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A heuristic to use is that 2000 slots can be allocated per 8GB of RAM available on each Snaplex node. So for nodes with 16GB of RAM, use 4000 (the default setting) as the slot count.
Reserved slots (see below) are used when a Pipeline or validation is executed manually from SnapLogic Designer. If no slots are reserved, then these interactive Pipeline executions—Pipeline executions that run from the Designer for testing or validation purposes—can be blocked by long-running executions. You can adjust this setting based on your experience if the default value is not optimal. To reserve more slots for interactive sessions, set your value lower. If the Snaplex is not being used for interactive Pipeline building, set this value higher.
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