Just opening irb and typing require 'mongoid' takes more than 5 seconds on my Macbook Air. Is it normal, and how can I speed this up ? It slows down a lot my Rails and Ruby apps launches.
I tried with versions 2.0.1 and 2.1.8, same result. Ruby version is ruby 1.9.2p136 (2010-12-25 revision 30365) [x86_64-darwin10.6.0]
Thanks!
require 'mongoid'
Seems to be a call that takes long, indeed.
On my MacBook Pro (ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.0]) it's taking about 5-7 seconds (I've tested it on irb).
Note that one interesting message I got was:
**Notice: C extension not loaded. This is required for optimum MongoDB
Ruby driver performance. You can install the extension as follows:
gem install bson_ext
If you continue to receive this message after installing, make sure
that the bson_ext gem is in your load path and that the bson_ext and
mongo gems are of the same version.
Installing that gem does not make the gem load faster but it seems to improve speed overall.
Bottom line: try to make that require only once and at the start of your application.
Related
I have a Sinatra app that I continually upgrade (local only, at the moment). Problem being that I know nothing at all about Ruby — my friend made me the app and it's worked beautifully for over almost a year.
To see the site on localhost, I do this:
bundle exec unicorn -l 9000
I don't understand this, haven't needed to. I know I'm using the unicorn gem to run the app directed at port 9000 (due to an old printer conflict).
Today, I get this error:
in `evaluate': compile error (SyntaxError)
syntax error, unexpected ':', expecting $end
which refers to line 16 of my gem file, the sinatra-contrib gem:
gem "sinatra-contrib", require: "sinatra/reloader"
I've never had this error before. Haven't ever touched the gem file, and it's been working for a year. The only thing I can think I've done recently that may have affected my environment is installing a gemset called Wordless:
rvm use 1.8.7#wordless --create --default && gem install therubyracer sprockets compass coffee-script thor yui-compressor && rvm wrapper 1.8.7#wordless wordless compass ruby
I'd appreciate insights, and hopefully I can start to learn a thing or two about managing ruby gems. Thanks.
You were using Ruby 1.9 before. The line you referenced is in 1.9 format, which Ruby 1.8 does not understand.
When you installed Wordless you said:
rvm use 1.8.7#wordless --create --default
This made Ruby 1.8.7 your default interpreter. To switch back to whatever you used before do:
rvm list rubies
And then:
rvm use [the 1.9.x you found in the list above] --default
I am getting an error when i am running any sort of rake command , it is showing me
rake aborted!
no such file to load -- config/environment
I am trying to upgrade the ruby version from ruby 1.8.7 to ruby 1.9.2 and rails 2.3.11 to rails 3.0.9 and when i am trying to start the server it is showing me
Value assigned to config.time_zone not recognized.Run "rake -D time" for a list of tasks for finding appropriate time zone names. (RuntimeError)
I am using RVM for this upgrade
ruby -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [i686-linux]
rails -v
Rails 3.0.9
You can't just upgrade from Rails 2 to 3 without some rather extensive preparation. All hell will break loose. Check out these Railscasts for starters:
http://railscasts.com/episodes/225-upgrading-to-rails-3-part-1
http://railscasts.com/episodes/226-upgrading-to-rails-3-part-2
http://railscasts.com/episodes/227-upgrading-to-rails-3-part-3
There might be newer resources out there. I'd also suggest to upgrade first ruby and then Rails, or vice versa, not both at the same time. Divide and conquer.
Peepcode Rails 3 Upgrade Handbook PDF
Rails Core suggestions: Plugin to run checks on your Rails 2.x/3.x to check for obvious upgrade points on the path to 3.0.
I'm running Ruby 1.9.2p180 on Ubuntu 11.04 64-bit.
I have the simplest possible CoffeeScript example using Sinatra which runs fine, but doesn't stop when I press the Ctrl+C shortcut. So every time I have to kill -9 and it's getting quite tedious.
The app.rb:
require 'sinatra'
require 'coffee-script'
get '/' do
'<script src="/app.js" type="text/javascript"></script>'
end
get '/app.js' do
coffee :app
end
The views/app.coffee:
alert 'Foo'
It works on Ruby 1.8.7 with minor modifications:
require 'rubygems'
require 'sinatra'
require 'coffee-script'
require 'json'
get '/' do
'<script src="/app.js" type="text/javascript"></script>'
end
get '/app.js' do
coffee :app
end
It also works on 1.9.2 when I remove the line require 'coffee-script', but gives me a warning:
WARN: tilt autoloading 'coffee_script' in a non thread-safe way; explicit require 'coffee_script' suggested.
