<pedrocorreia.net ⁄>

<Erlang vs Java memory architecture ⁄ >

clicks: 4299 4299 2011-04-13 2011-04-13 goto tecnologia myNews tecnologia  Bookmark This Bookmark This

I read a really, really interesting article on memory management strategies for the Erlang VM. It was written as a thesis by Jesper Wilhelmsson I thought it might be nice to discuss the differences between Erlang's memory setup and Oracle's Java VM.

As a real short introduction for those who have never heard of Erlang; it is a functional language that uses asynchronous message passing as its basis for concurrency. The message passing uses copy semantics, making distribution over more than one Erlang VM, running on more than one machine essentially transparent to the programmer.

Erlang and Java are similar in the sense that both use a virtual machine to abstract the hardware into a portable layer. Both languages employ machine independent byte code. Both run-time systems rely on garbage collection to free the programmer of doing memory management.

Threading overhead in Erlang is very low. I believe that the memory requirements for a thread in Erlang is about 512 bytes. In Java threads typically need about 512 kilobytes, about 1000 times more. For a programmer, the upshot is that creating threads to do some work asynchronously is not something you have to sit down and think about. Typical Erlang systems have thousands or tens of thousands of threads. There is no futzing with threadpools and executors like we do in Java.

este é só um excerto do artigo, para aceder ao artigo completo, clique no link em baixo:
this is just a small excerpt from the article, to access the full article please click in the link below:


Subscribe News RSS  Subscribe News Updates by E-mail

myNews <myNews show="rand" cat="tecnologia" ⁄>

MongoDb Architecture new ...

NOSQL has become a very heated topic for large web-scale deployment where scalability and semi-struc (...)

clicks: 21675 21675 2012-05-14 2012-05-14 goto url (new window) horicky.blogspo... goto myNews tecnologia

A Hopefully Fair and Useful Comparison of Haskell Web Frameworks new ...

Recently there has been a lot of discussion and questions about the differences between the big thre (...)

clicks: 27049 27049 2012-05-13 2012-05-13 goto url (new window) softwaresimply.... goto myNews tecnologia

Retina graphics for your website new ...

retina.js is an open source script that makes it easy to serve high-resolution images to devices wit (...)

clicks: 17243 17243 2012-05-11 2012-05-11 goto url (new window) retinajs.com/ goto myNews tecnologia

What every programmer should know about memory, Part 1 new ...

In the early days computers were much simpler. The various components of a system, such as the CPU, (...)

clicks: 20681 20681 2012-05-10 2012-05-10 goto url (new window) lwn.net/Article... goto myNews tecnologia

The State Of HTML5 Video

HTML5 has entered the online video market, which is both exciting and challenging for developers in (...)

clicks: 8133 8133 2012-02-14 2012-02-14 goto url (new window) longtailvideo.c... goto myNews tecnologia

A Tour of Amazon's DynamoDB

Amazon's recent release of DynamoDB, a database whose name is inspired by Dynamo, the key-value data (...)

clicks: 7515 7515 2012-02-13 2012-02-13 goto url (new window) paperplanes.de/... goto myNews tecnologia

Google BigQuery Service: Big data analytics at Google speed

Rapidly crunching terabytes of big data can lead to better business decisions, but this has traditio (...)

clicks: 7500 7500 2011-11-30 2011-11-30 goto url (new window) googlecode.blog... goto myNews tecnologia

Video: CSS3 Secrets: 10 things you might not know about CSS3

A number of prominent front-end developers delivered helpful talks at this year's Fronteers 2011 con (...)

clicks: 8200 8200 2011-11-30 2011-11-30 goto url (new window) css.dzone.com/a... goto myNews tecnologia