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LHCOPN Dashboard casper.grid.sara.nl

LHCOPN Dashboard http:// casper.grid.sara.nl. Sander Boele (sanderb@sara.nl) & David Horat (david.horat@cern.ch). SARA Reken- en Netwerkdiensten. Sander Boele - Network Innovation | February 11 2011. Based on perfSONAR Hades. NTP synchronized server at each T1 site

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LHCOPN Dashboard casper.grid.sara.nl

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  1. LHCOPN Dashboardhttp://casper.grid.sara.nl Sander Boele (sanderb@sara.nl) & David Horat (david.horat@cern.ch) SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

  2. Based on perfSONAR Hades • NTP synchronized server at each T1 site • 9 UDP packets to each other site measuring one-way delay • Statistics calculated by HADES on 9 OWD’s are summary stats: • Minimum delay • Median delay (if > 15% status becomes “degraded”) • Maximum delay • Min ipdv (Instantaneous Packet Delay Variation (jitter)) • Med ipdv • Max ipdv • Duplicates (# packets duplicated, never seen non zero) • Loss (#packets lost 0-8) (if > 2% status becomes critical) • Sync (yes or no) SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

  3. Dashboard prototype • Create a dashboard based on one-way delay measurements • 15% deviation from baseline is degraded • Packetloss is critical • Aggregate this data and also show historical data SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

  4. Architecture SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

  5. What other parameters? • Take NTP status of HADES into account (FNAL and BNL have no GPS) • Per site thresholds for degraded status • Compare traceroute, hopcount • More than one screen? Less intelligence, more data • BGP status? • GGUS connection? • Bandwidth monitoring? • Jitter? SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

  6. What others do Take a Nagios plugin that reads perfSONAR measurement data and applies logic SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

  7. What others do (2)at Atlas T2’s in the US SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

  8. What others do (3) SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

  9. What other parameters? SARA Reken- en Netwerkdiensten Sander Boele - Network Innovation | February 11 2011

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