Re: weird console output

so. shouldn't this be in CURRENT?

Gary Jennejohn schrieb am 2009-03-21:
> On Sat, 21 Mar 2009 14:52:59 -0400
> Chuck Robey <chuckr_at_telenix.org> wrote:

> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1

> > Gary Jennejohn wrote:
> > > On Fri, 20 Mar 2009 20:49:08 -0400
> > > Justin Hibbits <jrh29_at_alumni.cwru.edu> wrote:

> > >> On Sat, Mar 21, 2009 at 01:02:25AM +0100, Alexander Best wrote:
> > >>> very often when i boot or shutdown my pc i see weird text being
> > >>> output to the
> > >>> console. to me it seems like 2 messages are being mixed into 1
> > >>> message. here's
> > >>> an example:

> > >>> "WcAdR0N IaNtG : aWtIaT1N EbSuSs  o0p ttiaorng eetn a1b lleudn,
> > >>> 0e
> > >>> xcpde0c:t  r<eHdLu-cDeTd- SpTe rDfVoDrRmAaMn cGeS.A-
> > >>> H1W0ANR NJILN1G: DIAG2N>O SRTeImCo voapbtlieo nC De-nRaObMl
> > >>> eSdC,S Ie-x0p
> > >>> edcetv irceed uc
> > >>> ecdd 0p:e r3f3o.r0m0a0nMcB/es.
> > >>> transfers"

> > >>> i'm running FreeBSD moshnroll 8.0-CURRENT FreeBSD 8.0-CURRENT
> > >>> #20 r190162M:
> > >>> Fri Mar 20 19:10:47 UTC 2009
> > >>> root_at_moshnroll:/usr/obj/usr/src/sys/ARUNDEL
> > >>> i386, but i've also had this issue under CURRENT. maybe this
> > >>> issue is smp
> > >>> related?

> > >>> cheers.
> > >>> alex
> > >> You are correct, it is smp related.  Those are two messages
> > >> interlaced.  I see
> > >> them often when shutting down my SMP system.


> > > This quesion is asked and answered again and again.

> > > Set "options PRINTF_BUFR_SIZE=128" in your kernel config.

> > Gary, do you know why setting it to 128 fixes things?  Is the
> > default size 0?  I
> > could see that causing things, but it's hard to believe.  I've been
> > watching a
> > long time to see a fix for this.


> Looking at /sys/kern/subr_prf.c, there's apparently no buffering at
> all
> when PRINTF_BUFR_SIZE isn't defined.  The value 128 has proved itself
> to be adequate based on experience since most kernel output is
> smaller
> than that.  Its' what I and others use.

> ---
> Gary Jennejohn