SignalK nodejs 100% CPU one core on boot but ok after systemctl restart signalk

[mgrouch]

SignalK NMEA XDR parser plugin CPU spin at 100% one core.

With extensive BBN XDR Plugin sentences config

[mgrouch]

Actually it gets weirder. Simple restart of SignalK (without disabling XDR plugin) seems fixes issues.
Without changes to config. So maybe there is no issue with XDR plugin. Maybe issue somewhere else

[mgrouch]

SignalK nodejs 100% CPU one core on boot but ok after systemctl restart signalk

[mgrouch]

Seems only happens if BBN Sensors Hub is plugged into USB,
regardless of whethere connection to it is defined in signalk or not (strange).
Maybe it doesn't like 115200 baud rate somehow messing it's serial libraries?

There was issue serialport/node-serialport#402
and this one node-red/node-red#1633

and

serialport/node-serialport#1460

[mgrouch]

Seems nodejs issue. Reproducible on BBN Lite and Full

Might be:

serialport/node-serialport#2659

[mgrouch]

Plugging esp32 via powered USB hub (instead of directly to pi) seems solves the issue.