зеркало из https://github.com/github/ruby.git
87bc5da60a
[Feature #19678] References from an old object to a write barrier protected young object will not immediately promote the young object. Instead, the young object will age just like any other object, meaning that it has to survive three collections before being promoted to the old generation. References from an old object to a write barrier unprotected object will place the parent object in the remember set for marking during minor collections. This allows the child object to be reclaimed in minor collections at the cost of increased time for minor collections. On one of [Shopify's highest traffic Ruby apps, Storefront Renderer](https://shopify.engineering/how-shopify-reduced-storefront-response-times-rewrite), we saw significant improvements after deploying this feature in production. We compare the GC time and response time of web workers that have the original behaviour (non-experimental group) and this new behaviour (experimental group). We see that with this feature we spend significantly less time in the GC, 0.81x on average, 0.88x on p99, and 0.45x on p99.9. This translates to improvements in average response time (0.96x) and p99 response time (0.92x). |
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README.md
What is Ruby?
Ruby is an interpreted object-oriented programming language often used for web development. It also offers many scripting features to process plain text and serialized files, or manage system tasks. It is simple, straightforward, and extensible.
Features of Ruby
- Simple Syntax
- Normal Object-oriented Features (e.g. class, method calls)
- Advanced Object-oriented Features (e.g. mix-in, singleton-method)
- Operator Overloading
- Exception Handling
- Iterators and Closures
- Garbage Collection
- Dynamic Loading of Object Files (on some architectures)
- Highly Portable (works on many Unix-like/POSIX compatible platforms as well as Windows, macOS, etc.) cf. https://github.com/ruby/ruby/blob/master/doc/maintainers.rdoc#label-Platform+Maintainers
How to get Ruby with Git
For a complete list of ways to install Ruby, including using third-party tools like rvm, see:
https://www.ruby-lang.org/en/downloads/
The mirror of the Ruby source tree can be checked out with the following command:
$ git clone https://github.com/ruby/ruby.git
There are some other branches under development. Try the following command to see the list of branches:
$ git ls-remote https://github.com/ruby/ruby.git
You may also want to use https://git.ruby-lang.org/ruby.git (actual master of Ruby source) if you are a committer.
How to build
see Building Ruby
Ruby home page
Documentation
Mailing list
There is a mailing list to discuss Ruby. To subscribe to this list, please send the following phrase:
subscribe
in the mail body (not subject) to the address ruby-talk-request@ruby-lang.org.
Copying
See the file COPYING.
Feedback
Questions about the Ruby language can be asked on the Ruby-Talk mailing list or on websites like https://stackoverflow.com.
Bugs should be reported at https://bugs.ruby-lang.org. Read "Reporting Issues" for more information.
Contributing
See "Contributing to Ruby", which includes setup and build instructions.
The Author
Ruby was originally designed and developed by Yukihiro Matsumoto (Matz) in 1995.