Date: Thu, 30 Oct 2014 04:24:46 -0400 From: "O'Connor, Daniel" <Daniel.O'Connor@emc.com> To: Steven Hartland <killing@multiplay.co.uk> Cc: FreeBSD Current <freebsd-current@freebsd.org>, Ed Maste <emaste@freebsd.org>, Steve Kargl <sgk@troutmask.apl.washington.edu> Subject: Re: HEADS UP: Standalone kernel debug files moving out of /boot/kernel/ Message-ID: <076D8745-53C6-4AFE-86D3-FF9B94F4EC76@emc.com> In-Reply-To: <5451A843.90805@multiplay.co.uk> References: <CAPyFy2APVUxpAztmWY-ux7gUZ7B8Qk65CLHV_fVYmxsazKgCPg@mail.gmail.com> <54511A7E.1020307@multiplay.co.uk> <CAPyFy2Bw9JH4w0iZ5hj2R1Ga9T4BZn_Z-8UBJ-jT6tmO%2Bi8VeA@mail.gmail.com> <20141030023224.GA42236@troutmask.apl.washington.edu> <5451A843.90805@multiplay.co.uk>
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On 30 Oct 2014, at 13:23, Steven Hartland <killing@multiplay.co.uk> wrote:
> Making things harder to manage vs saving a little bit of space on the=20
> root partition really doesn't sound like a good idea; especially when=20
> with the ZFS install, which I would suggest is becoming the norm, the=20
> root partition doesn't suffer from space issues anyway.
Note that it=92s not =93a little bit=94 of space.
[freebsd10 8:21] /boot/kernel >ll kernel *.ko| awk '{i +=3D $5} END {print =
$5}'
49312
[freebsd10 8:21] /boot/kernel >ll *.symbols | awk '{i +=3D $5} END {print $=
5}=92
212464
i.e. the debug information is more than 4x larger than the code its for (!)=
.
I agree managing the symbol files does become significantly more difficult =
in this case but the patch makes quite a substantial difference to the numb=
er of kernels you can keep in / (especially on older installs which have <1=
GB roots).
Perhaps there could be a flag to disable it just for the kernel that could =
be put into /etc/make.conf? That way it=92s set and forget if you are kerne=
l juggling.
Regards,
Daniel O=92Connor
Senior Software Engineer
Isilon Platforms Team
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