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Links 1 through 10 of 57 by Atif Aziz tagged performance

“PunyPNG is a free website optimization tool that dramatically reduces the file size of your images without any loss of quality.”

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“Research published a few years back indicated that dispatching through a vtable incurred astonishing overheads, as high as 50% of total execution time. Alternative dispatch techniques based on runtime tests, such as a linear sequence of if statements checking for the various concrete class types, or a sequence of nested if statements forming a binary search, were often more efficient on a variety of hardware.”

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“In the light of evidence that Haskell programs compiled by GHC exhibit large numbers of mispredicted branches on modern processors, we re-examine the “tagless” aspect of the STG-machine that GHC uses as its evaluation model.”

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“The Closure Tools project is an effort by Google engineers to open source the tools used in many of Google's sites and web applications for use by the wider Web development community. The Closure tools include: A JavaScript optimizer (Closure Compiler), a comprehensive JavaScript library (large set of reusable UI widgets and controls, lower-level utilities for DOM manipulation, server communication, animation, data structures, unit testing, rich-text editing, and more), an easy templating system for both Java & JavaScript, a JavaScript style checker and style fixer, and an enhanced stylesheet language (Closure Stylesheets).”

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“A library to provide much faster F# reflection than available in the standard library.”

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“Image optimization is an art few have mastered. Useful image editing tools exist that allow images to be edited to reduce their file size while retaining image quality. Using these tools is a good start for optimizing images, but more can be done using advanced tools like Smush.it.

Smush.it uses optimization techniques specific to image format to remove unnecessary bytes from image files. It is a "lossless" tool, which means it optimizes the images without changing their look or visual quality. After Smush.it runs on a web page it reports how many bytes would be saved by optimizing the page's images and provides a downloadable zip file with the minimized image files.”

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FastMember aims to solve two scenarios: (a) reading and writing properties and fields, known by name at run-time, on a set of homogeneous (i.e. groups of the same type) objects
(b) reading and writing properties and fields, known by name at run-time, on an individual object, which might by a DLR object

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“Now that things have settled down from the move to Rackspace, I wanted to take some time to go over the architectural changes that we’ve made in order to bring you a speedier, more scalable GitHub.”

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“Fast implementation of the old deprecated itoa(), lltoa() etc... plus some C++ wrapping. Theoretically controversed but practically very useful.”

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“If you allocate objects larger than 85000 bytes, they will be allocated in the Large Object Heap (LOH). The LOH is not compacted and collection only occurs after a full collection (so gen 2 must be collected in order to collect an object in the LOH). Short-lived and frequent LOH allocations will kill the performance of your application.”

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