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Date:      Thu, 22 Feb 2001 06:18:16 -0800 (PST)
From:      John Baldwin <jhb@FreeBSD.org>
To:        current@FreeBSD.org
Subject:   HEADSUP: please don't use MUTEX_DEBUG
Message-ID:  <XFMail.010222061816.jhb@FreeBSD.org>

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Ok, just to formally state this in case people have missed all the informal
announcements:

Please use the following to help with debugging in -current:

options         DDB
options         INVARIANTS
options         WITNESS

Please do _not_ use the following:

options         MUTEX_DEBUG     # only used for debugging the mutex
                                # implementation, and is a major
                                # performance killer
options         WITNESS_DDB     # we aren't quite ready to turn this
                                # on yet
options         INVARIANT_SUPPORT       # this isn't used, and in fact,
                                        # I just axed it

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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