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Visualizing System Latency 68

ChelleChelle writes "Latency has a direct impact on performance — thus, in order to identify performance issues it is absolutely essential to understand latency. With the introduction of DTrace it is now possible to measure latency at arbitrary points; the problem, however, is how to visually present this data in an effective manner. Toward this end, heat maps can be a powerful tool. When I/O latency is presented as a visual heat map, some intriguing and beautiful patterns can emerge. These patterns provide insight into how a system is actually performing and what kinds of latency end-user applications experience."

Sticky Rice Is the Key To Super Strong Mortar 194

lilbridge writes "For over 1,500 years the Chinese have been using sticky rice as an ingredient in mortar, which has resulted in super strong buildings, many of which are still standing after hundreds of years. Scientists have been studying the sticky rice and lime mortar to unlock the secrets of its strength, and have just determined the secret ingredient that makes the mortar more stable and stronger. The scientists have also concluded that this mixture is the most appropriate for restoration of ancient and historic buildings, which means it is probably also appropriate for new construction as well."

Comment Duh... (Score 1) 211

Oh come on..

The kindle app shows you popular passages that other people highlighted, it only takes half a brain to realize that for this feature they must be storing your and everybody else's highlights..
Seriously.. Just to mess them them up I am highlighting every mistake they make in the OCR process. I am sick to sec those scanning mistakes.


Numeric stability is probably not all that important when you're guessing.