importsys,gcdefbench_small_object_churn():objs= []for_inrange(200_000):objs.append(bytearray(64))for_inrange(200_000):objs.append(bytearray(64));objs.pop(0)defbench_bulk_small_alloc():objs= [bytearray(48)for_inrange(1_000_000)]foroinobjs:o[0]=1defbench_dict_churn():for_inrange(500_000):d= {"a":1,"b":2,"c":3,"d":4};delddefbench_mixed_sizes():sizes= [8,16,24,32,48,64,96,128,192,256,384,512]objs= [bytearray(sizes[i%12])foriinrange(500_000)]defbench_fragmentation():objs= [bytearray(128)for_inrange(500_000)]foriinrange(0,len(objs),2):objs[i]=Noneforiinrange(0,len(objs),2):objs[i]=bytearray(128)defbench_list_of_tuples():objs= [(i,i+1,i+2)foriinrange(1_000_000)]defbench_class_instances():classPt:__slots__= ('x','y','z')def__init__(s,x,y,z):s.x=x;s.y=y;s.z=zobjs= [Pt(i,i+1,i+2)foriinrange(500_000)]defbench_arena_pressure():layers= [[bytearray(256)for_inrange(200_000)]for_inrange(10)]defbench_random_walk():importrandom;random.seed(42)objs= [bytearray(64)for_inrange(1_000_000)]idx=list(range(len(objs)));random.shuffle(idx)foriinidx:objs[i][0]=i&0xffBENCHMARKS=dict(small_object_churn=bench_small_object_churn,bulk_small_alloc=bench_bulk_small_alloc,dict_churn=bench_dict_churn,mixed_sizes=bench_mixed_sizes,fragmentation=bench_fragmentation,list_of_tuples=bench_list_of_tuples,class_instances=bench_class_instances,arena_pressure=bench_arena_pressure,random_walk=bench_random_walk)if__name__=="__main__":gc.collect();gc.disable();BENCHMARKS[sys.argv[1]]();gc.enable()