RP/0/RP0/CPU0:R3#show ospf trace spf | include Begin SPF
Tue Sep 22 11:43:07.693 UTC
21   Sep 22 11:20:40.492  ospf_run_spf: Begin SPF
52   Sep 22 11:20:51.047  ospf_run_spf: Begin SPF
83   Sep 22 11:20:56.291  ospf_run_spf: Begin SPF
114  Sep 22 11:21:01.665  ospf_run_spf: Begin SPF
142  Sep 22 11:21:01.716  ospf_run_spf: Begin SPF
171  Sep 22 11:21:01.916  ospf_run_spf: Begin SPF
209  Sep 22 11:23:26.839  ospf_run_spf: Begin SPF
237  Sep 22 11:23:26.889  ospf_run_spf: Begin SPF
266  Sep 22 11:23:27.089  ospf_run_spf: Begin SPF
304  Sep 22 11:23:27.093  ospf_run_spf: Begin SPF
332  Sep 22 11:23:27.510  ospf_run_spf: Begin SPF
362  Sep 22 11:30:55.119  ospf_run_spf: Begin SPF
389  Sep 22 11:30:55.170  ospf_run_spf: Begin SPF
419  Sep 22 11:30:55.211  ospf_run_spf: Begin SPF
449  Sep 22 11:31:02.018  ospf_run_spf: Begin SPF
480  Sep 22 11:37:47.193  ospf_run_spf: Begin SPF
RP/0/RP0/CPU0:R3#show ospf trace errors
Tue Sep 22 11:43:08.447 UTC

Traces for OSPF 1 (Tue Sep 22 11:43:09)
Traces returned/requested/available:  3/8192/3
Trace buffer: errors

1    Sep 22 11:20:40.101  ospf_nsr_ev_free: Cannot free event 0x90d36fc0: flags 0x0,work 0x629ea35553c0, handler 0x629e69ef602e
2    Sep 22 11:20:40.101  ospf_nsr_ev_free:   inst 0x0, nsr_info 0x0, next 0x0
3    Sep 22 11:20:40.194  ospf_is_config_startup_done: Reading config startup done tuple failed [errno 0x40818600: 'sysdb' detected the 'warning' condition 'A SysDB client tried to access a nonexistent item or list an empty directory']