Date: Mon, 21 Mar 2005 17:26:52 -0800 From: Andrew Robinson <andrewr@uidaho.edu> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-questions@freebsd.org Subject: Re: Increasing system message buffer size Message-ID: <c116d5c0bb2f.c0bb2fc116d5@uidaho.edu>
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Thanks Dan! Andrew ----- Original Message ----- From: Dan Nelson <dnelson@allantgroup.com> Date: Monday, March 21, 2005 3:56 pm Subject: Re: Increasing system message buffer size > In the last episode (Mar 21), Andrew Robinson said: > > I'm working on a problem that would benefit from verbose logging of > > the boot process. Unfortunately my logging is SO verbose that it > > fills up the available system buffer. I'm trying to figure out how > > to change the buffer size. I'm on 5.3 Stable. > > > > It looks like one way to do it might be to recompile the kernel, > with > > > > options MSGBUF_SIZE=65536 > > > > set. Is that the best way? If so, what is the default size of the > > buffer? I checked NOTES in /usr/src/sys/i386/conf but couldn't find > > any reference to it. > > Yes, that's the only way to do it. It might be possible to convert it > into a tunable (which would let you set it in /boot/loader.conf), > but I > don't know how early in the boot process tunables are available. The > default is 32768 (see /sys/sys/msbguf.h). > > -- > Dan Nelson > dnelson@allantgroup.com >
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