Too much CPU

[tuttle]

I have a single-node k3s cluster running on Debian 10, which is a KVM guest. When I start rkubelog from quay.io/solarwinds/rkubelog:r19rc2, the top shows this:

  PID  PPID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
  516     1 root      20   0 1389540 675600  91012 S 105.1  16.7 188:53.56 k3s-server
  559   516 root      20   0  825884 138232  72760 S  20.3   3.4  21:10.84 containerd
24547 24408 1001      20   0  730104  33336  18148 S   8.5   0.8   0:43.75 rkubelog

The CPU is constantly very high, loadavg rises to 6 or 7, even when there are exactly two messages per minute sent to Papertrail. When I delete the rkubelog Deployment, the CPU drops down.

I only set PAPERTRAIL_PROTOCOL=tls, PAPERTRAIL_HOST=..., PAPERTRAIL_PORT=number env vars.

Is there a known cause, please?