+ parallel_cmdlines = []
+ # FreeBSD doesn't have NUMA support
+ numa_nodes = get_numa_nodes()
+ if len(numa_nodes) > 0:
+ for proc in range(self.n_processes):
+ # spread cpu affinity between NUMA nodes to have less chance of
+ # running out of memory while running multiple test apps in
+ # parallel. to do that, alternate between NUMA nodes in a round
+ # robin fashion, and pick an arbitrary CPU from that node to
+ # taskset our execution to
+ numa_node = numa_nodes[self.active_processes % len(numa_nodes)]
+ cpu_nr = first_cpu_on_node(numa_node)
+ parallel_cmdlines += [self.__get_cmdline(cpu_nr)]
+ # increase number of active processes so that the next cmdline
+ # gets a different NUMA node
+ self.active_processes += 1
+ else:
+ parallel_cmdlines = [self.cmdline] * self.n_processes