On Thu, Jul 18, 2013 at 03:04:25PM -0700, Richard Henderson wrote: > On 07/18/2013 02:28 PM, Michael Cree wrote: > > On the kernel without the patch set the dummy-RTC timer interrupt received > > 30876 interrupts in a 30s period which is within measurement uncertainty of > > the expected 30*1024 = 30720 interrupts. > > > > On the kernel with the patch set the dummy-RTC timer interrupt received 14419 > > interrupts on CPU-1, 13935 interrupts on CPU-2 and 2619 interrupts on CPU-3 > > over a 30s period. > > Grr. Naturally, the old kernel obfuscates which timers are being delivered > where. So a direct comparison doesn't appear possible. But those separated > numbers seem uncomfortably low. > > I've just pushed a new branch to > > git://github.com/rth7680/linux.git axp-qemu-7 > > Please try that with CONFIG_ALPHA_WTINT disabled. I'd like to eliminate that > as a source of uncertainty for your system. Running that axp-qemu-7 branch with RTC_DRV_ALPHA on and ALPHA_WTINT off still results in a rather slow clock. (Does start up with correct time now that I have RTC_DRV_ALPHA selected.) Over a 30s period still get too few timer interrupts: 843, 28805 and 1434 interrupts on the CPUs. Cheers Michael -- To unsubscribe from this list: send the line "unsubscribe linux-alpha" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
