[summary] Re: Reasonable/sane limits for kern.msgbufsize?
Date: Thu, 08 Sep 2022 11:03:39 UTC
On Thu, Sep 01, 2022 at 04:36:44PM -0700, David Wolfskill wrote: > ... > How much trouble am I asking for if I set > > kern.msgbufsize=262144 > > in /boot/laoder.conf? > ... I received a couple of responses from folks who had increased kern.msgbufsize by a fair amount (to 204800 & 1MB, respectively) since several years ago, with no ill effects attributable to that. As I already had a shell script I use to control rebooting (e.g., whether or not to boot verbosely; from which slice to boot), I merely augmented that script so that if I'm requesting a verbose boot, I also set things up to increase kern.msgbufsize "appropriately" (and reset to default if I'm requesting a non-verbose boot). This is probably a bit conservative, but it seems to be working for me -- and /var/run/dmesg.boot gets the full boot log, even for a verbose boot, which was the intent. Ref. the (recent) "dmesg" links on https://www.catwhisker.org/~david/FreeBSD/history/, such as https://www.catwhisker.org/~david/FreeBSD/history/freebeast.14_dmesg.txt Peace, david -- David H. Wolfskill david@catwhisker.org "In my administration, I'm going to enforce all laws concerning the protection of classified information. No one will be above the law." -- D. Trump, August, 2016 See https://www.catwhisker.org/~david/publickey.gpg for my public key.