Date: Mon, 3 Feb 2003 17:56:40 -0500 From: Jake Burkholder <jake@locore.ca> To: Mike Barcroft <mike@FreeBSD.org> Cc: Garance A Drosihn <drosih@rpi.edu>, sparc64@FreeBSD.org Subject: Re: SMP and Sparc64 Message-ID: <20030203175640.D2837@locore.ca> In-Reply-To: <20030203174024.F15651@espresso.q9media.com>; from mike@FreeBSD.org on Mon, Feb 03, 2003 at 05:40:24PM -0500 References: <p05200f45ba649b5754f6@[128.113.24.47]> <20030203172739.C2837@locore.ca> <20030203174024.F15651@espresso.q9media.com>
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Apparently, On Mon, Feb 03, 2003 at 05:40:24PM -0500, Mike Barcroft said words to the effect of; > Jake Burkholder <jake@locore.ca> writes: > > Apparently, On Mon, Feb 03, 2003 at 05:20:51PM -0500, > > Garance A Drosihn said words to the effect of; > > > > > I notice the GENERIC kernel for the sparc64 port has SMP support > > > turned on. I also vaguely remember some comment somewhere that > > > indicated this was intentional. Is it a bad idea to comment out > > > those lines on sparc64 kernels? > > > > Doesn't make much difference. There's a very small performance improvement > > for removing it on a UP system, but I doubt its measurable. > > This might become an issue in the future with sched_ule, since it has > SMP conditional code that does affect performance. Hmm, good point. Using ifdefs for that stuff is arguably a bug. Jake To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-sparc" in the body of the message
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