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Re: [tor-talk] Practical deanonymization using CPU load covert channels
> With two computers connected via Ethernet through a switch, I would
> normally get ping timings of around 250 microseconds.
> However, when the computer being pinged was pegged at 100% CPU on all
> cores, _ping latency would drop to about 170 microseconds._
This is probably caused by power management. Depending on the CPU, C3 wake latency can be >35us, C6 wake latency >100us.
You should try to disable these C-states in the BIOS or kernel:
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