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Date:      Tue, 24 Oct 2023 15:02:23 +0800
From:      Zhenlei Huang <zlei@FreeBSD.org>
To:        Dewayne Geraghty <dewaynegeraghty@gmail.com>
Cc:        FreeBSD CURRENT <freebsd-current@freebsd.org>
Subject:   Re: git: 9d6eb30abb29 - stable/12 - x86: Add sysctl flag CTLFLAG_TUN to loader tunables
Message-ID:  <63DACEBA-7639-4636-A8E6-7E2F2A548D4E@FreeBSD.org>
In-Reply-To: <77C10E9A-3A80-4EAC-8E7E-575BDA373929@FreeBSD.org>
References:  <202310120510.39C5AxkS071422@gitrepo.freebsd.org> <CAGnMC6rB6SyRY0f5Bt9V%2BtTf5YSz_PD1Xc8qoVNTY4Hox53BgA@mail.gmail.com> <77C10E9A-3A80-4EAC-8E7E-575BDA373929@FreeBSD.org>

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> On Oct 12, 2023, at 5:40 PM, Zhenlei Huang <zlei@FreeBSD.org> wrote:
>=20
>=20
>=20
>> On Oct 12, 2023, at 3:37 PM, Dewayne Geraghty =
<dewaynegeraghty@gmail.com> wrote:
>>=20
>> Thank-you so much for attending to AND correcting some of the weird =
anomalies.  Perhaps one day we can rely upon sysctl -aT and sysctl -aW =
to be meaningful again.
>> On 12.4S,=20
>> A=3D`sysctl -a|wc -l`; T=3D`sysctl -aT|wc -l`; W=3D`sysctl -aW|wc =
-l`; O=3D`sysctl -ao|wc -l`;printf =
"Loadable=3D%d\tWriteable=3D%d\tStatistical=3D%d\tOpaque=3D%d\n" $T $W =
$(($A - $T - $W)) $(($O - $A))
>> Loadable=3D533    Writeable=3D1347  Statistical=3D2560        =
Opaque=3D50
>>=20
>> Kind regards, Dewayne.
>> PS I'll refrain from mentioning the need for meaningful descriptions =
that provide a sense of how something can be "tuned".
>>=20
>>=20
>=20
>=20
> There're really too too many tunables to check, I'm currently mainly =
focusing on platform independent part.

Done!

>=20
> The next should be tier 1 , then tier 2.

Done!

Also note kib@ pointed out that there're some tunables for field =
debugging only, not much useful to expose them as sysctl MIBs.=20

>=20
> There're also many tunables in device drivers, there will be trouble =
to check and fix them all as I believe a runtime test is mandatory=20
> but that is basically impossible. Hope there're only little to be =
fixed.

I'm going to fix bugs related to net stack, and these are left =
unchanged.  I'd glad to do if they are strongly demanded.

>=20
> Best regards,
> Zhenlei
>=20





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