Rails 3 在 Ruby 1.9.2 上初始化非常慢 [英] Rails 3 initializes extremely slow on Ruby 1.9.2

问题描述

我使用 RVM 来管理环境，安装了 Ruby 1.9.2.p136(我认为是它的最新版本.)和 Rails 3，创建了 gemset 并运行了 bundler.到目前为止一切正常但是;

Rails 在运行命令时初始化非常慢，例如 generate、destroy、rake 等.完成命令大约需要 30-45 秒.如果使用 Ruby Enterprise Edition 或 Ruby 1.8.7 就不会发生这种情况

为什么会这样.有什么想法吗?在 Ubuntu 10.10、RVM、Ruby 1.9.2、Rails 3 上运行

谢谢.

解决方案

Rails-Core 上有一个关于此的主题 - http://groups.google.com/group/rubyonrails-core/browse_thread/thread/88519ef5a53088a1/c060drat79>

引用耶胡达·卡茨的话

C 要求代码在 1.9 中做的一些事情会减慢速度.一个这样的例子是重新检查 $LOAD_PATH 以确保它全部展开在每一个要求.这是 ruby​​-core 应该解决的问题.如果还没有的话，我会在 redmine 上开一张票."

我也遇到了这个问题，$LOAD_PATH 问题似乎是一个潜在的原因.让我们希望它尽快得到修复.

I'm using RVM for managing environment, installed Ruby 1.9.2.p136 (i think its latest release.) and Rails 3, created gemsets and run bundler. everything working good so far but;

Rails initalizes extremely slow when running commands, i.e. generate, destroy, rake etc. Takes about 30-45 seconds to complete command. This will never happens if use Ruby Enterprise Edition or Ruby 1.8.7

Why this happens. Any thoughts? Running on Ubuntu 10.10, RVM, Ruby 1.9.2, Rails 3

Thanks.

解决方案

There is a thread about this on Rails-Core - http://groups.google.com/group/rubyonrails-core/browse_thread/thread/88519ef5a53088a1/c01ba447c6dc0de7?lnk=raot

To quote Yehuda Katz

"There are things that the C require code does in 1.9 that slow things down. One such example is re-checking $LOAD_PATH to make sure it is all expanded on every require. This is something that should be addressed by ruby-core. I'll open a ticket on redmine if there isn't one already."

I am also experiencing this problem and a $LOAD_PATH issue seems like a potential cause. Lets hope it gets fixed soon.

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