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Feature #9299

open

mds: improve cache lru

Added by Sage Weil over 9 years ago. Updated almost 8 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
Performance/Resource Usage
Target version:
-
% Done:

0%

Source:
Development
Tags:
Backport:
Reviewed:
Affected Versions:
Component(FS):
MDS
Labels (FS):
Pull request ID:

Description

it appears to be very easy for a single task/client to push everything out of the cache. we have a stratified lru, but it only has two levels (top and bottom). I wonder if we need an N-layer LRU so that inodes/dentries that are repeatedly hit are hard to push out of the cache.

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