Latest intr problems

Doug Barton dougb at FreeBSD.org
Sat Aug 21 00:03:42 UTC 2010


Here are the results of a vmstat -i, the old dtrace script, and Andriy's 
new one.

interrupt                          total       rate
irq1: atkbd0                       10420          1
irq9: acpi0                          111          0
irq14: ata0                       176564         26
irq17: wpi0                       105948         15
irq20: hpet0 uhci0+               858975        128
irq22: uhci2                       18972          2
cpu0:timer                       6655466        997
irq256: hdac0                         11          0
cpu1:timer                       6656559        997
Total                           14483026       2170



CPU     ID                    FUNCTION:NAME
   1      2                             :END kernel`loadav
            value  ------------- Distribution ------------- count
            16384 |                                         0
            32768 |@@@@@@@@@@@@@@@@@@@@@@@@@@@              2
            65536 |@@@@@@@@@@@@@                            1
           131072 |                                         0

0xc0b6bf30
            value  ------------- Distribution ------------- count
            65536 |                                         0
           131072 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1
           262144 |                                         0

kernel`ieee80211_node_timeout
            value  ------------- Distribution ------------- count
           131072 |                                         0
           262144 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1
           524288 |                                         0

kernel`ipport_tick
            value  ------------- Distribution ------------- count
              256 |                                         0
              512 |@@@@@                                    2
             1024 |@@@                                      1
             2048 |                                         0
             4096 |                                         0
             8192 |                                         0
            16384 |@@@@@@@@@@@                              4
            32768 |@@@@@                                    2
            65536 |@@@@@@@@@@@@@@@@                         6
           131072 |                                         0

0xc0b6a9d0
            value  ------------- Distribution ------------- count
              256 |                                         0
              512 |@@@                                      1
             1024 |@@@                                      1
             2048 |                                         0
             4096 |@@@                                      1
             8192 |                                         0
            16384 |@@@@@@@@@@@                              4
            32768 |@@@@@@@@@@@                              4
            65536 |@@@@@@@@                                 3
           131072 |@@@                                      1
           262144 |                                         0

kernel`kbdmux_kbd_intr_timo
            value  ------------- Distribution ------------- count
              512 |                                         0
             1024 |@@@@@                                    2
             2048 |@@@                                      1
             4096 |                                         0
             8192 |                                         0
            16384 |@@@@@@@@                                 3
            32768 |@@@@@@@@                                 3
            65536 |@@@@@@@@@@@@@@@@                         6
           131072 |                                         0

kernel`nd6_timer
            value  ------------- Distribution ------------- count
             1024 |                                         0
             2048 |@@@                                      1
             4096 |                                         0
             8192 |                                         0
            16384 |@@@@@                                    2
            32768 |@@@@@@@@                                 3
            65536 |@@@@@@@@@@@@@                            5
           131072 |@@@@@@@@@@@                              4
           262144 |                                         0

kernel`uma_timeout
            value  ------------- Distribution ------------- count
           524288 |                                         0
          1048576 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1
          2097152 |                                         0

kernel`usb_power_wdog
            value  ------------- Distribution ------------- count
             2048 |                                         0
             4096 |@@@                                      1
             8192 |                                         0
            16384 |                                         0
            32768 |@@@                                      1
            65536 |@@@@@@@@@@@@@@@                          6
           131072 |@@@@@@@@@@@@@                            5
           262144 |@@@@@@@@                                 3
           524288 |                                         0

kernel`uhci_root_intr
            value  ------------- Distribution ------------- count
             1024 |                                         0
             2048 |@@                                       3
             4096 |                                         0
             8192 |                                         0
            16384 |@@@                                      4
            32768 |@@@@@@@@@@@@@@@                          22
            65536 |@@@@@@@@@@@@@@@@@@@@                     30
           131072 |@                                        1
           262144 |                                         0

kernel`lim_cb
            value  ------------- Distribution ------------- count
              512 |                                         0
             1024 |@@@@                                     4
             2048 |@                                        1
             4096 |@                                        1
             8192 |                                         0
            16384 |@@@@                                     4
            32768 |@@@@@@@@@                                10
            65536 |@@@@@@@@@@@@                             13
           131072 |@@@@@@@@                                 9
           262144 |@@@                                      3
           524288 |                                         0

