Date: 08 Apr 2002 10:41:04 +0200 From: Dag-Erling Smorgrav <des@ofug.org> To: Jeff Roberson <jroberson@chesapeake.net> Cc: arch@freebsd.org Subject: Re: Removing limits from malloc(9) Message-ID: <xzplmbyr3a7.fsf@flood.ping.uio.no> In-Reply-To: <20020408041726.U53877-100000@mail.chesapeake.net> References: <20020408041726.U53877-100000@mail.chesapeake.net>
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Jeff Roberson <jroberson@chesapeake.net> writes: > The last bit that is missing before we can call malloc/free w/o Giant is > the malloc_type statistics. Currently there is nothing really protecting > them. There really is no lock that they can conveniently live under. I > have a few options. The one that I'm leaning towards is only enabling > malloc_type statistics if INVARIANTS is compiled in. Then I could make > one lock per malloc_type. The reason this shouldn't be the default is > because it creates a single point of contention which is in sharp contrast > with the rest of the allocator. It's still a lot better than Giant, and it's a leaf lock so there shouldn't be any worries about reversal. I'd go for it if I were you. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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