We have had a significant increase in network (GGUS) tickets opened recently.  See https://twiki.cern.ch/twiki/bin/view/LCG/NetworkTransferMetrics#Network_Performance_Incidents

• These were correlated with more I/O aggressive ATLAS workflows
• Good result: improved communication about how to handle network issue, involving DDM and ADC and network GGUS support unit

Last week as the annual perfSONAR face-to-face developers meeting.   Discussed lots of upcoming work areas.  Slides not yet accessible but will provide a link when ready.

Upgrades to perfSONAR toolkit instances continuing.   Better coverage and less problems since 4.1.2 was released.  4.1.3 is set for release next week and should incorporate a couple more small fixes for things we have seen.