On Thu, Sep 8, 2016 at 1:57 PM, Stewart Samuels <searider74@xxxxxxxxx> wrote: > Thanks Peter, > > This will be very disappointing if we cannot enable all the cpus. > > BTW, when you refer to upstream here, is it the Redhat team or the Kernel > team beyond? Never Red Hat. Fedora is upstream to Red Hat, so upstream means the linux kernel upstream at kernel.org and the kernel at large. > On 09/08/2016 08:40 AM, Peter Robinson wrote: >> >> On Thu, Sep 8, 2016 at 1:19 PM, Stewart Samuels <searider74@xxxxxxxxx> >> wrote: >>> >>> Hi Peter, >>> >>> I am not doing anything with the system other than booting up and logging >>> in. This is true for the Ubuntu build as well. >>> >>> Where are these policies set and can you provide any me any direction for >>> documentation on them? seeming these are distro specific, I would expect >>> something relative to Fedora. >> >> Nope, they are upstream kernel (and possibly even upstream u-boot) >> specific. The only default we set in this regard that may, or may not, >> be Fedora specific is we use the On Demand governor as the default. >> This is architecture in dependent default across Fedora. >> >> I doubt the Ubuntu build ships an upstream mainline kernel but then I >> don't follow any of what they do so TBH not sure there, I also have no >> idea what they set their default policy to. >> >> So doing a quick google for "cpufreq" I get some of the following >> links that look remotely relevant, no idea how much they are, sorry. >> >> >> https://docs.fedoraproject.org/en-US/Fedora/15/html/Power_Management_Guide/cpufreq_governors.html >> https://wiki.archlinux.org/index.php/CPU_frequency_scaling >> https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt >> https://www.pantz.org/software/cpufreq/usingcpufreqonlinux.html >> http://www.ibm.com/developerworks/library/l-cpufreq-1/index.html >> https://wiki.debian.org/HowTo/CpuFrequencyScaling >> >>> On 09/08/2016 05:29 AM, Peter Robinson wrote: >>>> >>>> On Wed, Sep 7, 2016 at 8:44 PM, Stewart Samuels <searider74@xxxxxxxxx> >>>> wrote: >>>>> >>>>> Hi Peter, >>>>> >>>>> Here is the result of lscpu. >>>>> >>>>> >>>>> >>>>> --------------------------------------------------------------------------------------- >>>>> [root@myodroid ~]# lscpu >>>>> Architecture: armv7l >>>>> Byte Order: Little Endian >>>>> CPU(s): 8 >>>>> On-line CPU(s) list: 0-4 >>>>> Off-line CPU(s) list: 5-7 >>>>> Thread(s) per core: 1 >>>>> Core(s) per socket: 2 >>>>> Socket(s): 2 >>>>> Model name: ARMv7 Processor rev 3 (v7l) >>>>> CPU max MHz: 1300.0000 >>>>> CPU min MHz: 200.0000 >>>>> >>>>> >>>>> ---------------------------------------------------------------------------------------- >>>>> >>>>> Is there any way to enable these other cpus? My Ubuntu 16.04 >>>>> installation >>>>> has them all enabled and the Ubuntu responsiveness is much quicker. I >>>>> suspect this has something to do with it. >>>> >>>> So it's shut them off, it's something with the way the big.LITTLE >>>> stuff works, so it's basically as expected. I believe it's handled as >>>> part of the cpufreq policies from user space but I've done little with >>>> the b.L stuff so I'm not sure. I'd try with the performance policy >>>> first. >>>> >>>> In terms of speed vs other distros, it would likely depend on a lot >>>> more than just the cores that are running but I have no idea what >>>> you're doing with it (remote server/desktop/what ever) so there's >>>> likely a lot that will come into play. >>> >>> > _______________________________________________ arm mailing list arm@xxxxxxxxxxxxxxxxxxxxxxx https://lists.fedoraproject.org/admin/lists/arm@xxxxxxxxxxxxxxxxxxxxxxx
