1.1. help

$  etcdctl check perf --help
NAME:
        check perf - Check the performance of the etcd cluster

USAGE:
        etcdctl check perf [options] [flags]

OPTIONS:
      --auto-compact[=false]            Compact storage with last revision after test is finished.
      --auto-defrag[=false]             Defragment storage after test is finished.
  -h, --help[=false]                    help for perf
      --load="s"                        The performance check's workload model. Accepted workloads: s(small), m(medium), l(large), xl(xLarge)
      --prefix="/etcdctl-check-perf/"   The prefix for writing the performance check's keys.