A program to monitor the load of individual processes, the availability of machines?

Question

Software testing

Some kind of free product is needed to monitor some parameters during long-term tests, as well as in everyday use.
It is best that all this be written to some kind of database and it would be possible to get data for a certain period of time.
What you need to monitor for all machines
Is the machine available (over the network)
The load on the CPU, memory, network -
general only for a specific process. Ideally, if the node installed on the machine saw that this process was rising and would start monitoring it.
If she is also able to build charts for the selected period, she will not be able to build prices at all.

Answer 1

it is clear that it is not a lot of heavy. But Zabbix and Zabbix agent will deploy the completeness of information to you at the output