Date: Fri, 02 May 1997 02:04:05 -0600 From: Steve Passe <smp@csn.net> To: Andreas Klemm <andreas@klemm.gtn.com> Cc: Chuck Robey <chuckr@mat.net>, Walter Haslbeck <WH@ODS.de>, smp@FreeBSD.ORG, everybodyunix@wup.de, jk@ct.heise.de Subject: Re: Dual PPro Mainboard f. SCO SMP Message-ID: <199705020804.CAA10747@Ilsa.StevesCafe.com> In-Reply-To: Your message of "Fri, 02 May 1997 09:33:26 %2B0200." <19970502093326.00399@klemm.gtn.com>
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Hi, > > being a bi-noid I always have trouble with statistical type math, > ... > Well, am I wrong ? I saw it the other way around. Single processor > mode gave us the value 213.17. This is the 100% value. > > SMP gives us a better values. How good ? > > 119.08 / 213.17 = 0.55 > > If it would be exactly 0.5, then it would be half the time, so > a 100% speedup, so factor 2. 0.55 is exactly 90% speed gain, > factor 1.9. as I said, this type math ain't my thing... whether its 1.79 or 1.9 I'm pretty happy its as good as it currently is. Knowing how much room we have for improvement from these base numbers is very encouraging. We are quite inefficient at kernel locking, once we get our act together there it should really fly! And the current version seems to be VERY stable so I'm doubly happy!! -- Steve Passe | powered by smp@csn.net | Symmetric MultiProcessor FreeBSD
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