$ bin/fluent-bit -i cpu -o nats -V -f 5
* Copyright (C) 2019-2020 The Fluent Bit Authors
* Copyright (C) 2015-2018 Treasure Data
* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
[2016/03/04 10:17:33] [ info] Configuration
[2016/03/04 10:17:33] [ info] starting engine
cpu[all] all=3.250000 user=2.500000 system=0.750000
cpu[i=0] all=3.000000 user=1.000000 system=2.000000
cpu[i=1] all=3.000000 user=2.000000 system=1.000000
cpu[i=2] all=2.000000 user=2.000000 system=0.000000
cpu[i=3] all=6.000000 user=5.000000 system=1.000000
[2016/03/04 10:17:33] [debug] [in_cpu] CPU 3.25%