[PATCH] Add math benchmark latency test

[Arjan van de Ven]

On 8/16/2017 7:26 AM, Siddhesh Poyarekar wrote:
> On Wednesday 16 August 2017 07:53 PM, Arjan van de Ven wrote:
>> well not really...
>>
>> I've been working on making expf() faster for x86 (see HJ's email
>> earlier), and
>> with a massive out of order/pipelined cpu, latency and throughput are
>> very distinct things.
>> expf() can run at a throughput of somewhere in the 10 to 11 cycles
>> range, while the latency
>> can be in the 45 to 55 cycles range.
>> (not trying to do benchmarking here, just wanting to show an order of
>> magnitude)
>
> Ah sorry, I should have been clearer - inverse in terms of units, not
> value, i.e. throughput is typically expressed in items/unit time while
> latency is expressed in time/unit item.

maybe "throughput-time" ?