On Fri, May 12, 2006 at 11:32:44PM +0300, Dmitry Pryanishnikov wrote: > > Hello! > > On Tue, 2 May 2006, Robert Watson 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. > > So maybe it's time to add, say, > > options INVARIANTS_EXTENDED > > for these new and expensive checks, and leave only basic and cheap (yet > effective for bug hunting) asserts enabled when only > > options INVARIANTS > > is defined?
No, they are all effective for bug hunting. You just need to be aware that it is incompatible with performance. Kris
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