1. Simple Rails Log Query Analyzer
   • Ran ruby bin/query_log_analyzer.rb ../log/production.log
     • production.log.1 (small log file ~25MB) Just printed the “Totals” heading with no results
     • production.log (large log file ~400MB) Ran for a long time and nothing happened
2. The Action Profiler lets you profile actions to determine points of optimization.
   • See attachment for the error when running action_profiler ChartController#index
   • Madhu thinks it requires Production Log Analyzer (which requires SyslogLogger)
3. rawk.rb
   (recommended by Railscast.com)
   • production.log.1 (small log file ~25MB) shows _{21,300 requests}

   
   

   • _{production.log (large log file ~400MB) —shows only} 27,200 requests
   • Both took about a miute to scan and since only 7,000 difference in requests, we think Rawk is not working
   • 07/23/08: Tried ruby rawk.rb ../log/production.log on sdev but hung for long time and never returned
4. Hodel3000CompliantLogger
   • Looks like it’s working but requires mongrel_rails start instead of ruby script/server. Cannot use it easily with Litespeed probably.
   • Uses Production Log Analyzer but circumvents SyslogLogger (unlke Action Profiler above)
5. Railscast.com’s Request Profiling

<b>Network</b><br>
UNIX hostname: <code><%= `hostname` %></code><br>
SERVER_ADDR: <code><%= request.env["SERVER_ADDR"].to_s %></code> <br>
HOST_NAME : <code><%= request.host %></code> <br>
REMOTE_ADDR: <code><%= request.env["REMOTE_ADDR"].to_s %></code> <br>
<br>
<b>Software</b><br>
Database: <code><%= ActiveRecord::Base.connection.select_value(“SELECT  VERSION()”) %></code><br>
Email delivery method: <code><%= ActionMailer::Base.delivery_method %></code><br>
SMTP server: <code> <%= ActionMailer::Base.smtp_settings[:address] %></code><br>
Ruby: <code> <%= “#{RUBY_VERSION} (#{RUBY_RELEASE_DATE}) on #{RUBY_PLATFORM}” %> </code><br>
Rails: <code> <%= “#{Rails::VERSION::STRING}” %> </code><br>

Network
UNIX hostname: server1.mydomain.com
SERVER_ADDR: 10.2.128.100
HOST_NAME : www.mydomain.com
REMOTE_ADDR: 12.207.103.224

Software
Database: PostgreSQL 8.3.3 on x86_64-redhat-linux-gnu, compiled by GCC gcc (GCC) 4.1.2 20070626 (Red Hat 4.1.2-14)
Email delivery method: activerecord
SMTP server: localhost
Ruby: 1.8.6 (2007-03-13) on x86_64-linux
Rails: 2.1.0

I decided to make the methods in the helper class-scoped (using self below) so that the origin of the helper method is explicitly obvious in the call (eg. to_s below)

app/lib/utility_helper.rb
module UtilityHelper
  def self.camelcase_to_spaced(word)
    word.gsub(/([A-Z])/, " \\1").strip
  end
end

app/models/event.rb
class Event < ActiveRecord::Base
  include UtilityHelper

  def to_s
    UtilityHelper.camelcase_to_spaced("This an Event object")
  end
end

app/helpers/events_helper.rb
module EventsHelper
  include UtilityHelper
end

app/controllers/event_controller.rb
class EventController < ApplicationController
  include UtilityHelper
end


app/views/events/index.html.erb
<%=UtilityHelper.camelcase_to_spaced(event[:event_type])%&rt;


It’s drop dead easy to install:

• To add TuneUp to your Rails application, install the gem:

sudo gem install fiveruns_tuneup

• Then, for a Rails 2.0.x app, run:

fiveruns_tuneup /path/to/rails/app

• For a Rails 2.1 app, update your environment.rb to include this line:

config.gem ‘fiveruns_tuneup’

• Launch your Rails app and you’ll see the header to sign up for for a free account view the stats.

