The bandwidth problem
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.
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Annabel Amos,in Daventry
But even with that level of subterfuge, the abuser was conscious of "covering their tracks", cropping or altering any identifying features, says Squire. It was impossible to work out who, or where, Lucy was.