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Date:      Sun, 29 Apr 2001 17:40:02 -0700 (PDT)
From:      Bruce Evans <bde@zeta.org.au>
To:        freebsd-bugs@FreeBSD.org
Subject:   Re: bin/26746: dmesg only prints the last couple of lines of the message  buffer
Message-ID:  <200104300040.f3U0e2h89208@freefall.freebsd.org>

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The following reply was made to PR bin/26746; it has been noted by GNATS.

From: Bruce Evans <bde@zeta.org.au>
To: Trond Davidsen <trond.davidsen@ii.uib.no>
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: bin/26746: dmesg only prints the last couple of lines of the
 message  buffer
Date: Mon, 30 Apr 2001 10:36:45 +1000 (EST)

 On Sun, 29 Apr 2001, Trond Davidsen wrote:
 
 >  dmesg -a gives the expected output (~450 lines).  But I can't see
 >  anything in the man page that explains why I get only ~3 lines when I
 >  use dmesg without any commandline options.
 
 Maybe there is on 3 lines left after removing the extras printed by -a.
 
 ISTR seeing this behaviour while using dmesg in single user mode.  This
 seemed to be caused by the message buffer filling up and either the
 internal wrap-around not working or dmesg not understanding the wrap-
 around.
 
 Bruce
 

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