On 2022-06-15 14:24:31 [+0200], Pierre Gondois wrote: > Hello Sebastian, Hi Pierre, > Since starting the threads represents some work that can disturb > the threads, shouldn't the main thread be migrated to the > 'mainaffinity' mask early as it is right now ? I doubt this such a huge impact given that once the threads are created, they do rt_numa_set_numa_run_on_node() and pthread_setaffinity_np() among other things. > I think it would be better to: > 1. Save the initial mask of the main thread somewhere > 2. Set the affinity of the main thread > 3. Use the initial mask when setting the affinity of the threads If this is *that* important I would lean towards always doing the globalt_barr so all threads start once everything is set up. If I remember correctly, the first few cycles are not counted and just fill the cache. > Regards, > Pierre Sebastian
