Atomicity: Updates are applied in a single operation at reboot, reducing the risk of inconsistency.
The trade-off is performance. Every syscall goes through user-space interception, which adds overhead. I/O-heavy workloads feel this the most. For short-lived code execution like scripts and tests, it is usually fine, but for sustained high-throughput I/O, it can matter.，这一点在同城约会中也有详细论述
Faster and more private，推荐阅读同城约会获取更多信息
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