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Feature #1759

Periodic refreshing of histogram files

Added by Mark Messier about 8 years ago. Updated almost 2 years ago.

Status:
Accepted
Priority:
Normal
Assignee:
-
Category:
I/O
Target version:
-
Start date:
09/01/2011
Due date:
09/30/2013
% Done:

0%

Estimated time:
40.00 h
Scope:
Internal
Experiment:
NOvA
SSI Package:
art
Duration: 761

Description

I am working on software to perform online monitoring of data from our DAQ through a data dispatcher. This job will connect to the dispatcher stream and process events indefinitely (ideally if the job never crashed it could be started once in the lifetime of the experiment). However, I would like this job to periodically close its histogram file, reset all the histograms in memory (although could easily be accomplished in user code), and open a new file. This would occur, say, at subrun boundaries. As I understand it, in the current framework, the histogram files are only closed at the endJob stage and there is no provision for starting a fresh file.


Related issues

Related to art - Feature #1758: Histograms in shared memoryClosed09/01/2011

Related to art - Bug #1340: Allow creation of subdirectories with TFileServiceClosed06/04/2011

Related to art - Feature #1316: Snapshot histogram fileFeedback05/19/2011

History

#1 Updated by Walter E Brown almost 8 years ago

  • Category set to I/O
  • Status changed from New to Accepted

Should be considered in context of the intended TFileService review.

#2 Updated by Christopher Green about 6 years ago

  • Due date set to 09/30/2013
  • Target version set to 1.09.00
  • Estimated time set to 40.00 h
  • Scope set to Internal
  • Experiment NOvA added
  • SSI Package art added

#3 Updated by Christopher Green over 5 years ago

  • Target version changed from 1.09.00 to 521

#4 Updated by Kyle Knoepfel almost 3 years ago

Is NOvA still interested in this feature?

#5 Updated by Kyle Knoepfel almost 2 years ago

  • Target version deleted (521)


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