Date: Fri, 25 Feb 2000 16:05:47 -0600 From: "Jeffrey J. Mountin" <jeff-ml@mountin.net> To: Mike Smith <msmith@FreeBSD.ORG>, "Jordan K. Hubbard" <jkh@zippy.cdrom.com> Cc: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern init_main.c Message-ID: <3.0.3.32.20000225160547.00a26eb0@207.227.119.2> In-Reply-To: <200002252032.MAA00608@mass.cdrom.com> References: <Your message of "Fri, 25 Feb 2000 12:26:28 PST." <96552.951510388@zippy.cdrom.com>
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At 12:32 PM 2/25/00 -0800, Mike Smith wrote: >The syscons scrollback buffer is _not_ the kernel message buffer. >Syscons scrollback buffer is quite small (about 96 lines IIRC), while >the kernel message buffer is something like 8K by default. The syscons buffer is 100 lines (ROW * 4 and ROW = 25) according to sys/dev/syscons/(schistory.c|syscons.h). >Increasing the kernel message buffer will not give you more scrollback. >If you just want to increase the scrollback buffer, set SC_HISTORY_SIZE >to something obscenely large like 500 (memory penalty for all vtys) or >alternatively set MSGBUF_SIZE to something like 32K (only eats that much >more memory) and add the ability to view it inside sysinstall. The kernel message does not show everying that the scrollback will either. Like what happens beforehand. IMO, the buffer should be increased for both the install and as a default. With -stable it has been of sufficent size, but with 4.0 I need to increase the value so that I could scroll back and view the *entire* output. Bumping the SC_HISTORY_SIZE to 200 would be sufficent. Maybe 250 for GENERIC, but I haven't tried this. MSGBUF_SIZE appears fine, but doubling it wouldn't hurt. my .02 Jeff Mountin - jeff@mountin.net Systems/Network Administrator FreeBSD - the power to serve To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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