Date: Tue, 5 Dec 2000 01:11:23 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: jlemon@flugsvamp.com (Jonathan Lemon) Cc: jhb@FreeBSD.ORG, smp@FreeBSD.ORG Subject: Re: Netgraph and SMP Message-ID: <200012050111.SAA16418@usr02.primenet.com> In-Reply-To: <200012042348.eB4NmeA73673@prism.flugsvamp.com> from "Jonathan Lemon" at Dec 04, 2000 05:48:40 PM
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> >> As for the actual availibility of SIX-style locks; I'm fairly sure you > >> can do this with the lockmgr. > > > >Yes. See the allproc_lock as an example. > > Let's get realistic here. We're not going to get a shared lockmgr > lock for every stinking packet that comes into the network. While > SIX locks (or semaphore, or shared reader/writer) is nice in theory, > I think the performance impact is too much for this particular case. We did 20,000 transactions a second on a P60 with a SIX mode lock manager, back in 1994. Performance is not that big a problem. On the other hand, grabbing it for every packet is not really a great idea. 8-/. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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