Graph Discontinuity issue

[MMourad]

Hi All;

I am having an issue that the graph is barely drawing (I have attached snapshot below), I am using a script to match on specific values from files comes from nodes via sftp and represent these values in the graph;

I checked for a network issues between nodes and cacti, but found none, and files are there in normal way
I checked cacti.log, and found that there are values normally with no failures of timeouts
I checked the rrd file using "rrdtool fetch xxx.rrd LAST" and found a lot of nan values
I checked other graphs, and found that all normal SNMP graphs are drawing normally, almost all the graphs that are using scripts are facing the same issue

Can you please support me in this

Best Regards;
MM

[MMourad]

Anyone can help pleaasee

[phalek]

Increase your logging and check your script running time. They may be taking a bit too long to complete.