On Fri, Oct 26, 2018 at 07:51:16PM +0200, Pascal Hambourg wrote: > Le 26/10/2018 à 16:34, Reco a écrit : > > > > On Fri, Oct 26, 2018 at 09:59:16AM -0400, Michael Stone wrote: > > > On Fri, Oct 26, 2018 at 08:57:29AM +0300, Reco wrote: > > > > > > > > grep bogomips /proc/cpuinfo > > > > > > Anyone reading that advice: ignore it. You cannot use bogomips to > > > meaningfully compare processors. > > > > The reason being? > > The kernel uses it just fine for the clock calibration. > > As far as I remember, the bogomips number has consistently been twice the > current clock frequency on any x86 PCU I have ever run Linux on.
Either your math is off, or they've changed it. $ lscpu | egrep '(Vendor|MHz|MIPS)' # This PC Vendor ID: GenuineIntel CPU MHz: 1599.975 CPU max MHz: 3800.0000 CPU min MHz: 1600.0000 BogoMIPS: 6800.59 $ lscpu | egrep '(Vendor|MHz|MIPS)' # Certain VPS Vendor ID: GenuineIntel CPU MHz: 2099.996 BogoMIPS: 4199.99 And, $ lscpu | egrep '(Vendor|MHz|MIPS)' # Xeon X5675 Vendor ID: GenuineIntel CPU MHz: 1600.000 BogoMIPS: 6117.70 > How can you measure and compare processor performance from the mere clock > frequency ? That's I agree with. REco
