Date: Tue, 2 May 2006 18:12:22 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua> Cc: freebsd-stable@freebsd.org Subject: Re: RELENG_4 -> 5 -> 6: significant performance regression Message-ID: <20060502181118.M92256@fledge.watson.org> In-Reply-To: <20060427160536.M96305@atlantis.atlantis.dp.ua> References: <20060427160536.M96305@atlantis.atlantis.dp.ua>
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On Thu, 27 Apr 2006, Dmitry Pryanishnikov wrote: > options INVARIANTS > options INVARIANT_SUPPORT In FreeBSD 5.x and FreeBSD 6.x, the INVARIANTS option has been significantly expanded to test a much larger set of invariants, and also incorporate kernel use-after-free checking, which involves memory scrubbing. This is great for catching bugs, but it will have a significant performance impact, especially for kernel-intensive loads. Robert N M Watson
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