Re: pkg upgrade, vfs.zfs.arc.free_target, vfs.zfs.arc.sys_free (was: CFT: pkgbase support in 15.0)

Reply: Graham Perrin : "Re: pkg upgrade, vfs.zfs.arc.free_target, vfs.zfs.arc.sys_free"
In reply to: Graham Perrin : "pkg upgrade, vfs.zfs.arc.free_target, vfs.zfs.arc.sys_free (was: CFT: pkgbase support in 15.0)"
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From: Mark Millard <marklmi_at_yahoo.com>
Date: Sat, 30 Aug 2025 15:50:03 UTC

On Aug 29, 2025, at 19:46, Graham Perrin <grahamperrin@gmail.com> wrote:
> 
> <https://lists.freebsd.org/archives/freebsd-pkgbase/2025-May/000543.html>
> 
> On 30/05/2025 17:02, Mark Millard wrote:
> 
>> … Did you do any tuning of the ZFS-in-use examples
> 
> Recent test results, with a VirtualBox snapshot of:
> 
> - FreeBSD 14.3-RELEASE-p2, AMD64, 525 packages from FreeBSD-base
> 
> - x11/kde, x11/sddm, x11/xorg,and ten others from FreeBSD-ports

Your pictured count of non-base "prime-origins" indicates
11 of them.

> - all packages cached – pkg upgrade -fFqy, repeatedly.
> 
> 
> pkg upgrade -fUy
> 
> a) failed at least once with 12 GB memory without tuning
> 
> b) succeeded at least once with 13 GB without tuning
> 
> c) succeeded at least twice with 2 GB, ARC tuned.
> 
> 
> Failure (a): <https://i.imgur.com/YKhwv8O.png>

That shows, in part (warning: the text extraction may
have inaccuracies):

QUOTE
[3156/3246] Installing webkit2-gtk_40-2.46.6_1...
[3156/3246] Extracting webkit2-gtk_40-2.46.6_1: 100%
Child process pid=895 terminated: Killed
. . .
root@pkg:~ # pkg prime-origins | grep -u base | we -1
      11
. . .
END QUOTE

Without the list of 11, it messy for anyone else
to (approximately) replicate the consequence
list of (around) 3246 for independent testing of
such via a close match --or, alternately, that
include at least those (and possibly more from
an existing environment).

> Temporarily set before (c):
> 
> sysctl vfs.zfs.arc.free_target=256000
> 
> 
> Success here means _not_ encountering:
> 
>> Child process … terminated abnormally: Killed
> 
> – with /var/log/messages showing the pkg context:
> 
>> killed: failed to reclaim memory
> 
> ----
> 
> I can not compare with 15.0-PRERELEASE until after completion of p9652f95ce8e4_sb45a181a74c main-amd64 on beefy18, <https://pkg-status.freebsd.org/beefy18/build.html?mastername=main-amd64-default&build=p9652f95ce8e4_sb45a181a74c>. 
> 
> Comparison with 15.0-ALPHA1 will be more meaningful.
> 
> Not yet tested: vfs.zfs.arc.sys_free in lieu of vfs.zfs.arc.free_target



===
Mark Millard
marklmi at yahoo.com