有人能解释诸如backend_commit_duration和disk_wal_fsync_duration_seconds_bucket之类的etcd指标吗？
我在互联网上关注的链接很少（https://prometheus.io/docs/concepts/metric_types/），但无法正确理解？
例如下面的
：etcd_disk_backend_commit_duration_seconds_bucket{le="0.001"} 0
etcd_disk_backend_commit_duration_seconds_bucket{le="0.002"} 0
etcd_disk_backend_commit_duration_seconds_bucket{le="0.004"} 0
etcd_disk_backend_commit_duration_seconds_bucket{le="0.008"} 2.932845e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="0.016"} 6.009853e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="0.032"} 6.136721e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="0.064"} 6.162598e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="0.128"} 6.169403e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="0.256"} 6.176957e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="0.512"} 6.18052e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="1.024"} 6.183526e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="2.048"} 6.187813e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="4.096"} 6.188878e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="8.192"} 6.188947e+06
etcd_disk_backend_commit_duration_seconds_bucket{le="+Inf"} 6.188947e+06
etcd_disk_backend_commit_duration_seconds_sum 68566.30115698498
etcd_disk_backend_commit_duration_seconds_count 6.188947e+06
“ le”表示什么？是第100秒，第200秒，依此类推吗？