cephfs-top − Ceph Filesystem Top Utility
cephfs−top [flags]
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.
−−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
chit |
cap hit rate |
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dlease |
dentry lease rate |
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ofiles |
number of opened files |
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oicaps |
number of pinned caps |
oinodes
number of opened inodes
rtio |
total size of read IOs |
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wtio |
total size of write IOs |
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raio |
average size of read IOs |
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waio |
average size of write IOs |
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rsp |
speed of read IOs compared with the last refresh |
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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 |
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.
ceph(8), ceph−mds(8)
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