The sysstat service resets various I/O and CPU
performance statistics to zero in order to begin counting from a fresh state
at boot time.
The sysstat
service can be disabled with the following command:
$ sudo systemctl mask --now sysstat.service
By default the sysstat service runs a program at boot to reset performance statistics. This data can be retrieved using programs such as sar and sadc. While the sysstat service may provide useful insight into system operation, through the lens of providing only essential system services, this service should be disabled.