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Feature #24285

mgr: add module which displays current usage of file system (`fs top`)

Added by Patrick Donnelly over 1 year ago. Updated 8 months ago.

Status:
In Progress
Priority:
High
Assignee:
Venky Shankar
Category:
Performance/Resource Usage
Target version:
Ceph - v15.0.0
Start date:
Due date:
% Done:

0%

Source:
Development
Tags:
Backport:
Reviewed:
Affected Versions:
Component(FS):
Client, MDS, MDSMonitor, kceph, tools
Labels (FS):
task(intern), task(medium)
Pull request ID:

Description

It would ideally provide a list of sessions doing I/O, what kind of I/O, bandwidth of reads/writes, etc. Also the same information in aggregate form. The other metrics of general interest: caps outstanding, MDS cache size (broken down by type?), cache utilization/hits, client cache utilization (#26996), etc.

Related issues

Related to fs - Bug #24004: mds: curate priority of perf counters sent to mgr Resolved 05/03/2018
Related to fs - Feature #26996: cephfs: get capability cache hits by clients to provide introspection on effectiveness of client caching In Progress 08/21/2018
Related to fs - Feature #36253: cephfs: clients should send usage metadata to MDSs for administration/monitoring In Progress
Related to fs - Feature #41824: mds: aggregate subtree authorities for display in `fs top` New
Duplicated by fs - Bug #36252: cephfs: `ceph fs top` command Duplicate

History

#1 Updated by Patrick Donnelly over 1 year ago

  • Subject changed from mgr: add module which displays current usage of file system to mgr: add module which displays current usage of file system (`fs top`)
  • Category set to Performance/Resource Usage
  • Component(FS) MDS, MDSMonitor, tools added

#2 Updated by Patrick Donnelly over 1 year ago

  • Related to Bug #24004: mds: curate priority of perf counters sent to mgr added

#3 Updated by Patrick Donnelly about 1 year ago

  • Tracker changed from Support to Feature
  • Description updated (diff)
  • Start date deleted (05/25/2018)
  • Source set to Development
  • Component(FS) Client, kceph added

#4 Updated by Patrick Donnelly about 1 year ago

  • Duplicated by Bug #36252: cephfs: `ceph fs top` command added

#5 Updated by Patrick Donnelly about 1 year ago

  • Related to Feature #26996: cephfs: get capability cache hits by clients to provide introspection on effectiveness of client caching added

#6 Updated by Patrick Donnelly about 1 year ago

  • Related to Feature #36253: cephfs: clients should send usage metadata to MDSs for administration/monitoring added

#7 Updated by Patrick Donnelly 10 months ago

  • Status changed from New to In Progress
  • Assignee set to Venky Shankar

#8 Updated by Patrick Donnelly 8 months ago

  • Target version changed from v14.0.0 to v15.0.0

#9 Updated by Venky Shankar 8 months ago

for completeness, linking John's performance probes blueprint here, which is really interesting: https://tracker.ceph.com/projects/ceph/wiki/Live_Performance_Probes

#10 Updated by Patrick Donnelly 2 months ago

  • Related to Feature #41824: mds: aggregate subtree authorities for display in `fs top` added

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