Samples: 239K of event 'cpu-clock', Event count (approx.): 59992000000
  Children      Self  Command         Shared Object          Symbol
-   98.63%    98.53%  Xorg            libpixman-1.so.0.33.6  [.] sse2_blt.part.0
   - sse2_blt.part.0
      - 0.10% xen_hvm_callback_vector
           xen_evtchn_do_upcall
           irq_exit
           __do_softirq
           run_timer_softirq
           call_timer_fn
           rh_timer_func
         - usb_hcd_poll_rh_status
            - 0.10% uhci_hub_status_data
                 _raw_spin_unlock_irqrestore
              0.00% mod_timer
      - 0.00% retint_user
           prepare_exit_to_usermode
           exit_to_usermode_loop
           schedule
           __schedule
           finish_task_switch
+    0.57%     0.00%  Xorg            [kernel.kallsyms]      [k] entry_SYSCALL_64_fastpath
+    0.51%     0.00%  Xorg            libc-2.23.so           [.] __GI___ioctl
+    0.51%     0.00%  Xorg            [kernel.kallsyms]      [k] sys_ioctl
+    0.51%     0.00%  swapper         [kernel.kallsyms]      [k] rest_init
+    0.51%     0.00%  swapper         [kernel.kallsyms]      [k] start_kernel
+    0.51%     0.00%  swapper         [kernel.kallsyms]      [k] x86_64_start_reservations
+    0.51%     0.00%  swapper         [kernel.kallsyms]      [k] x86_64_start_kernel
+    0.50%     0.00%  swapper         [kernel.kallsyms]      [k] cpu_startup_entry
+    0.50%     0.00%  Xorg            [kernel.kallsyms]      [k] do_vfs_ioctl