Cisco ASR 14000 Series Management Command Reference page 520

Process and Memory Management Commands on Cisco IOS XR Software
follow
C i s c o C o n f i d e n t i a l - B e t a R e v i e w R 3 . 7. 1
trace_back: #3 0xfc0ffa70 [event_dispatch]
trace_back: #4 0xfc0ffc2c [event_block]
trace_back: #5 0x4821e978 [<N/A>]
ENDOFSTACKTRACE
Current process = "pkg/bin/lpts_pa", PID = 57433 TID = 3
trace_back: #0 0xfc1106dc [MsgReceivev]
trace_back: #1 0xfc0fc840 [msg_receivev]
trace_back: #2 0xfc0fc64c [msg_receive]
trace_back: #3 0xfc0ffa70 [event_dispatch]
trace_back: #4 0xfc0ffc2c [event_block]
trace_back: #5 0x482064c4 [<N/A>]
ENDOFSTACKTRACE
The following example shows how to use the follow command to debug the chain of threads blocking
thread 2 associated with the process assigned PID 139406:
RP/0/RP0/CPU0:router# follow process 139406 blocked iteration 1 stackonly thread 2
Attaching to process pid = 139406 (pkg/bin/lpts_fm)
Iteration 1 of 1
------------------------------
Current process = "pkg/bin/lpts_fm", PID = 139406 TID = 2
trace_back: #0 0xfc110744 [MsgSendv]
trace_back: #1 0xfc0fbf04 [msg_sendv]
trace_back: #2 0xfc0fbbd8 [msg_send]
trace_back: #3 0xfcec7580 [pa_fm_close]
trace_back: #4 0xfcec78b0 [pa_fm_process_0]
ENDOFSTACKTRACE
REPLY (node node0_RP1_CPU0, pid 57433)
No specific TID, following all threads of 57433 (pkg/bin/lpts_pa)
-----------------------------------------------------------------
Current process = "pkg/bin/lpts_pa", PID = 57433 TID = 1
trace_back: #0 0xfc1106dc [MsgReceivev]
trace_back: #1 0xfc0fc840 [msg_receivev]
trace_back: #2 0xfc0fc64c [msg_receive]
trace_back: #3 0xfc0ffa70 [event_dispatch]
trace_back: #4 0xfc0ffc2c [event_block]
trace_back: #5 0x48201904 [<N/A>]
trace_back: #6 0x48201e3c [<N/A>]
ENDOFSTACKTRACE
Current process = "pkg/bin/lpts_pa", PID = 57433 TID = 2
trace_back: #0 0xfc1106dc [MsgReceivev]
trace_back: #1 0xfc0fc840 [msg_receivev]
trace_back: #2 0xfc0fc64c [msg_receive]
trace_back: #3 0xfc0ffa70 [event_dispatch]
trace_back: #4 0xfc0ffc2c [event_block]
trace_back: #5 0x4821e978 [<N/A>]
ENDOFSTACKTRACE
Cisco ASR 14000 Series Router System Management Command Reference
SMR-518
OL-17231-01