"perf:system:cpu_busy_60percent:breached" means system cpu is more then 60% during specific time interval.
"perf:system:cpu_busy_60percent:normal" mean system cpu is below than 60% during specific time interval
EXP:
If you set a threshold on particular object with below values
counter: system:cpu_busy
threshold interval: 5 min
threshold value: 60
If object cpu_busy is continuously above than 60% for 5 min that mean threshold is breached and "perf:system:cpu_busy_60percent:breached" error event will be generated.
DFM keep on checking cpu_busy and if cpu_busy is continuously less than 60% for 5min then "perf:system:cpu_busy_60percent:normal" normal event will be generated
Regards,
Gireesh