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Date:      Wed, 10 Jul 2002 13:36:46 -0700 (PDT)
From:      Don Lewis <dl-freebsd@catspoiler.org>
To:        zipzippy@sonic.net
Cc:        current@FreeBSD.ORG
Subject:   Re: What to do with witness verbiage (is this new?)?
Message-ID:  <200207102036.g6AKakwr008407@gw.catspoiler.org>
In-Reply-To: <20020710180409.GA2555@blarf.homeip.net>

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On 10 Jul, Alex Zepeda wrote:
> On Wed, Jul 10, 2002 at 02:43:54AM -0700, Don Lewis wrote:
> 
>> I haven't had any instability problems in a while on my UP box.
> 
> Seems like the UP kernels are more unstable for me.  Go figure.
> 
>> > ../../../vm/uma_core.c:1332: could sleep with "process lock" locked from ../../../kern/kern_exec.c:332
>> 
>> I haven't seen that one.  If you can reproduce it, you might try setting
>> the debug.witness_ddb sysctl to 1 and get a stack trace from ddb.
> 
> This happened just before the box fell over (I'm now running a different 
> kernel.. SMP.. so far so good).  What's the downside to sticking 
> debug.witness_ddb=1 in /etc/sysctl.conf?

It'll drop into ddb every time you get a witness error and you'll have
to tell ddb to continue.  This could be a might annoying if you are
getting errors ever ten seconds ...


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