RP/0/RP0/CPU0:R2#show ospf trace spf | include Begin SPF
Tue Sep 22 11:36:24.260 UTC
21   Sep 22 11:20:27.064  ospf_run_spf: Begin SPF
52   Sep 22 11:20:35.471  ospf_run_spf: Begin SPF
83   Sep 22 11:20:40.614  ospf_run_spf: Begin SPF
114  Sep 22 11:21:00.094  ospf_run_spf: Begin SPF
142  Sep 22 11:21:00.146  ospf_run_spf: Begin SPF
177  Sep 22 11:21:00.347  ospf_run_spf: Begin SPF
214  Sep 22 11:21:02.125  ospf_run_spf: Begin SPF
244  Sep 22 11:23:26.828  ospf_run_spf: Begin SPF
271  Sep 22 11:23:26.879  ospf_run_spf: Begin SPF
300  Sep 22 11:23:27.079  ospf_run_spf: Begin SPF
337  Sep 22 11:23:27.504  ospf_run_spf: Begin SPF
367  Sep 22 11:30:55.161  ospf_run_spf: Begin SPF
398  Sep 22 11:31:01.997  ospf_run_spf: Begin SPF
425  Sep 22 11:31:02.046  ospf_run_spf: Begin SPF
455  Sep 22 11:31:02.074  ospf_run_spf: Begin SPF
RP/0/RP0/CPU0:R2#show ospf trace errors
Tue Sep 22 11:36:24.965 UTC

Traces for OSPF 1 (Tue Sep 22 11:36:25)
Traces returned/requested/available:  3/8192/3
Trace buffer: errors

1    Sep 22 11:20:26.735  ospf_nsr_ev_free: Cannot free event 0x77d00fc0: flags 0x0,work 0x5aff9313f9c0, handler 0x5aff5e97602e
2    Sep 22 11:20:26.735  ospf_nsr_ev_free:   inst 0x0, nsr_info 0x0, next 0x0
3    Sep 22 11:20:26.825  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']