delta_hst
Purpose:
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Manage compressed history data for variables, detect changes based on tolerances and write to .hst files for diagnostics.
Enter:
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delta_hst [priority] &
Where:
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priority Optional. Specify an integer (0 to -12) to set the priority of the delta_split process or omit using this argument to accept the default.
Example:
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delta_hst 0 &
Notes:
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This process is normally started in the go script. It scans all real, integer, and logical variables in shared memory to determine if the values have changed and if that change exceeds the specified tolerance. If so, data is saved in a *.hst file in /data/compressed/.
The stored history data usually is retrieved to diagnose engine shutdown.