Data Aging - Euthanasia

1
Data Aging - Euthanasia

• Bob Dalesio

2
Data Management - Channel Data

• Allow recovery of unused data space
• Allow selective delete of channels
• Allow selective delete of time ranges
• Allow winnowing of data
• by dates
• keeping statistics
• preserving only every Nth sample
• Provide operator supplied notes for data

3
Data Management - Set Data

• Allow selective delete of channels
• Allow selective delete of time ranges
• Allow editing of values
• Provide operator supplied notes for data

4
Conclusion

• Bob Dalesio

5
Status of Prototyping Efforts Channel Based

• Frequency archiving supporting up to 10K samples
  per second on a SPARC 10 available for beta test
• Archive viewer for frequency data available for
  beta test - plot of 4 channels with 1K samples
  each in under 4 seconds
• Data management only recovers unused disk space
• New requirements and feedback on prototypes
  needed from users
• Integrated with XARR data viewer from JLab

6
Status of Prototyping Effort Set Based

• Save set archive engine saving up to 5K samples
  (synchronous from a 10 Hz set of channels)
• 5K samples take 2 seconds to collect and write to
  disk
• Access for viewer and creation of restore and
  reboot files Not Yet Implemented

7
Development Efforts

• Data taking engines being developed at LANL,
  graphical engine for UNIX developed at JLAB
• Archive record operational at DESY - buffer
  server?
• Prototypes of the frequency archiver are running
  at JLAB
• PC based archive viewers being prototyped at LANL
• Client/server access to the archive data being
  developed at JLAB
• Distributed data taking viewer being developed at
  JLAB