https://sourceware.org/bugzilla/show_bug.cgi?id=31265
Bug ID: 31265
Summary: improve cache retention logic to prefer small /
frequent / slow files
Product: elfutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: debuginfod
Assignee: unassigned at sourceware dot org
Reporter: fche at redhat dot com
CC: elfutils-devel at sourceware dot org
Target Milestone: ---
In light of https://bugzilla.redhat.com/show_bug.cgi?id=1970578 still being
open, we should probably tweak the server side caching to add a measure of
cost/time to the retention logic. Ditch LRU, add some retention scoring that
prefers to keep vdso.* stuff that takes 60s to extract, and yet is regularly
requested.
The resulting formula might need to be heuristic or statistical in nature. It
should probably avoid retaining very slow/large but rare files (kernel images).
It should probably favour -similar- files (vdso's from different package
versions) even before usage counts.
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