Y-axis maximum is less than the collected maximum, it's wired.

[jstamj]

In first picture, the Y-axis maximum is 0.8%, but the maximum data that zabbix collected is 3.13%.(my language is chinese). The 2nd picture has the same problem.
I am using "Template OS Linux", in its graph settings, "Y axis MAX value" is "Calculated", not "Fixed".
I have a switch, and that one is using "Template Module Interfaces SNMPv2", it also have the same problem.

[kloczek]

All probably because you graphs data series function is "avg" instead of "all"

[jstamj]

you are really genuis! thank you very much, I have solved this problem!