# sysctl -a | grep shm                                                                                                        
kern.ipc.sysvshm = 1
kern.ipc.shmmax = 41156608
kern.ipc.shmmni = 4096
kern.ipc.shmseg = 4096
kern.ipc.shmmaxpgs = 10048
kern.ipc.shm_use_phys = 1