How to consider nodata as 0 in trigger expression ?

[Ignace_Frometon]

Hello there !

i try to configure a LLD trigger for a process CPU usage.
It should be triggered if the process uses more than 90% CPU for more than 6 hours.
i use this expression : min(/templatename/proc.cpuusage.[{#ID}],360m)>={$CPULIMITTRIGGER} and nodata(/templatename/proc.cpuusage.[{#ID}],360m)=0
The problem is : if the process is discovered with a cpu usage value over 90, the trigger fires immediatly. the item will have an empty history (wich is not null but empty) and only one value which is over 90 (exemple in joined screenshot).

how can i can set up a trigger expression that handles absences of values as 0 ?

[cyber]

But your trigger is designed to work, if you have only one value during that 6 hours... That nodata=0 does not give anything to it.. If you really want to consider, that there has been also enough checks, then use

...and count(/host/item,360m)>"your acceptable count of checks>"

[Ignace_Frometon]

Sir, you made my day. thank you so much.