Интересен шаг, который сделал Линус Торвальдс. Данная операционная система всегда славилась эффективностью работые при этом не с самыми высокими требованиями. С другой стороны надо двигаться вперед и отказываться от поддержки старого оборудования.
Через десять недель после выхода прошлой версии ядра Linux 3.7 состоялся выпуск системы Linux 3.8 под кодовым названием Unicycling Gorilla. 18 февраля её представил Линус Торвальдс в списке рассылке для разработчиков.
Авторы независимых обзоров Linux 3.8 отмечают самые главные новшества:
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полная поддержка GPU будущих процессоров Intel Haswell
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3D-ускорение на всех чипсетах NVIDIA GeForce
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поддержка файловой системы F2FS для флэш-накопителей
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оптимизация некоторых аспектов производительности в файловых системах Btrfs и Ext4
Как обычно, с новой версией ядра поставляется обновлённый и дополненный комплект драйверов, которые расширяют набор поддерживаемого оборудования в Linux.
Ещё одна интересная особенность нового ядра: из Linux 3.8 удалён код, обеспечивающий поддержку спецификаций i386, так что Linux 3.8 никак нельзя будет запустить на процессорах AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI 486DLC/DLC2, UMC 486SX-S и NexGen Nx586. Устранив поддержку старых CPU, разработчики смогли сократить исходный код на 369 строк.
В обсуждении Линус даже предложил пойти дальше в оптимизации и удалить ветку arch/x86/math-emu с эмуляцией старых сопроцессоров, что необходимо для поддержки 486SX. Но коллеги не поддержали это предложение: кто-то заметил, что некоторые клоны 486SX до сих пор находятся в производстве.
http://www.xakep.ru/post/60142/
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