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Date:      Fri, 1 Jul 2005 10:05:20 -0400
From:      John Baldwin <jhb@FreeBSD.org>
To:        Peter Edwards <peadar@FreeBSD.org>
Cc:        arch@FreeBSD.org
Subject:   Re: ktrace and KTR_DROP
Message-ID:  <200507011005.21343.jhb@FreeBSD.org>
In-Reply-To: <20050701132104.GA95135@freefall.freebsd.org>
References:  <20050701132104.GA95135@freefall.freebsd.org>

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On Friday 01 July 2005 09:21 am, Peter Edwards wrote:
> Y'all,
>
> Ever since the introduction of a separate ktrace worker thread for
> writing output, there's the distinct possibility that ktrace output
> will drop requests. For some proceses, it's actually inevitable:
> as long as the traced processes can sustain a rate of generating
> ktrace events faster than the ktrace thread can write them, you'll
> eventually run out of ktrace requests.

The patch looks good to me, and I'd even be ok with having neverdrop on by 
default.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org



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