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High CPU usage is noticed on httpsd and forticron daemons constantly, as shown below.
diagnose sys top 2 50
Run Time: 0 days, 16 hours and 15 minutes
62U, 0N, 12S, 26I, 0WA, 0HI, 0SI, 0ST; 1866T, 384F
forticron 3481 S 92.0 2.0 1
httpsd 3488 R 79.7 2.7 2
httpsd 3471 S 50.9 1.8 1
httpsd 3456 S 29.2 1.7 2
httpsd 3510 R 21.7 1.9 3
The following errors may be seen in the FortiCron debug outputs, although the application bandwidth widget is not enabled on the dashboard.
diagnose debug application forticron -1
diagnose debug enable
fcron_timer_func()-30: func-0x493509 from timer top_app_history takes too long time: 181 <<<<<<
fcron_timer_func()-23: Timer debug_logger fired
fcron_timer_func()-32: Timer debug_logger done
fcron_timer_func()-23: Timer sys_stats fired
fcron_timer_func()-32: Timer sys_stats done
fcron_timer_func()-23: Timer reset_but fired
fcron_timer_func()-32: Timer reset_but done
fcron_timer_func()-23: Timer systime_update fired
fcron_timer_func()-32: Timer systime_update done
fcron_timer_func()-23: Timer reset_diag_debu fired
fcron_timer_func()-32: Timer reset_diag_debu done
fcron_timer_func()-23: Timer traf_his fired
fcron_timer_func()-32: Timer traf_his done
fcron_timer_func()-23: Timer top_app_history fired
fcron_timer_func()-30: func-0x493509 from timer top_app_history takes too long time: 177 <-
diagnose sys mpstat 2
Gathering data, wait 2 sec, press any key to quit.
..0..1
TIME CPU %usr %nice %sys %iowait %irq %soft %steal %idle
12:31:45 PM all 21.04 0.00 3.84 0.00 0.00 0.37 0.00 74.75
0 11.39 0.00 2.97 0.00 0.00 0.00 0.00 85.64
1 14.85 0.00 1.98 0.00 0.00 0.00 0.00 83.17
2 26.24 0.00 5.94 0.00 0.00 0.99 0.00 66.83
3 31.68 0.00 4.46 0.00 0.00 0.50 0.00 63.37
Killing the httpsd and 'forticron' daemons does not resolve the issue.
This issue has been resolved in FortiOS versions 7.2.11, 7.4.8, and 7.6.3.
Logs required by FortiGate TAC for investigation.
diagnose sys top 2 99
diagnose debug application httpsd -1
diagnose debug application forticron -1
diagnose debug console timestamp enable
diagnose debug enable
Reproduce the issue.
diagnose debug disable
diagnose debug reset
diagnose sys traffic app-stats list
execute tac report
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