Hello Subscriber, Thursday, January 19, 2017, 4:44:04 PM, you wrote: > Hello Gianluca, > Wednesday, January 18, 2017, 3:54:15 PM, you wrote: >> In the mean time, if you have not disabled it, you should find some >> collected statistics from sysstat/sar. >> Look at the sarXX files under /var/log/sa. They should be kept for 30 day >> by default in CentOS 7. > Unfortunately, on that host such statistics is disabled. But I collect such statistics in Zabbix. And the numbers and graphs indicate an increase in the load on the CPU (ie System time).