July 12, 2010, 5:09pm UTC](https://www.ruby-forum.com/t/rails-3-70-slower-than-rails-2-3-5/191427/3 "2010-07-12T17:09:14Z")
Sharkie L. wrote: > I removed Passenger from the equation, and let this be script/server -e > production (Rails 2.3.5) vs. rails server -e production (Rails 3). > > The difference is even greater. But in the other direction. Look at your figures again: you’re getting 1.82 trans/sec with 2.3.5 and 5.17 trans/sec with 3. ## Best, Marnen Laibow-Koser [http://www.marnen.org](http://www.marnen.org) removed\_email\_address@domain.invalid ---
**Author:** ![sharkie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/58f4c7/32.png) [@sharkie](https://www.ruby-forum.com/u/sharkie)\ **Post date:** [July 12, 2010, 5:18pm UTC](https://www.ruby-forum.com/t/rails-3-70-slower-than-rails-2-3-5/191427/4 "2010-07-12T17:18:57Z")
I seriously apologize: I mislabeled my second results. Rails 2.3.5 is much faster than Rails 3 One other difference is that Rails 2.3.5 is running on Ruby Enterprise 1.8.6 and Rails 3 is running on Ruby Enterprise 1.8.7 both on Ubuntu. RAILS 2.3.5 Transactions: 312 hits Availability: 100.00 % Elapsed time: 60.32 secs Data transferred: 68.81 MB Response time: 0.44 secs Transaction rate: 5.17 trans/sec Throughput: 1.14 MB/sec Concurrency: 2.29 Successful transactions: 312 Failed transactions: 0 Longest transaction: 0.99 Shortest transaction: 0.10 RAILS 3 Transactions: 109 hits Availability: 100.00 % Elapsed time: 59.77 secs Data transferred: 23.80 MB Response time: 2.20 secs Transaction rate: 1.82 trans/sec Throughput: 0.40 MB/sec Concurrency: 4.01 Successful transactions: 109 Failed transactions: 0 Longest transaction: 2.99 Shortest transaction: 0.53 ---
**Author:** ![sharkie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/58f4c7/32.png) [@sharkie](https://www.ruby-forum.com/u/sharkie)\ **Post date:** [July 12, 2010, 6:13pm UTC](https://www.ruby-forum.com/t/rails-3-70-slower-than-rails-2-3-5/191427/5 "2010-07-12T18:13:51Z")
The problem could be with ActiveRecord performance. Rails 2.3.5 puts Benchmark.measure{5000.times{User.find :first, :conditions =\> [“id = ?”, (rand \* 1000 + 1).to\_i]}} 1.500000 0.100000 1.600000 ( 2.371361) Rails 3.0 puts Benchmark.measure{5000.times{User.find :first, :conditions =\> [“id = ?”, (rand \* 1000 + 1).to\_i]}} 8.160000 0.160000 8.320000 ( 15.330955) Is this a known problem? ---
**Author:** ![sharkie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/58f4c7/32.png) [@sharkie](https://www.ruby-forum.com/u/sharkie)\ **Post date:** [July 12, 2010, 7:09pm UTC](https://www.ruby-forum.com/t/rails-3-70-slower-than-rails-2-3-5/191427/6 "2010-07-12T19:09:17Z")
Everything else aside, isn’t going from 5.31 to 3.05 trans/sec 43% slower? Fred ---
**Author:** ![sharkie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/58f4c7/32.png) [@sharkie](https://www.ruby-forum.com/u/sharkie)\ **Post date:** [July 12, 2010, 6:32pm UTC](https://www.ruby-forum.com/t/rails-3-70-slower-than-rails-2-3-5/191427/7 "2010-07-12T18:32:08Z")
I can also reproduce this problem on my Macbook Pro using Snow Leopard 10.6.4 Rails 2.3.5 puts Benchmark.measure{5000.times{User.find :first, :conditions =\> [“id = ?”, (rand \* 1000 + 1).to\_i]}} 2.460000 0.440000 2.900000 ( 20.093052) Rails 3.0 puts Benchmark.measure{5000.times{User.find :first, :conditions =\> [“id = ?”, (rand \* 1000 + 1).to\_i]}} 9.100000 0.810000 9.910000 ( 28.481634)