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Support #5971

Incorporate control of the Linux system fsync calls into the system

Added by Kurt Biery over 5 years ago. Updated over 2 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
Known Issues
Target version:
-
Start date:
04/21/2014
Due date:
05/30/2014
% Done:

0%

Estimated time:
32.00 h
Experiment:
Co-Assignees:
Duration: 40

Description

As we discovered in ds50daq, the ROOT package calls the fsync Linux system call when it closes a file (https://cdcvs.fnal.gov/redmine/projects/artdaq/wiki/DarkSide-50_disk_writing_lessons). For performance reasons, we would like to skip this call in artdaq.

The purpose of this Issue is to request that the we work with the ROOT and art teams to determine the best way to provide configurable control of whether fsync is called, and to modify that artdaq code so that the standard configuration within artdaq is to avoid this call.


Related issues

Related to ds50daq - Feature #4810: Investigate why we get backpressure of more than 5 seconds at LNGSClosed10/21/201304/25/2014

History

#1 Updated by Eric Flumerfelt over 2 years ago

Related to #13657.

#2 Updated by Eric Flumerfelt over 2 years ago

  • Category set to Known Issues
  • Target version deleted (575)


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