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kern/openzfs: Regulate the ZFS ARC pruning process precisely. (stable/13)
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Authored by seigo.tanimura_gmail.com on Mar 1 2024, 5:36 PM.
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Details

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Summary

This fix essentially eliminates the high CPU usage caused by the ARC pruning
thread, acknowledged by FreeBSD-EN-23:18.openzfs.

  • Key Features
  • Accounting of the ZFS vnodes in use. (v_usecount > 0)
  • Recycling of the ZFS vnodes with the precise target.
  • Acceleration of the ZFS vnode recycling by the ARC eviction waiters.

PR: 275594
Reported By: Thomas Mueller <thmu7@freenet.de>
Security: FreeBSD-EN-23:18.openzfs
Signed-off-by: Seigo Tanimura <seigo.tanimura@gmail.com>

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 56979
Build 53867: arc lint + arc unit

Event Timeline

seigo.tanimura_gmail.com retitled this revision from kern/openzfs: Regulate the ZFS ARC pruning process precisely. to kern/openzfs: Regulate the ZFS ARC pruning process precisely. (stable/13).Mar 1 2024, 5:58 PM