Date: Sun, 25 Nov 2012 12:09:26 +0100 From: Lars Engels <lars.engels@0x20.net> To: Ian Smith <smithi@nimnet.asn.au> Cc: freebsd-stable@freebsd.org Subject: Re: Increasing the DMESG buffer.... Message-ID: <20121125110926.GY96846@e-new.0x20.net> In-Reply-To: <20121125165737.V21191@sola.nimnet.asn.au> References: <CAJ-Vmonk2RS=FwpgVHpeuFF5jf%2BSjE2Hv8kOFBrDCkv-=hTYSg@mail.gmail.com> <20121122213328.J21191@sola.nimnet.asn.au> <50AE36FF.7080106@FreeBSD.org> <CAJ-Vmo=UOTu0KG6yHjZ_gBB4HGSGNJOAhn3HT-8gNsh_=ih7Yg@mail.gmail.com> <CAN6yY1v1AdhgqQfONbDAEueU2wnFZDO8GvegRzq10y0yoj8kDg@mail.gmail.com> <20121122224906.GE88593@in-addr.com> <CAN6yY1sK3U=18ovFYPAViuMxTDCm2qZ-msLmM7Zgymx=u6ga4w@mail.gmail.com> <20121123150719.M21191@sola.nimnet.asn.au> <1ab82c79bc6d72fdaa90e7ed0c794f5f@mail.0x20.net> <20121125165737.V21191@sola.nimnet.asn.au>
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--p1CTWWYPX4x7uy/s Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Nov 25, 2012 at 05:20:52PM +1100, Ian Smith wrote: > On Fri, 23 Nov 2012 11:33:21 +0100, Lars Engels wrote: > > Am 23.11.2012 05:50, schrieb Ian Smith: > > > On Thu, 22 Nov 2012 16:20:52 -0800, Kevin Oberman wrote: > [..] > > > > >> Also, isn't the entire verbose boot captured in /var/run/dmesg? > > > > > > > > > > Only if the message buffer hasn't overflowed before the utility= runs > > > to > > > > > populate the file > > > > > > > > Ouch! I did miss hte obvious. Thanks for pointing this out. > > >=20 > > > I've noticed quite a few truncated verbose dmesgs posted over the la= st > > > couple of years, sometimes frustratingly starting after important st= uff > > > like the CPU info or ACPI tables etc .. Lars presumably had increased > > > his buffer size to capture 85k, which would be well less than Adrian= 's > > > suggested 64k with more minimal hda + pcm logging. Perhaps a debug.= snd. > > > or something tunable could reenable the higher verbosity if/when nee= ded? > >=20 > >=20 > > No, I was creating the dmesg on a vanilla FreeBSD 10-CURRENT kernel an= d the > > other one on PC-BSD 9.1-RCsomething. >=20 > Well that's interesting, excuse my assumption. But as downloaded: > -rw-r--r-- 1 smithi smithi 82415 Nov 22 14:08 T61_dmesg.boot.10.wor= ks >=20 > So is the default msgbufsize on 10 different to what mav@ just posted? >=20 > > kern.msgbufsize=3D"65536" # Set size of kernel message buffer >=20 > And if the PC-BSD 9.1-RCsomething one you refer to is: > http://bsd-geek.de/FreeBSD/T61_dmesg.boot.9.works >=20 > then that's only 37844 bytes and has most of its head missing, in fact=20 > starting only a screenful before the hda stuff that's most of the rest. IIRC I just uploaded /var/run/dmesg.boot --p1CTWWYPX4x7uy/s Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlCx/GYACgkQKc512sD3afibAwCffQTMwjdtrBNgdryRSTtQBh6l oUYAoKiESnMPTv08ttqCie8wnB+0yOHl =9QMK -----END PGP SIGNATURE----- --p1CTWWYPX4x7uy/s--
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