0xc7c975d0
            value  ------------- Distribution ------------- count
            16384 |                                         0
            32768 |@@@                                      1
            65536 |@@@@@@@@@@@                              4
           131072 |@@@                                      1
           262144 |@@@@@@@@@                                3
           524288 |@@@@@@@@@@@@@@                           5
          1048576 |                                         0

kernel`realtimer_expire
            value  ------------- Distribution ------------- count
            16384 |                                         0
            32768 |@@@@@                                    2
            65536 |@@@                                      1
           131072 |@@@@@@@@@@@@@                            5
           262144 |@@@@@                                    2
           524288 |@@@@@@@@@@@@@                            5
          1048576 |                                         0

kernel`pffasttimo
            value  ------------- Distribution ------------- count
              256 |                                         0
              512 |@                                        1
             1024 |@@                                       4
             2048 |@                                        2
             4096 |                                         0
             8192 |                                         0
            16384 |@@@@@                                    9
            32768 |@@@@@@@@@@                               18
            65536 |@@@@@@@@@@@@@@@                          28
           131072 |@@@@@@                                   12
           262144 |@                                        1
           524288 |                                         0

kernel`atkbd_timeout
            value  ------------- Distribution ------------- count
             1024 |                                         0
             2048 |@@                                       9
             4096 |                                         1
             8192 |                                         0
            16384 |@@@@                                     14
            32768 |@@@@@@@@@@@@@@                           53
            65536 |@@@@@@@@@@@@@@                           54
           131072 |@@@@                                     16
           262144 |@                                        2
           524288 |                                         0

kernel`logtimeout
            value  ------------- Distribution ------------- count
              256 |                                         0
              512 |@@@                                      5
             1024 |@                                        1
             2048 |@@                                       3
             4096 |@                                        2
             8192 |                                         0
            16384 |@@@@@@@@@@@@                             22
            32768 |@@@@@@@@                                 15
            65536 |@@@@@@@@@@@@@@                           26
           131072 |                                         0
           262144 |                                         0
           524288 |                                         0
          1048576 |                                         0
          2097152 |                                         0
          4194304 |                                         0
          8388608 |                                         0
         16777216 |@                                        1
         33554432 |                                         0

kernel`scrn_timer
            value  ------------- Distribution ------------- count
              256 |                                         0
              512 |@                                        9
             1024 |@@@                                      26
             2048 |                                         4
             4096 |                                         4
             8192 |                                         0
            16384 |@@@@@@@@                                 76
            32768 |@@@@@@@@@@                               89
            65536 |@@@@@@@@@@@@@                            118
           131072 |@@@@                                     35
           262144 |@                                        7
           524288 |                                         2
          1048576 |                                         0

kernel`pfslowtimo
            value  ------------- Distribution ------------- count
             2048 |                                         0
             4096 |@                                        1
             8192 |                                         0
            16384 |@                                        1
            32768 |@@@@                                     3
            65536 |@@@@@@@@@@@@                             9
           131072 |@@@@@@@@@@@@                             9
           262144 |@@@@@@@                                  5
           524288 |                                         0
          1048576 |                                         0
          2097152 |@                                        1
          4194304 |                                         0
          8388608 |                                         0
         16777216 |                                         0
         33554432 |@                                        1
         67108864 |                                         0

kernel`sleepq_timeout
            value  ------------- Distribution ------------- count
              256 |                                         0
              512 |@                                        7
             1024 |@@@                                      39
             2048 |@                                        16
             4096 |@                                        10
             8192 |                                         0
            16384 |@@@@@                                    61
            32768 |@@@@@@@@                                 90
            65536 |@@@@@@@@@@                               114
           131072 |@@@@@@@@@@@@                             138
           262144 |                                         1
           524288 |                                         1
          1048576 |                                         0
          2097152 |                                         0
          4194304 |                                         0
          8388608 |                                         0
         16777216 |                                         0
         33554432 |                                         1
         67108864 |                                         0

0xc7ca2f40
            value  ------------- Distribution ------------- count
              256 |                                         0
              512 |@@                                       81
             1024 |@@@                                      124
             2048 |                                         10
             4096 |@                                        43
             8192 |                                         0
            16384 |@@@@@@@                                  278
            32768 |@@@@@@@@@@                               420
            65536 |@@@@@@@@@@@@@@@                          604
           131072 |@                                        61
           262144 |                                         11
           524288 |                                         3
          1048576 |                                         0

kernel`tcp_isn_tick
            value  ------------- Distribution ------------- count
              128 |                                         0
              256 |                                         7
              512 |@@@                                      112
             1024 |@@@                                      99
             2048 |@@                                       85
             4096 |                                         16
             8192 |                                         0
            16384 |@@@@@@@@                                 286
            32768 |@@@@@@@@                                 305
            65536 |@@@@@@@@@@@@@@@                          540
           131072 |                                         13
           262144 |                                         4
           524288 |                                         3
          1048576 |                                         0
          2097152 |                                         0
          4194304 |                                         0
          8388608 |                                         0
         16777216 |                                         3
         33554432 |                                         0

