Date: Sat, 24 Nov 2012 22:10:29 -0800 From: perryh@pluto.rain.com To: mav@freebsd.org Cc: adrian@freebsd.org, freebsd-stable@freebsd.org, smithi@nimnet.asn.au, avg@icyb.net.ua, wjw@digiware.nl, ronald-freebsd8@klop.yi.org Subject: Re: Increasing the DMESG buffer.... Message-ID: <50b1b655.VxCS9jNpfM3zCF/x%perryh@pluto.rain.com> In-Reply-To: <50B18CB9.8040701@FreeBSD.org> References: <50AD0E82.3070706@digiware.nl> <20121121194142.8c4bf7d1977f13801a021ccc@getmail.no> <op.wn4141f88527sy@212-182-167-131.ip.telfort.nl> <CAJ-VmomREO6uj_izmD%2Bp90cFn=AQcz7UbZNkX8PVnU5mG_8ufQ@mail.gmail.com> <20121122144400.M21191@sola.nimnet.asn.au> <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> <50B155E9.3010505@digiware.nl> <CAJ-VmonkgKjkd2KNZcQ4g54uHQg2e4OvvKOWo2L30sn8bxmP7A@mail.gmail.com> <50B18CB9.8040701@FreeBSD.org>
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Alexander Motin <mav@freebsd.org> wrote: > On 25.11.2012 01:43, Adrian Chadd wrote: > > I'm surprised it's not tunable via a kenv variable at boottime.. > > It is tunable. AFAIR that is it: > kern.msgbufsize="65536" # Set size of kernel message buffer Yep. That tunable is available in 8.2 (not 8.1), and I think in all 9.x; dunno if it was ever MFC'd to the 7.x branch. I was going to suggest adding a mention in the docs where verbose boot is described, but the only verbose boot mention I found is in Handbook 13.4.1, "Kernel Boot Flags", which doesn't seem like a particularly good place to get into tunables.
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