CEPHFS-TOP(8)

NAME
cephfs-top - Ceph Filesystem Top Utility

SYNOPSIS
cephfs-top [flags]

DESCRIPTION

cephfs-top provides top(1) like functionality for Ceph Filesystem. Various client metrics are displayed and updated in realtime.

Ceph Metadata Servers periodically send client metrics to Ceph Manager. Stats plugin in Ceph Manager provides an interface to fetch these metrics.

OPTIONS

--cluster
    Cluster: Ceph cluster to connect. Defaults to ceph.

--id
    Id: Client used to connect to Ceph cluster. Defaults to fstop.

--selftest
    Perform a selftest. This mode performs a sanity check of stats module.

--conffile [CONFFILE]
    Path to cluster configuration file

-d [DELAY], --delay [DELAY]
    Refresh interval in seconds (default: 1)

--dump
    Dump the metrics to stdout

--dumpfs <fs_name>
    Dump the metrics of the given filesystem to stdout

DESCRIPTIONS OF FIELDS

chit
    cap hit rate

dlease
    dentry lease rate

ofiles
    number of opened files

oicaps
    number of pinned caps

oinodes
    number of opened inodes

rtio
    total size of read IOs

wtio
    total size of write IOs

raio
    average size of read IOs

waio
    average size of write IOs

rsp speed of read IOs compared with the last refresh

wsp speed of write IOs compared with the last refresh

rlatavg
    average read latency

rlatsd
    standard deviation (variance) for read latency

wlatavg
    average write latency

wlatsd
    standard deviation (variance) for write latency

mlatavg
    average metadata latency

mlatsd
    standard deviation (variance) for metadata latency

AVAILABILITY

cephfs-top is part of Ceph, a massively scalable, open-source, distributed storage system. Please refer to the Ceph documentation at <http://ceph.com/> for more information.

SEE ALSO

ceph <>(8), ceph-mds <>(8)

Copyright
2010-2014, Inktank Storage, Inc. and contributors. Licensed under Creative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)