CPU load prediction

[cbyepez]

Hi , I have created the following item to predict CPU load for the next 30 days :


It works fine but only provides real-time results and not in the “future”. I need it to display on a graph the value for 30 days ahead. I tried using a last function last(/TGPRDRCPP/CPU_USE_FORECAST_TEST,#1,30d) but I'm getting the following error:



Any ideas on how to solve this will be appreciated.

[rallybat]

Hi,

Have you tried this formula?
last(/TGPRDRCPP/CPU_USE_FORECAST_TEST, 30d)

[cbyepez]

Hi,

Have you tried this formula?
last(/TGPRDRCPP/CPU_USE_FORECAST_TEST, 30d)

Yes , I tried but didn't work

[cyber]

last(/TGPRDRCPP/CPU_USE_FORECAST_TEST,#1,30d) is wrong as you can see in docs ..

[B]last[/B] (/host/key,<#num<:time shift>>)

, you cannot add second parameter there.. you can have time shift... #1:30d, last value 30d ago...
same story with last(/host/key, 30d) ... last accepts #num (optional) - the Nth most recent value and not the 30d as parameter.

[cbyepez]

last(/TGPRDRCPP/CPU_USE_FORECAST_TEST,#1,30d) is wrong as you can see in docs ..

[B]last[/B] (/host/key,<#num<:time shift>>)

, you cannot add second parameter there.. you can have time shift... #1:30d, last value 30d ago...
same story with last(/host/key, 30d) ... last accepts #num (optional) - the Nth most recent value and not the 30d as parameter.

I appreciate your answer, how can I use the time shift argument in the last function, such as predicting on a graph the behavior that the CPU will have 30 minutes in the future?


Something similar to this function used in version 4.0 but I still can't find its equivalent in version 6.4 so that it allows me to graph the future behavior

[cyber]

in v4 last(anything, #1,30m) in v6.4 last(/host/item,#1:30m)

Timeshifts are explained here... https://www.zabbix.com/documentation/current/en/manual/config/triggers/expression

For forecast ... hmm .. forecast(/host/item,30d:now/d+1d,30d) maybe.. I have never needed to use forecast..

Last is a bit different function as it deals with a single value from a row of values (last, second to last, last one 1 day ago etc..) It will not return whole range.

[cbyepez]

in v4 last(anything, #1,30m) in v6.4 last(/host/item,#1:30m)

Timeshifts are explained here... https://www.zabbix.com/documentation/current/en/manual/config/triggers/expression

For forecast ... hmm .. forecast(/host/item,30d:now/d+1d,30d) maybe.. I have never needed to use forecast..

Last is a bit different function as it deals with a single value from a row of values (last, second to last, last one 1 day ago etc..) It will not return whole range.

I appreciate your answer , last(/host/item,#1:30m) didn't work.