Thomas <74cmo...@gmail.com> writes:
> Interesting enough is: my top figure reported by perf is like yours: > > Samples: 6M of event 'cycles:u', Event count (approx.): 1936571734942 > Overhead Command Shared Object Symbol > 7,95% qemu-system-arm qemu-system-arm [.] > helper_lookup_tb_ptr > ◆ > 4,16% qemu-system-arm qemu-system-arm [.] > cpu_get_tb_cpu_state > ▒ Not quite - cpu_get_tb_state should be a fair bit cheaper now since the optimisations to hflags where introduced. > 2,52% qemu-system-arm libpthread-2.32.so [.] > __pthread_mutex_lock > ▒ This indicated there is some lock contention. The QSP profiler can help here. Are you running the latest state of master? -- Alex Bennée
