Time namespacing would achieve this, had it not omitted the real-time clock: > Note that time namespaces do not virtualize the CLOCK_REALTIME clock. Virtualiza

Time namespacing would achieve this, had it not omitted the real-time clock: > Note that time namespaces do not virtualize the CLOCK_REALTIME clock. Virtualization of this clock was avoided for reasons of complexity and overhead within the kernel.