erik.vonreis@LIGO.ORG - posted 10:50, Thursday 03 September 2026 - last comment - 16:35, Friday 04 September 2026(91797)
DAQ DC ethernet stats are being dumped to help search for cause of CRC errors
h1daqdc0 and h1daqdc1 "ethtool -S" stats are being dumped hourly for the DAQ lan interface. Purpose is to gather evidence for the cause of somewhat rare CRC errors (really dropped data blocks) from the real-time system DAQ streams.
Location of the files is /opt/rtcds/userapps/release/cds/common/scripts/daq_eth_stats/archive
The stats gathering services are named daq_eth_stats and are hand-written systemd service and timer units on both systems.
After several dropped data blocks on DAQ leg one, no error stats on the interfaces changed. Stat collection has been stopped.