Figured out that it works when using therubyracer, but fails on node. The version 0.1.97 from Ubuntu 10.10 repositories is the only exception. When using the 0.2.6 from Natty, it fails and also when installing the latest (0.4.8) using nvm, I wasn't able to install 0.1.97 via nvm.
Unable to replicate. I'm on a Mac (OS 10.6.7) running bash and Ruby 1.9.2p180. I don't get your tilt warning, either.
I also haven't experienced this problem when using The Middleman (Sinatra-based) or Rails 3.1; both use the same coffee-script gem (as does Tilt; I suspect the coffee_script is just a typo).
Have you tried updating all the pertinent gems (sinatra, coffee-script, tilt, execjs) to their latest versions? What JS environment do you have on your system (e.g. do you have node, or are you relying on therubyracer)?
On Ruby 1.9.2, Sinatra 1.3.2, CoffeeScript 2.2.0 and Node 0.6.2 this does not occur anymore.
-- UPDATE --
Ok its fixed. This is what I did. remove all ruby and rubygems completely. then install ruby1.9.1-full and rubygems1.9.1 then install the twitter gem.
Hi guys,
I am having trouble working with the Twitter gem. I am using ruby 1.8.7
After installing when I try to run a simple script I get this error
ruby twitter.rb
./twitter.rb:5: uninitialized constant Twitter (NameError)
from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in gem_original_require'
from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:inrequire'
from twitter.rb:2
I running this on a Ubuntu box. I checked with gem -list and I see the Twitter (1.1.0) is listed there.
this is the code I am trying to run
require "rubygems"
require 'twitter'
puts Twitter.user_timeline("test").first.text
Any ideas ?
I believe it only works with Ruby 1.9 If you want to use twitter gem try version 0.9 with Ruby 1.8.x
This works for me:
ruby-1.9.2-p0 > require 'twitter'
=> true
ruby-1.9.2-p0 > puts Twitter.user_timeline("test").first.text
TExES Pedagogy and Professional Responsibilities EC-12 Teacher Certification Test Prep Study Guid… - by Sharon A Wynne http://amzn.to/f3kF74
=> nil
which version of ruby are you using?
gouravtiwari21's comment seems to fix the problem, but it's wrong to suggest that the twitter gem requires 0.9.0 if you want to run it using Ruby 1.8.x.
You can check out the version compatibility here:
http://travis-ci.org/#!/jnunemaker/twitter
It shows the twitter gem working with Ruby installs as low as 1.8.7.
For me, it was an issue with having the correct dependent gems, as well as the correct versions.
Here's how I got it working:
I ran:
sudo gem list
And compared the versions of specific gems with what I found here:
https://github.com/jnunemaker/twitter/blob/master/HISTORY.md (I simply searched for the word 'dependency' to see which versions twitter cared about.
I also found this diff:
https://github.com/jnunemaker/twitter/commit/ac8114c1f6ba2da20c2267d3133252c2ffc6b6a3
And I compared the gems listed there with what I had installed, and I just made sure my system lined up with what I was seeing in the version notes. Oftentimes what happened is that I had multiple versions of a gem, and for some reason, the lower version was taking precedence.
I'm not sure why I still have to add
gem 'twitter', '1.7.1'
to my Gemfile, but alas, that's the last step required in order to get this stuff working.
Don't forget to restart your server, and you should be good!
i need a way to run following nokogiri script
#parser.rb
require 'nokogiri'
def parseit()
//...
end
and call the parseit() while running below main.rb in jruby
#main.rb
require 'parser'
parseit()
Of course the problem is jruby cannot find 'nokogiri' as I have not installed it aka nokogiri-java via jruby -S gem install nokogiri
The reason is there is some bug I found in nokogiri running under Jruby, so I have only installed nokogiri on Ruby not Jruby. The parser.rb runs perfectly under just Ruby.
So my objective is to be able to run parseit() without having to install nokogiri on Jruby!
Nokogiri works just fine under JRuby (1.4.0 has issues, but the 1.4.1 version of the gem has been working perfect for me).
jruby -S gem install nokogiri
and if you have issues with platform detection you can force it:
jruby -S gem install nokogiri --platform=java
You shouldn't have any issues using it with JRuby, if you are then maybe you're stack isn't right.
Nokogiri should work under FFI in JRuby. See http://www.ruby-forum.com/topic/186274
Nokogiri should just work with JRuby via FFI, so it seems to me that the best course of action is just figure out why installing nokogiri in JRuby doesn't work for you.
What kind of problems you see? What JRuby version? What platform?
Here's an example of a situation where it would appear that the Java implementation of Nokogiri is producing different results from the C version, which is causing the loofah gem to fail a bunch of JRuby tests. This is blocking the ability of the Redmine developers from supporting JRuby.
https://github.com/flavorjones/loofah/issues/88#issuecomment-122747924