You can check the timestamps in the log and the timestamp of the statistic file that is being processed at that time. They should be as close as possible, indicating the STV is processing current stats data.
To read the timestamps in the STV log files, complete the following steps:
Open to the
/var/log/STVfolder in the MGR/STV.
The stv_collector file will show the logs for collecting files process
The stv_db_import file will show files importation into database logs.
Every import action will generate lines like the following, with the timestamps set in UTC format:
2020/01/10 03:37:14 (delta_counter 2/8)
(INFO): group sys_processes, device 728, span 5m, ts 2020-01-10 03:30:00,
When checking the log and the timestamp, if you see the STV is processing old stuff, the graphs will fall behind.