Messages in this thread | | | Subject | Re: [RFC PATCH v2 0/4] CPUs capacity information for heterogeneous systems | From | Steve Muckle <> | Date | Mon, 18 Jan 2016 11:25:41 -0800 |
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On 01/18/2016 07:13 AM, Juri Lelli wrote: >> DT solves these issues and would be the perfect place for this - we are >> > defining the compute capacity of a CPU which is a property of the >> > hardware. However there are a couple things forcing us to compromise. >> > One is that the amount and detail of information required to adequately >> > capture the computational abilities of a CPU across all possible >> > workloads seem onerous to collect and enumerate. The second is that even >> > if we were willing to undertake that, CPU vendors probably won't be >> > forthcoming with that information. >> > > > You mean because they won't publish performance data of their hw?
More specific things like IPC and other architectural details that could comprise a precise physical definition of a CPU that would meet the ideal goals of a device tree definition.
> But we already use per platform normalized values (as you are proposing > below). So that a platform to platform comparison doesn't make sense.
Yeah I'm just advocating for that strategy here.
cheers, Steve
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