18c2ecf20Sopenharmony_ciPartial implementation of various ring layouts, useful to tune virtio design. 28c2ecf20Sopenharmony_ciUses shared memory heavily. 38c2ecf20Sopenharmony_ci 48c2ecf20Sopenharmony_ciTypical use: 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci# sh run-on-all.sh perf stat -r 10 --log-fd 1 -- ./ring 7