Data Logger: Difference between revisions

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(The midas documentation has moved to https://midas.triumf.ca/docs/)
 
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The midas documentation has moved. See [https://midas.triumf.ca/docs/develop/features/storing_data/data_logging/ Data logging: overview] for the new documentation about the data logger.
<div style="column-count:4;-moz-column-count:4;-webkit-column-count:4">
* [[/Logger ODB tree]]
* [[mlogger]]
* [[/Lazy ODB tree]]
* [[Lazylogger]]
</div>
 
 
 
The Midas [[mlogger|data logger]] serves multiple purposes related to data logging.
# On the fly data compression (if required)
# Log experimental data to storage device'''[[Event_Filtering|(s)]]'''
# Handles the overall Midas '''[[Message_System|System messages]]''' logging
# Collect and log the '''[[History System|history events]]'''
# Can log special information to an external '''[[Logging to a mySQL database|mySQL]]''' database
 
The data logger configuration is available in the ODB. Please refer to '''[[/Logger ODB tree]]''' for full feature descriptions.
 
The actual application handling this Data logging is the '''[[mlogger]]'''. It is intended to run on the backend computer (on the same node where the event buffers reside) for fast data access (no network involved).
 
 
'''Note:''' There is a '''[[Lazylogger|Data Archiver]]''' application which provide a copy or move of the logger data. The destination being usually a remote location holding a large data storage, tape robot, etc... The reason for such secondary logger is to off-load the local disk or decouple the '''[[mlogger|Data Logger]]''' application from possibly slow storage device.
 
[[Category:Data Logging]]

Latest revision as of 22:00, 30 October 2026

The midas documentation has moved. See Data logging: overview for the new documentation about the data logger.

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