numeric sort looks really odd. Here's the output of readprofile | sort -n

   105 _spin_unlock_irq                          15.0000
   108 cache_alloc_debugcheck_after               0.3673
   108 schedule                                   0.0400
    10 avc_audit                                  0.0042
    10 copy_files                                 0.0159
    10 do_sync_read                               0.0426
    11 process_backlog                            0.0430
   125 kfree                                      1.0331
    12 dbg_redzone2                               0.2553
    12 generic_fillattr                           0.0800
    12 permission                                 0.0779
   135 *unknown*
    13 add_to_page_cache                          0.0872
    13 cond_compute_av                            0.1171
   140 find_get_page                              2.1875
   140 _raw_spin_lock                             1.4286
  1436 buffered_rmqueue                           3.1840
    14 avc_has_perm                               0.2029

etc..