DOMA / TPC Meeting

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WLCG DOMA meeting
Simone Campana
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    • 17:30 17:50
      Xrootd Protocol Update 20m
      Speaker: Wei Yang (SLAC National Accelerator Laboratory (US))

      Debugging some of the performance issue with big help from Andrea Manzi and Michal:

      • We likely need to increase the number of TPC processes allowed on each nodes (for Xrootd and DPM)
      • Michal will improve the error message to  help identify this problem in FTS logs.

      Albert was checking the dCache TPC Lite implementation, and perhaps making some minor fixes --- triggered SLAC Xrootd to check and fix a few hidden issues in TPC lite handling.

      Albert reported that EOS as destination fails to fetch file from SLAC, OU, RAL and dCache. 

      • Wei was not able to see the FTS log last week from NYU. Will check again.

      Not related to TPC: we are trying to understand how Xrootd client handles X509 proxy when it is renewed. This issue could show up in Xrootd forward proxy or Xcache.

      Stress test? 

    • 17:50 18:10
      HTTP Protocol Update 20m
      Speaker: Brian Paul Bockelman (University of Nebraska Lincoln (US))
    • 18:10 18:30
      Discussion 20m