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Date: Sat, 16 Jun 2012 02:32:57 -0700 (PDT) From: Mahmood Naderan <nt_mahmood@...oo.com> To: Clemens Ladisch <clemens@...isch.de> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: about interlagos Thanks // Naderan *Mahmood; ----- Original Message ----- From: Clemens Ladisch <clemens@...isch.de> To: Mahmood Naderan <nt_mahmood@...oo.com> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Sent: Saturday, June 16, 2012 1:50 PM Subject: Re: about interlagos Mahmood Naderan wrote: > As you can see, although interlagos is the newest one which has higher cpu > clock rate and higher cache size, the bogomips of interlagos is the lowest! > I read that bogomips is not a true measurement, Indeed it is not. > but it senses as a speed meter. It measures the speed of one particular delay loop. Because such a busy loop is pretty much the silliest thing you could do to a CPU, it does not make sense to use it to measure overall CPU speed, or to compare different microarchitectures. > Any idea? If you want to know how fast your code will execute, you have to measure that code. If you are too lazy to do this, search for a benchmark that represents that code well; for general-purpose code, the gcc part of the SPEC CPU benchmark probably comes closest. Regards, Clemens -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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