On Fri, Jun 15, 2012 at 5:04 AM, Mali Laurent <[email protected]> wrote: > On 15/06/2012 12:00, [email protected] wrote: >> >> Message: 1 > > Hi, > > >> Date: Thu, 14 Jun 2012 16:03:17 +0200 >> From: pierigno <[email protected]> >> To: Sabayon public development mailing list <[email protected]> >> Subject: Re: [sabayon-dev] Remove hotplug CPU from default kernel >> config >> Message-ID: >> >> <can7frvtta1owbyff2ts86ty-g2eufr9+cofujhsp2kwoufy...@mail.gmail.com> >> Content-Type: text/plain; charset=ISO-8859-1 >> >> >> Did Mali followed the kernel docs instructions on how to deal with >> interrupt and smp-affinity? >> http://www.kernel.org/doc/Documentation/cpu-hotplug.txt >> http://www.kernel.org/doc/Documentation/IRQ-affinity.txt >> >> Also here is a good article that explains quite well how to operate >> the irq balancing: >> >> >> http://www.alexonlinux.com/smp-affinity-and-proper-interrupt-handling-in-linux >> >> >> Fabio is right, CONFIG_HOTPLUG_CPU is necessary for suspend to work >> with SMP (it let turning on and off CPUs). >> >> 2012/6/11 Fabio Erculiani <[email protected]>: >>> >>> I don't think we can disable CONFIG_HOTPLUG_CPU, See my comment at bug >>> 3391. >>> >>> -- >>> Fabio Erculiani >>> >> >> > > Thank you for the links. The Article is indeed a interesting read. >
I've been surveying /proc/interrupts on my Multi-core machines. All of them seem to be balancing IRQ calls very well out-of-the-box with CONFIG_HOTPLUG_CPU enabled. I've never tried to adjust CPU affinity.
