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Feature #58550
closedFeature #58488: mds: avoid encoding srnode for each ancestor in an EMetaBlob log event
mds: add perf counter to track (relatively) larger log events
Status:
Resolved
Priority:
Normal
Assignee:
Category:
Administration/Usability
Target version:
% Done:
0%
Source:
Development
Tags:
Backport:
Reviewed:
Description
Logging of large (in size) subtreemap over and over again in the log segment is a well know scalability limiting factor in the MDS. Its a bit hard to infer this though when a cluster starts experiencing slowness. Moreover, there might be other places where a large log event size could be making things worse. Adding a perf counter that increments whenever the log event size exceeds a certain threshold might help is inferring the extent of logging large log events over and over again.
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