InfoQ Homepage Performance & Scalability Content on InfoQ
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CrossTwine Linker Aims to Boost MRI and 1.9.1 Performance
CrossTwine aims to improve the performance of MRI, 1.9.1, and Python. Unlike new Ruby VMs, the CrossTwine Linker allows to improve efficiency of the existing interpreters and VMs, while keeping their complete feature set. The company plans to offer services to use the CrossTwine Linker technology to speed up specific applications.
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Adobe ConnectNow-Terracotta Integration Uses Distributed Shared Memory to Manage Scalability
Adobe ConnectNow is a free web conferencing and collaboration software. It's built on the Adobe Flash Collaboration Service (AFCS). For the Java server-side component of AFCS, Adobe integrated ConnectNow application with Terracotta software to take advantage of Terracotta's shared application memory store to address scalability of the web application.
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What Is .NET 4.0 Beta 1 Going to Bring to PLINQ?
Ed Essey, a Program Manager on the Microsoft Parallel Computing team, wrote on the latest enhancements to PLINQ that are to appear in .NET 4.0 Beta 1 that is to be released soon. Some of them are: “With” Operators Pattern, Execution Mode, Cancellation, Refactoring, Performance Improvements.
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Article: Performance Analysis and Monitoring with Perf4J
In this article Alex Devine explains how Java developers can take advantage of Perf4J, an open source toolset for adding code timing statements and for logging, analyzing and monitoring the results.
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Is Parallel Programming Hard? Prof. Guy Blelloch Argues That It Isn’t
In an essay on Cilk Arts, Professor Guy Blelloch argues that parallel programming is not intrinsically hard, but rather a question of abstraction. The three problems identified by Blelloch are a lack of training in parallel thinking, separating parallel implementation from algorithms, and determinism. After detailing each, he explains why he thinks they can be overcome.
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Ruby On... SAP: One More Step In The Enterprise With A New Ruby VM
SAP, the market share leader in CRM & ERP and second largest business software company is adopting Ruby as part of their SAP NetWeaver and SAP ERP 6.0 solution. ABAP Virtual Machine will be able to run Ruby Code through the Blue Ruby extension. With recent debates on Ruby VMs, we talked with Juergen Schmerder from SAP and Charles Nutter from Sun (JRuby).
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Ruby Performance Roundup: GC Tuning, MagLev, MacRuby
Ruby's performance is being improved on all fronts. The GC gets help from REE's work on the COW GC and some tunings tips help to fine tune it. MacRuby's VM keeps on improving and tail call optimization was recently added. Also: news of a MagLev Beta in Q2.
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Sun's Garbage First Collector Largely Eliminates Low Latency/High Throughput Tradeoff
In a recent podcast, James Gosling talked to Danny Coward about the significance of Sun's new Hotspot garbage collector Garbage First for developers of large-scale enterprise systems.
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JRuby Roundup: Google App Engine Support, BiteScript, New Compiler
With JRuby 1.2 released, the JRuby community is working on new projects such as a new Ruby to bytecode compiler, a standalone JRuby parser and a first release of the bytecode generating DSL Bitescript. Also: JRuby works on Google App Engine's newly announced Java support.
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Clojure Roundup: Clojure on CLR and Javascript, Terracotta, New Release
Clojure has attracted a lot of interest recently. A new project allows to use Clojure with Terracotta to run code across many JVMs, ports of Clojure to .NET and Javascript have become available, and a new Clojure release adds new features and makes sequences fully lazy.
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MacRuby 0.5 Will Have Faster VM Based on LLVM,
The first results of performance work on the next version of MacRuby are now available in an experimental branch. A new VM based on LLVM is used and already shows significant speed improvements over earlier MacRuby versions.
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Performance Engineering in an Agile Project
Performance Engineering is an important software development discipline that ensures that applications are architect-ed, designed, built and tested for performance. However, mostly in traditional projects the scope of performance engineering is limited to performance testing. This is a sure cause for concern.
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FriendFeed Implements Schema-less Storage Atop MySQL
Brett Taylor, founder of FriendFeed, describes how they overcame some limitations of MySQL to handle problems of scaling and database evolution by implementing a "schema-less" storage system on top of MySQL.
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Ruby XML Roundup: Hpricot 0.7, Stable Libxml-ruby and Nokogiri
A few recent software releases have improved Ruby's XML support. After last years release of the Nokogiri XML library, Hpricot 0.7 has now been released with performance improvements. Also, libxml-ruby, which is built on the same XML library as Nokogiri has been released and recently caught up with Nokogiri's speed.
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Review: The Art of High Performance SQL Code
It is one thing to look at the execution plan for SQL Server queries, it is quite another to know what they mean. Grant Fritchey’s book, The Art of High Performance SQL Code: Part 1 Dissecting SQL Server Execution Plans, helps you get to that point.