1rcutorture.onoff_interval=200 rcutorture.onoff_holdoff=30 2rcutree.gp_preinit_delay=12 3rcutree.gp_init_delay=3 4rcutree.gp_cleanup_delay=3 5rcutree.kthread_prio=2 6threadirqs 7rcutree.use_softirq=0 8