kernel`ieee80211_node_timeout 1
kernel`uma_timeout 1
0xc0b6bf30 1
kernel`loadav 3
0xc7c975d0 14
kernel`kbdmux_kbd_intr_timo 15
kernel`realtimer_expire 15
kernel`ipport_tick 15
kernel`nd6_timer 15
0xc0b6a9d0 15
kernel`usb_power_wdog 16
kernel`pfslowtimo 30
kernel`lim_cb 45
kernel`uhci_root_intr 60
kernel`logtimeout 75
kernel`pffasttimo 75
kernel`atkbd_timeout 149
kernel`scrn_timer 370
kernel`sleepq_timeout 478
kernel`tcp_isn_tick 1473
0xc7ca2f40 1635



CPU     ID                    FUNCTION:NAME
   1      2                             :END 
***** CPU 0:

kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`timer2cb+0xb9
kernel`hpet_intr_single+0xed
kernel`hpet_intr+0x72
kernel`intr_event_handle+0x76
kernel`intr_execute_handlers+0x49
kernel`lapic_handle_intr+0x4c
kernel`0xc086a3e5
kernel`fork_exit+0xb8
kernel`0xc086a094
0


kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`timer2cb+0xb9
kernel`hpet_intr_single+0xed
kernel`hpet_intr+0x72
kernel`intr_event_handle+0x76
kernel`intr_execute_handlers+0x49
kernel`lapic_handle_intr+0x4c
kernel`0xc086a3e5
kernel`_mtx_unlock_spin_flags+0x10d
kernel`smp_rendezvous_cpus+0x174
0xc7caf7ff
0xc7cac249
kernel`devfs_ioctl_f+0x10b
kernel`kern_ioctl+0x1dd
kernel`ioctl+0x12f
kernel`syscallenter+0x280
kernel`syscall+0x34
kernel`0xc086a081
0


kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`timer2cb+0xb9
kernel`hpet_intr_single+0xed
kernel`hpet_intr+0x72
kernel`intr_event_handle+0x76
kernel`intr_execute_handlers+0x49
kernel`lapic_handle_intr+0x4c
kernel`0xc086a3e5
kernel`_mtx_unlock_spin_flags+0x10d
kernel`ioapic_enable_source+0x7c
kernel`ithread_loop+0x143
kernel`fork_exit+0xb8
kernel`0xc086a094
0


kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`timer2cb+0xb9
kernel`hpet_intr_single+0xed
kernel`hpet_intr+0x72
kernel`intr_event_handle+0x76
kernel`intr_execute_handlers+0x49
kernel`lapic_handle_intr+0x4c
kernel`0xc086a3e5
kernel`_mtx_unlock_spin_flags+0x10d
kernel`ithread_loop+0x1ff
kernel`fork_exit+0xb8
kernel`0xc086a094
11


kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`timer2cb+0xb9
kernel`hpet_intr_single+0xed
kernel`hpet_intr+0x72
kernel`intr_event_handle+0x76
kernel`intr_execute_handlers+0x49
kernel`lapic_handle_intr+0x4c
kernel`0xc086a3e5
kernel`cpu_idle_acpi+0x1b
kernel`cpu_idle+0x1b
kernel`sched_idletd+0x3c
kernel`fork_exit+0xb8
kernel`0xc086a094
87



***** CPU 1:

kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`statclockintr+0x73
kernel`ipi_bitmap_handler+0x54
kernel`0xc086a76f
kernel`_mtx_unlock_spin_flags+0x10d
kernel`ithread_loop+0x1ff
kernel`fork_exit+0xb8
kernel`0xc086a094
0


kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`statclockintr+0x73
kernel`ipi_bitmap_handler+0x54
kernel`0xc086a76f
kernel`ffs_sync+0x2b2
kernel`sync_fsync+0x18f
kernel`VOP_FSYNC_APV+0xda
kernel`sync_vnode+0x168
kernel`sched_sync+0x273
kernel`fork_exit+0xb8
kernel`0xc086a094
0


kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`statclockintr+0x73
kernel`ipi_bitmap_handler+0x54
kernel`0xc086a76f
0


kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`statclockintr+0x73
kernel`ipi_bitmap_handler+0x54
kernel`0xc086a76f
kernel`_mtx_unlock_spin_flags+0x10d
kernel`sched_idletd+0xa5
kernel`fork_exit+0xb8
kernel`0xc086a094
0


kernel`timer2clock+0x4d
kernel`statclockhandler+0x33
kernel`statclockintr+0x73
kernel`ipi_bitmap_handler+0x54
kernel`0xc086a76f
kernel`cpu_idle_acpi+0x1b
kernel`cpu_idle+0x1b
kernel`sched_idletd+0x3c
kernel`fork_exit+0xb8
kernel`0xc086a094
97



