Clock speed on RasPi?
Hi Stephen, With the mainline kernel, /proc/cpuinfo shows a bogoMips of ~460. The downstream raspberrypi.org kernel shows ~690. Changing the arm_freq setting in /boot/config.txt has no affect. Any idea why the difference? -- Paul -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Clock speed on RasPi?
On Sat, Jul 20, 2013 at 10:04:16PM +, Paul Zimmerman wrote: Hi Stephen, With the mainline kernel, /proc/cpuinfo shows a bogoMips of ~460. The downstream raspberrypi.org kernel shows ~690. Changing the arm_freq setting in /boot/config.txt has no affect. Any idea why the difference? You really are worried about bogoMips? The calculation of it has recently changed in mainline, so that might be what you are seeing here. Otherwise, what does it matter? It's a fake number anyway :) greg k-h -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: Clock speed on RasPi?
From: Greg KH [mailto:g...@kroah.com] Sent: Saturday, July 20, 2013 3:11 PM On Sat, Jul 20, 2013 at 10:04:16PM +, Paul Zimmerman wrote: Hi Stephen, With the mainline kernel, /proc/cpuinfo shows a bogoMips of ~460. The downstream raspberrypi.org kernel shows ~690. Changing the arm_freq setting in /boot/config.txt has no affect. Any idea why the difference? You really are worried about bogoMips? The calculation of it has recently changed in mainline, so that might be what you are seeing here. Otherwise, what does it matter? It's a fake number anyway :) Well, the Pi is rather lacking when it comes to performance. I was just wondering if the bogoMips value indicated some problem with the hardware setup in the mainline kernel, or with the new bootloader. But if the bogoMips calculation has changed since 3.6, that indeed could explain it. -- Paul -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: Clock speed on RasPi?
From: Paul Zimmerman Sent: Saturday, July 20, 2013 3:25 PM From: Greg KH [mailto:g...@kroah.com] Sent: Saturday, July 20, 2013 3:11 PM On Sat, Jul 20, 2013 at 10:04:16PM +, Paul Zimmerman wrote: Hi Stephen, With the mainline kernel, /proc/cpuinfo shows a bogoMips of ~460. The downstream raspberrypi.org kernel shows ~690. Changing the arm_freq setting in /boot/config.txt has no affect. Any idea why the difference? You really are worried about bogoMips? The calculation of it has recently changed in mainline, so that might be what you are seeing here. Otherwise, what does it matter? It's a fake number anyway :) Well, the Pi is rather lacking when it comes to performance. I was just wondering if the bogoMips value indicated some problem with the hardware setup in the mainline kernel, or with the new bootloader. But if the bogoMips calculation has changed since 3.6, that indeed could explain it. Ah, never mind. With the downstream 3.6.11 kernel, the bogoMips value is the same as with mainline. So the difference must be due to the change in bogoMips calculation since the older kernels. Sorry for the noise. -- Paul -- To unsubscribe from this list: send the line unsubscribe linux-usb in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
