1CEPHFS-TOP(8)                        Ceph                        CEPHFS-TOP(8)
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NAME

6       cephfs-top - Ceph Filesystem Top Utility
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SYNOPSIS

9       cephfs-top [flags]
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DESCRIPTION

13       cephfs-top  provides  top(1)  like  functionality  for Ceph Filesystem.
14       Various client metrics are displayed and updated in realtime.
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16       Ceph Metadata Servers periodically send client metrics to Ceph Manager.
17       Stats  plugin in Ceph Manager provides an interface to fetch these met‐
18       rics.
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OPTIONS

21       --cluster
22              Cluster: Ceph cluster to connect. Defaults to ceph.
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24       --id   Id: Client used to connect to Ceph cluster. Defaults to fstop.
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26       --selftest
27              Perform a selftest. This mode performs a sanity check  of  stats
28              module.
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DESCRIPTIONS OF FIELDS

31       chit   cap hit rate
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33       dlease dentry lease rate
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35       ofiles number of opened files
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37       oicaps number of pinned caps
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39       oinodes
40              number of opened inodes
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42       rtio   total size of read IOs
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44       wtio   total size of write IOs
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46       raio   average size of read IOs
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48       waio   average size of write IOs
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50       rsp    speed of read IOs compared with the last refresh
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52       wsp    speed of write IOs compared with the last refresh
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54       rlatavg
55              average read latency
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57       rlatsd standard deviation (variance) for read latency
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59       wlatavg
60              average write latency
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62       wlatsd standard deviation (variance) for write latency
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64       mlatavg
65              average metadata latency
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67       mlatsd standard deviation (variance) for metadata latency
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AVAILABILITY

70       cephfs-top is part of Ceph, a massively scalable, open-source, distrib‐
71       uted  storage  system.  Please  refer  to  the  Ceph  documentation  at
72       http://ceph.com/ for more information.
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SEE ALSO

75       ceph(8), ceph-mds(8)
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78       2010-2022,  Inktank Storage, Inc. and contributors. Licensed under Cre‐
79       ative Commons Attribution Share Alike 3.0 (CC-BY-SA-3.0)
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84dev                              Oct 18, 2022                    CEPHFS-TOP(8)
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