I am looking for any materials which can help me to track and
troubleshoot performance of my cluster, and particulary rados gateway.
I am using command "ceph daemon 'daemon-name' perf dump", and in
summary getting a ridiculous count of various metrics, but where i can
find their description ? I found some poor description on redhat.com
but it is not enough, for good comprehension. Could someone help me found any additional materials or share own experience ? For example what does mean op_laggy, osd_laggy, linger_* and etc not obvious metrics? How to troubleshoot when values is bad ?
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