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Difference between revisions of "UM:Data Collection"
→How data collection works
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Every node can have many data collection items configured (see [[UM:Basic_Concepts|Basic Concepts]] for detailed description of DCI). NetXMS server has a set of threads dedicated to data collection, called ''Data Collectors'', used to gather information from the nodes according to DCI configuration. You can control how many data collectors will run simultaneously, by changing server configuration parameter ''NumberOfDataCollectors''. | Every node can have many data collection items configured (see [[UM:Basic_Concepts|Basic Concepts]] for detailed description of DCI). NetXMS server has a set of threads dedicated to data collection, called ''Data Collectors'', used to gather information from the nodes according to DCI configuration. You can control how many data collectors will run simultaneously, by changing server configuration parameter ''NumberOfDataCollectors''. | ||
All configured DCIs are checked for polling requirement every two seconds and if DCI needs to be polled, appropriate polling request is placed into internal data polling queue. First available data collector will pick up the request and gather information from the node according to DCI configuration. If a new value was received successfully, it's being stored in the database, and thresholds are checked. After threshold checking, data collector is ready for processing new request. Processing of a newly received parameter value is outlined on | All configured DCIs are checked for polling requirement every two seconds and if DCI needs to be polled, appropriate polling request is placed into internal data polling queue. First available data collector will pick up the request and gather information from the node according to DCI configuration. If a new value was received successfully, it's being stored in the database, and thresholds are checked. After threshold checking, data collector is ready for processing new request. Processing of a newly received parameter value is outlined on the figure below. | ||
[[File:Dci_param_proc.png|frame||left|alt=Newly received parameter processing|Newly received parameter processing]] | |||
[[File:Dci_param_proc.png|| | |||
= DCI configuration = | = DCI configuration = | ||