Re: [tor-relays] Sanity check on NumCPUs

On Fri, 27 May 2022 13:11:06 -0500 Thoughts thoughts@kevinsthoughts.com wrote:

It was my impression from reading some older documents that tor didn't multithread well.

Indeed it does not. But there's no need to hard-cap it to 2 CPUs via config, unless the plan is that multi-instance scenario with 2 cores per instance.

Its also been my observation, but wanted a sanity check to see if that was still the case.  For instance, on one quad core low-power system I had, tor would max out at 28% of CPU - using 100% of one core and about 12% of a second (for a total of 112/4 = 28% of the system).