Meeting 2020-03-25


  • Brian
  • Derek
  • John
  • Shawn


Sending HTCondor data to both ES instances

  • Chicago ES is newer, and plans to use newer features (ILM)
  • This incompatible with ES on the older GRACC instance
  • Should the data go to tape? Est. around couple hundred MB/day
    • Consensus is yes!

ESnet data

  • Have access to SNMP (over 9022 interfaces)
  • Data: traffic (2 years); errors, discards (1 month)
  • Size: About 1GB/mo
  • Working on reviewing schema and moving into production
  • Don’t send to tape now. Wait until we’re ready to move to production.

Example use cases

  • U Waterloo writeup is complete
  • Purdue/FNAL, Madison, and throughput writeup is in progress
  • Make a recorded session
  • Convert into webpage, add to SAND website (John)

Tape replay

  • Going OK
  • Oct 2018 completed in 4.5 days, now sending Nov 2018
  • Write email of replay overview (John with Derek)
    • Why tape replay
    • What we changed and fixed
    • Wall clock time and how quickly we replayed


  • PhD student working on top-10 tables for alarms based on info and dashboards

XRootD TCP statistics

  • Andy recommended making a plugin
  • Will likely require quite a bit of plumbing (adding hooks in the right spot)