I have more monitoring when I am in tabbed pve summary

[titof2375]

as you can see, when I am in PVE (porxmox) and that I go in summary. I have more curves and the date marks 1970.

 

[dcsapak]

do you mean the empty graphs? this can happen if the time on the server jumped (e.g into the future), can you check the syslog if there is something regarding rrd ?