Hi, On Mon, Nov 30, 2015 at 9:54 PM, Kevin Cummings <cummings@xxxxxxxxxxxxxxxxxx> wrote: > On 11/27/15 15:05, Alex wrote: >> Hi, >> I have a fedora22 SuperMicro system operating as a mail server that >> has no need to have the CPU throttled. I'm having trouble figuring out >> how to disable the throttling. There also doesn't appear to be any >> recent threads discussing this previously. >> >> It appears some are running at full speed while others are not: >> >> # cat /proc/cpuinfo |grep Hz >> model name : Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz >> cpu MHz : 1875.187 >> model name : Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz >> cpu MHz : 2188.687 >> model name : Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz >> cpu MHz : 2399.906 >> model name : Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz >> cpu MHz : 1475.812 >> model name : Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz >> cpu MHz : 2075.437 >> model name : Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz >> cpu MHz : 2340.750 >> model name : Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz >> cpu MHz : 1262.062 >> model name : Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz >> cpu MHz : 2111.812 > > My understanding of CPU throttling allows the CPUs to run at full speed > when they are busy, and to be throttled back when they are idle. > > Are you sure that each CPU was engaged in doing work when you queried > their speeds? > > It is designed to allow laptops to idle (and not generate as much heat) > when they don't have to. It is *not* a permanent throttling back of the > CPUs denying you possible better computing speeds. Instead it is > designed to have the CPUs (cores) generate less heat when they are not busy. > > I have a CPU Frequency Scaling Monitor installed in a panel on my > laptop, and I can watch the CPU speeds change (increase and decrease) > with the workloads as processes come and go. Thanks for the info. In the past, the system wasn't responsive enough to adjust the CPU as load increased. It seems with recent processors, the technology is a lot more sophisticated and no longer really possible to control its speed. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
