The kernel is the shared surfaceWhen any code runs on Linux, it interacts with the hardware through the kernel via system calls. The Linux kernel exposes roughly 340 syscalls, and the kernel implementation is tens of millions of lines of C code. Every syscall is an entry point into that codebase.
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// strict: Catches fire-and-forget writes that ignore backpressure
研究持续一年后进行的评估显示，有氧运动组受试者的大脑预测年龄差数值呈现下降趋势，而对照组的这一数值则有轻微上升。平均而言，有氧运动组的大脑预测年龄差数值降低了约0.6岁，这表明，随访他们时其大脑呈现出更年轻的状态。而对照组的大脑预测年龄差数值看似增加了约0.35岁。当然，这一变化在统计学上并不显著。但整体而言，两组人的大脑年龄差异接近一岁，表明有氧运动组的大脑年轻化比较明显。