Bug 229035 - ZFS tuning info in handbook is out of date
Summary: ZFS tuning info in handbook is out of date
Status: Closed FIXED
Alias: None
Product: Documentation
Classification: Unclassified
Component: Books & Articles (show other bugs)
Version: Latest
Hardware: Any Any
: --- Affects Only Me
Assignee: freebsd-doc (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-06-15 04:33 UTC by Shane
Modified: 2018-06-17 01:50 UTC (History)
1 user (show)

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Description Shane 2018-06-15 04:33:06 UTC 
In 19.6.1 of the handbook it says "vfs.zfs.arc_max...This value can only be adjusted at boot time..."

This tunable has been dynamically adjustable since Jul 2016 which applies to 10.4 and 11.x

base r302714 for stable/10 with stable/11 being available from initial creation.

vfs.zfs.arc_max, vfs.zfs.arc_min and vfs.zfs.arc_meta_limit can now be adjusted with sysctl(8) while vfs.zfs.vdev.cache.size is now the only(?) tunable left to set at boot time.
Comment 1 Allan Jude freebsd_committer freebsd_triage 2018-06-15 04:54:22 UTC 
I thought I fixed that in January 2017, but it seems I never actually did it. Sorry.
Comment 2 Allan Jude freebsd_committer freebsd_triage 2018-06-15 04:54:28 UTC 
https://reviews.freebsd.org/D9311
Comment 3 commit-hook freebsd_committer freebsd_triage 2018-06-17 01:49:15 UTC 
A commit references this bug:

Author: allanjude
Date: Sun Jun 17 01:48:19 UTC 2018
New revision: 51852
URL: https://svnweb.freebsd.org/changeset/doc/51852

Log:
  ZFS Handbook: vfs.zfs.arc_max and arc_min are adjustable at runtime

  This has been the case since FreeBSD 11

  PR:		229035
  Reported by:	cperciva
  Reviewed by:	bcr, wblock (previous version)
  Sponsored by:	Klara Systems
  Differential Revision:	https://reviews.freebsd.org/D9311

Changes:
  head/en_US.ISO8859-1/books/handbook/zfs/chapter.xml