Unable to reproduce with an earlier, in-house build of smokeping_prober 0.3.1 (prior to first debian upload):
# HELP smokeping_response_duration_seconds A histogram of latencies for ping responses. # TYPE smokeping_response_duration_seconds histogram smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="5e-05"} 474 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0001"} 67789 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0002"} 72798 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0004"} 72861 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0008"} 72917 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0016"} 72938 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0032"} 72949 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0064"} 72966 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0128"} 72973 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0256"} 72978 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.0512"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.1024"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.2048"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.4096"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="0.8192"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="1.6384"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="3.2768"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="6.5536"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="13.1072"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="26.2144"} 72979 smokeping_response_duration_seconds_bucket{host="127.0.0.1",ip="127.0.0.1",le="+Inf"} 72979 smokeping_response_duration_seconds_sum{host="127.0.0.1",ip="127.0.0.1"} 6.126716514000115 smokeping_response_duration_seconds_count{host="127.0.0.1",ip="127.0.0.1"} 72979 According to the go.mod for smokeping_prober v0.3.1, it was presumably built with github.com/sparrc/go-ping v0.0.0-20190613174326-4e5b6552494c (which predates the go-ping project moving to a new organization in github). So despite the fact that the currently open github issues suggest that the bug is not yet resolved upstream, it is also beginning to smell like a regression in go-ping, somewhere between v0.0.0-20190613174326-4e5b6552494c and v0.0.0-20210312.d90f377.