[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Xen on ARM IRQ latency and scheduler overhead
Hi Dario, On 02/17/2017 06:40 PM, Dario Faggioli wrote: On Thu, 2017-02-09 at 16:54 -0800, Stefano Stabellini wrote: Actually, TSC on this box should be stable and invariant, so I guess I can try with the default governor. Will do that on Monday. Does ARM have frequency scaling (I did remember something on xen-devel, but I am not sure whether it landed upstream)? I guess you mean the series sent by globallogic ([1])? If so, it was never upstreamed. However the frequency scaling may depend on the processor used and sometimes implemented using big.LITTLE (e.g the task has to switch). I am not sure why it would matter in this case.[1] https://lists.xenproject.org/archives/html/xen-devel/2014-10/msg00801.html -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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