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"Сравнение производительности сетевого драйвера в вариантах н..." Отправлено Dee, 12-Сен-19 19:13
Они там в pdf-ке с анализом пишут: Swift increments a reference counter for each object passed into a function and decreases it when leaving the function. This is done for every single packet as they are wrapped in Swift-native wrappers for bounds checks. There is no good way to disable this behavior for the wrapper objects while maintaining an idiomatic API for applications using the driver. A total of 76% of the CPU time is spent incrementing and decrementing reference counters. This is the only language runtime evaluated here that incurs a large cost even for objects that are never free’d. 76 процентов, Карл! Тормоз этот ваш свифт.