***** Top Processes:

        17   100064
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`__mnt_vnode_next+0x2f
               kernel`ffs_sync+0x2b2
               kernel`sync_fsync+0x18f
               kernel`VOP_FSYNC_APV+0xda
               kernel`sync_vnode+0x168
               kernel`sched_sync+0x273
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
     36475   100100
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
                 0
        10   100003
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        11   100006
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
               kernel`_mtx_unlock_spin_flags+0x10d
               kernel`callout_reset_on+0x1ca
               0xc7ca3076
               kernel`softclock+0x284
               kernel`intr_event_execute_handlers+0x125
               kernel`ithread_loop+0x9f
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        11   100007
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`_mtx_unlock_spin_flags+0x10d
               kernel`sleepq_timeout+0xe4
               kernel`softclock+0x284
               kernel`intr_event_execute_handlers+0x125
               kernel`ithread_loop+0x9f
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        17   100064
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
               kernel`ffs_sync+0x1db
               kernel`sync_fsync+0x18f
               kernel`VOP_FSYNC_APV+0xda
               kernel`sync_vnode+0x168
               kernel`sched_sync+0x273
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        17   100064
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`vfs_msync+0x205
               kernel`sync_fsync+0x17b
               kernel`VOP_FSYNC_APV+0xda
               kernel`sync_vnode+0x168
               kernel`sched_sync+0x273
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        17   100064
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`sync_fsync+0x17b
               kernel`VOP_FSYNC_APV+0xda
               kernel`sync_vnode+0x168
               kernel`sched_sync+0x273
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        11   100006
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
               kernel`_mtx_unlock_spin_flags+0x10d
               kernel`softclock+0x1bf
               kernel`intr_event_execute_handlers+0x125
               kernel`ithread_loop+0x9f
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        17   100064
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`ffs_sync+0x173
               kernel`sync_fsync+0x18f
               kernel`VOP_FSYNC_APV+0xda
               kernel`sync_vnode+0x168
               kernel`sched_sync+0x273
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        17   100064
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`vfs_msync+0x217
               kernel`sync_fsync+0x17b
               kernel`VOP_FSYNC_APV+0xda
               kernel`sync_vnode+0x168
               kernel`sched_sync+0x273
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        17   100064
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`vfs_msync+0x77
               kernel`sync_fsync+0x17b
               kernel`VOP_FSYNC_APV+0xda
               kernel`sync_vnode+0x168
               kernel`sched_sync+0x273
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
     36475   100100
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
               kernel`_mtx_unlock_spin_flags+0x10d
               kernel`smp_rendezvous_cpus+0x174
               0xc7caf7ff
               0xc7cac249
               kernel`devfs_ioctl_f+0x10b
               kernel`kern_ioctl+0x1dd
               kernel`ioctl+0x12f
               kernel`syscallenter+0x280
               kernel`syscall+0x34
               kernel`0xc086a081
                 0
     36475   100100
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
                 0
        17   100064
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`ffs_sync+0x2b2
               kernel`sync_fsync+0x18f
               kernel`VOP_FSYNC_APV+0xda
               kernel`sync_vnode+0x168
               kernel`sched_sync+0x273
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        10   100002
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`_mtx_unlock_spin_flags+0x10d
               kernel`sched_idletd+0xa5
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        11   100026
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
               kernel`_mtx_unlock_spin_flags+0x10d
               kernel`ioapic_enable_source+0x7c
               kernel`ithread_loop+0x143
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                 0
        11   100006
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
               kernel`_mtx_unlock_spin_flags+0x10d
               kernel`ithread_loop+0x1ff
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                11
        10   100003
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`timer2cb+0xb9
               kernel`hpet_intr_single+0xed
               kernel`hpet_intr+0x72
               kernel`intr_event_handle+0x76
               kernel`intr_execute_handlers+0x49
               kernel`lapic_handle_intr+0x4c
               kernel`0xc086a3e5
               kernel`cpu_idle_acpi+0x1b
               kernel`cpu_idle+0x1b
               kernel`sched_idletd+0x3c
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                87
        10   100002
               kernel`timer2clock+0x4d
               kernel`statclockhandler+0x33
               kernel`statclockintr+0x73
               kernel`ipi_bitmap_handler+0x54
               kernel`0xc086a76f
               kernel`cpu_idle_acpi+0x1b
               kernel`cpu_idle+0x1b
               kernel`sched_idletd+0x3c
               kernel`fork_exit+0xb8
               kernel`0xc086a094
                97




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