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Dependent item with "Simple change" preprocessing does not get negative

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  • Jochen
    Junior Member
    • Nov 2017
    • 1

    #1

    Dependent item with "Simple change" preprocessing does not get negative

    Hi Zabbix community,

    I have a problem with a dependent item:
    My base item collects a simple JMS queue length, in the dependent item I would like to store the variation. So I added a preprocessing with "Simple change". However, the dependent item does not get negative values when the base item decreases its value - only positive values are stored.
    I use "Numeric (float)" as "Type of information" so negative values should be stored.

    Base item and dependent items are configured in a template.

    What is wrong here?

    I am using Zabbix 3.4.4.
    Last edited by Jochen; 17-11-2017, 11:30.
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