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How does Docker isolate high-resolution timers?

Expert Docker
Quick Answer By default, containers share the host's clock and can read high-resolution timers. Docker doesn't expose a timer namespace (it's a newer kernel feature). A container can observe timing information useful for side-channel attacks (Spectre-class). Some hardened environments mount a fake /proc/timer_list to prevent this.

Answer

Time namespaces provide isolated clocks preventing timing attacks.
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