It depends on the implementation: https://cpucycles.cr.yp.to/counters.html - default-perfevent: the kernel will keep track of counter values on core moves - amd64-pmc: Accesses a cycle counter through RDPMC: best to pin…
The current implementation of "default-perfevent" doesn't take into account perf counter multiplexing, so counters may be off if you have other perf measurements running in the background.…
In Romania this started with a few people at the border offering free food and a a transport company that shuttled refugees from the border to nearby cities/airport. A few Facebook groups popped up and people from…
It depends on the implementation: https://cpucycles.cr.yp.to/counters.html - default-perfevent: the kernel will keep track of counter values on core moves - amd64-pmc: Accesses a cycle counter through RDPMC: best to pin…
The current implementation of "default-perfevent" doesn't take into account perf counter multiplexing, so counters may be off if you have other perf measurements running in the background.…
In Romania this started with a few people at the border offering free food and a a transport company that shuttled refugees from the border to nearby cities/airport. A few Facebook groups popped up and people from…