]]> http://jacqueschirag.wordpress.com/2008/06/19/fiveruns-tuneup-rails-monitoring/feed/ 0 Chirag http://jacqueschirag.wordpress.com/2008/01/23/rails-vs-php-vs-java-vs/ http://jacqueschirag.wordpress.com/2008/01/23/rails-vs-php-vs-java-vs/#comments Wed, 23 Jan 2008 18:15:55 +0000 Chirag Patel http://jacqueschirag.wordpress.com/2008/01/23/rails-vs-php-vs-java-vs/ ]]> Good sites comparing Ruby on Rails with other frameworks

Java to Rails:

Evaluation: moving from Java to Ruby on Rails for the CenterNet rewrite

PHP to Rails:

outside.in » outside.in switches to Rails

To be continuted….

Error when updating the user from a form

ActiveRecord::RecordInvalid (Validation failed: Password confirmation can’t be blank, Password is too short (minimum is 4 characters), Password can’t be blank):

Suggestion

It’s probably because of the restrictions on the User model (attr_accessible or attr_protected, in particular). But allowing users access to any part of the User model via mass assignment is dangerous. That’s why many people create a separate Profile model and link it via a 1:1 (belongs_to, has_one) relationship.

Solution

Coming soon

#yum install freetype — did not work

cd /usr/local/src

wget http://download.savannah.gnu.org/releases/freetype/freetype-2.3.5.tar.gz

tar xvzf freetype-2.3.5.tar.gz

./configure

make

make install

yum install glib
yum install glib2
yum install libpng
yum install libjpeg
yum install libtiff
yum install ghostscript
yum install freetype

cd /usr/local/src

wget http://image_magick.veidrodis.com/image_magick/ImageMagick.tar.gz

tar xvzf ImageMagick.tar.gz

cd ImageMagick-X.Y.Z

./configure –disable-static –with-modules –without-perl –without-magick-plus-plus –with-quantum-depth=8 CFLAGS=-fPIC

make

make install

wget http://files.rubyforge.mmmultiworks.com/rmagick/RMagick-1.15.11.tar.gz

tar zxvf RMagick-1.15.11.tar.gz

cd RMagick-1.15.4

./configure

export LD_LIBRARY_PATH=/usr/local/lib

echo $LD_LIBRARY_PATH

make

make install

#test Rmagick in Rails

root# ruby script/console

irb(main):001:0> require ‘RMagick’

irb(main):002:0> include Magick

=> Object

irb(main):003:0> img = ImageList.new “test.jpg”

=> [test.jpg JPEG 10x11 DirectClass 8-bit 391b]

irb(main):004:0> img.write “test.png”

=> [test.jpg=>test.png JPEG 10x11 DirectClass 8-bit]

irb(main):005:0>

== CreateHeartrates: migrating ================================================

– create_table(:heartrates)

NOTICE: CREATE TABLE will create implicit sequence “heartrates_id_seq” for serial column “heartrates.id”

rake aborted!

PGError: ERROR: multiple default values specified for column “id” of table “heartrates”

: CREATE TABLE heartrates (“id” serial primary key DEFAULT NULL, “user_id” integer DEFAULT NULL, “timestamp” timestamp with time zone DEFAULT NULL, “heartrate” smallint NOT NULL)

Solution

I don’t see the above error on my Lenovo Windows machine because it’s running PostgreSQL 8.2.4. The issue occurs with PostgreSQL 8.2.5

Add this to the create table migration

t.column :id, :primary_key, :null => false

This is probably the simplest way to deal with this defect.

Post from: Migrations and PostgreSQL Primary Keys) – Rails Trac – Trac:

I tried to find a good place to patch the code, but everywhere I did, I could easily imagine someone yelling, “you can’t touch that”!

For instance, if scheme_definitions.rb’s primary_key could set :null => false, then everyone should be happy, even other db’s. Except, that of course you change all db’s to ‘NOT NULL’ versus ‘DEFAULT NULL’. I don’t know why you’d want to say ‘DEFAULT NULL’ though, it seems vaguely wrong.

This seems to be still in rails 2.0 too, and is still in 1.2.6.

-Adam

I executed the following command twice (while I was still in #overflow)

/msg nickserv register <your-password>
The first time I ran it, I got the following message:

*** -NickServ- Please wait 120 seconds before using REGISTER again

I waited a while and got this after running it a second time

:*** -NickServ- Your nickname is now registered with the password [<my-password> ].

Last, I ran the following command for good measure:

/msg nickserv register <your-password>

And got the following result:

*** -NickServ- You have already identified