gernot@tintenfass:~# dtrace -n 'sched:::off-cpu { @[stack()]=count()}'
dtrace: description 'sched:::off-cpu ' matched 3 probes
^C


              unix`swtch_from_zombie+0x96
              genunix`lwp_exit+0x3cd
              genunix`syslwp_exit+0x22
              unix`_sys_sysenter_post_swapgs+0x149
                1

              unix`swtch+0x145
              genunix`cv_wait+0x61
              mac`mac_rx_srs_poll_ring+0xa0
              unix`thread_start+0x8
                1

              unix`swtch+0x145
              unix`preempt+0xd7
              genunix`post_syscall+0x651
              genunix`syscall_exit+0x59
              unix`0xfffffffffb800ec9
                1

              unix`swtch+0x145
              unix`preempt+0xd7
              unix`trap+0x1503
              unix`sys_rtt_common+0x68
              unix`_sys_rtt_ints_disabled+0x8
                1

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_reltimedwait+0x4f
              genunix`taskq_thread_wait+0x74
              genunix`taskq_d_thread+0x144
              unix`thread_start+0x8
                2

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_reltimedwait+0x4f
              idm`idm_wd_thread+0x1d7
              unix`thread_start+0x8
                2

              unix`swtch+0x145
              unix`preempt+0xd7
              genunix`post_syscall+0x651
              unix`0xfffffffffb800c91
                2

              unix`swtch+0x145
              genunix`cv_timedwait_sig_hires+0x1e9
              genunix`cv_waituntil_sig+0xba
              genunix`lwp_park+0x157
              genunix`syslwp_park+0x31
              unix`sys_syscall32+0xff
                3

              unix`swtch+0x145
              genunix`cv_wait+0x61
              zfs`txg_thread_wait+0x5f
              zfs`txg_sync_thread+0x1de
              unix`thread_start+0x8
                3

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_reltimedwait+0x4f
              scsi`scsi_watch_thread+0x330
              unix`thread_start+0x8
                3

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_timedwait+0x5a
              zfs`txg_thread_wait+0x7c
              zfs`txg_sync_thread+0x118
              unix`thread_start+0x8
                3

              unix`swtch+0x145
              genunix`cv_wait_sig_swap_core+0x174
              genunix`cv_wait_sig_swap+0x18
              genunix`cv_waituntil_sig+0x13c
              genunix`poll_common+0x47f
              genunix`pollsys+0xea
              unix`_sys_sysenter_post_swapgs+0x149
                3

              unix`swtch+0x145
              genunix`cv_wait+0x61
              zfs`txg_thread_wait+0x5f
              zfs`txg_quiesce_thread+0x94
              unix`thread_start+0x8
                6

              unix`swtch+0x145
              genunix`cv_wait+0x61
              genunix`fsflush+0x201
              unix`thread_start+0x8
                9

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_reltimedwait+0x4f
              smbsrv`smb_thread_continue_timedwait_locked+0x45
              smbsrv`smb_thread_continue_timedwait+0x3c
              smbsrv`smb_server_timers+0x5d
              smbsrv`smb_thread_entry_point+0x69
              unix`thread_start+0x8
                9

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_reltimedwait+0x4f
              genunix`seg_pasync_thread+0xcb
              unix`thread_start+0x8
                9

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_timedwait+0x5a
              zfs`l2arc_feed_thread+0xa1
              unix`thread_start+0x8
                9

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_timedwait+0x5a
              zfs`arc_reclaim_thread+0x13d
              unix`thread_start+0x8
                9

              unix`swtch+0x145
              genunix`cv_wait_sig_swap_core+0x174
              genunix`cv_wait_sig_swap+0x18
              genunix`sigsuspend+0x107
              unix`_sys_sysenter_post_swapgs+0x149
                9

              unix`swtch+0x145
              genunix`cv_timedwait_sig_hires+0x1e9
              genunix`cv_waituntil_sig+0xba
              genunix`lwp_park+0x157
              genunix`syslwp_park+0x31
              unix`_sys_sysenter_post_swapgs+0x149
               10

              unix`swtch+0x145
              genunix`cv_timedwait_sig_hires+0x1e9
              genunix`cv_waituntil_sig+0xba
              genunix`nanosleep+0x120
              unix`_sys_sysenter_post_swapgs+0x149
               10

              unix`swtch+0x145
              genunix`cv_wait_sig_swap_core+0x174
              genunix`cv_wait_sig_swap+0x18
              genunix`cv_waituntil_sig+0x13c
              genunix`poll_common+0x47f
              genunix`pollsys+0xea
              unix`sys_syscall+0x17a
               18

              unix`swtch+0x145
              genunix`cv_timedwait_sig_hires+0x1e9
              genunix`cv_waituntil_sig+0xba
              genunix`lwp_park+0x157
              genunix`syslwp_park+0x31
              unix`sys_syscall+0x17a
               19

              unix`swtch_to+0xe6
              unix`idle+0xb8
              unix`thread_start+0x8
               24

              unix`swtch+0x145
              genunix`cv_timedwait_sig_hires+0x1e9
              genunix`cv_waituntil_sig+0xba
              genunix`poll_common+0x47f
              genunix`pollsys+0xea
              unix`_sys_sysenter_post_swapgs+0x149
               25

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_reltimedwait+0x4f
              sata`sata_event_daemon+0xfe
              unix`thread_start+0x8
              182

              unix`swtch+0x145
              genunix`cv_timedwait_hires+0xe0
              genunix`cv_reltimedwait+0x4f
              stmf`stmf_svc_timeout+0x23a
              stmf`stmf_svc+0x129
              genunix`taskq_thread+0x285
              unix`thread_start+0x8
              453

              unix`swtch+0x145
              genunix`cv_wait+0x61
              genunix`taskq_thread_wait+0x84
              genunix`taskq_thread+0x308
              unix`thread_start+0x8
              690

              unix`swtch+0x145
              unix`idle+0xc4
              unix`thread_start+0x8
             1064