InsightfulLogic
Caching In: Understand, Measure and Use your CPU Cache more effectively Slides from my Javaone talk on CPU Caching Wed 02 October 2013 I've put the slides online for Javaone talk on CPU Cache Optimisation. Here's the talk abstract: Modern computationally intensive tasks are rarely bottlenecked by the absolute performance of your processor cores. The real bottleneck in 2013 is getting data out of m
How long does it take to make a context switch?
That's a interesting question I'm willing to spend some of my time on. Someone at StumbleUpon emitted the hypothesis that with all the improvements in the Nehalem architecture (marketed as Intel i7), context switching would be much faster. How would you devise a test to empirically find an answer to this question? How expensive are context switches anyway? (tl;dr answer: very expensive) The lineup
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