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Date:      Fri, 29 Jun 2007 17:13:56 +0100
From:      Tom Evans <tevans.uk@googlemail.com>
To:        Kevin Kramer <kramer@centtech.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: 7-Current: turn off debugging (kqread?)
Message-ID:  <1183133636.1511.66.camel@localhost>
In-Reply-To: <46851860.1030401@centtech.com>
References:  <46851860.1030401@centtech.com>

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On Fri, 2007-06-29 at 09:34 -0500, Kevin Kramer wrote:
> I know that debugging is turned on everywhere on 7-Current and I've read=20
> UPDATING. But what I can't find is how to turn off debugging. I've tried=20
> removing all debugging from the kernel, but it won't build. I can't find=20
> any userland debugging notes to turn it off.
>=20
> It is taking literally 5 minutes to login to my host and the same amount=20
> of time to run top. Processes get stuck in kqread. Maybe this is not a=20
> 7-Current debugging problem, but I need some guidance on where to go or=20
> what to look for.
>=20
> Any help appreciated.

In your kernel config, remove these lines if they exist:

options         INVARIANTS              # Enable calls of extra sanity
checking
options         INVARIANT_SUPPORT       # Extra sanity checks of
internal structures, required by INVARIANTS
options         WITNESS                 # Enable checks to detect
deadlocks and cycles
options         WITNESS_SKIPSPIN        # Don't run witness on spinlocks
for speed

You can leave the "options {K,D,G}DB" lines, they incur virtually now
performance costs.

You would get more help (possibly) if you tried posting on current@


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