> This is what a linux-2.6.x reports (for the MPC8313E running at 333 MHz): > Calibrating delay loop... 83.20 BogoMIPS (lpj=166400) > > Which can't be correct. > > A MPC870 (running at 133 mhz) has ~ 131.07 BogoMIPS
Actaully, one-instruction-per-clock leads to BogoMIPS = MHz. Your "loop per jiffies" value shows you make 332800 instructions per jiffy (a loop is two instructions: increment and jump). So most liker your timer tick runs at 1000 Hz but Linux is thinking it's at 250Hz (332800 * 250 = 83.20 millions). > Of course it's only a benchmark figure. No, it's not a benchmark figure. It's the metric by which udelay() is calculated. So your udelays (and mdelays) will be 4 times shorter than required, and some hardware may be misbehaving as a result. Hope this help /alessandro, who however is not runing a powerPC these times _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
