Re: Scheduler benchmarks

[Bernd Petrovitsch]

On 19/08/2020 10:16, Muni Sekhar wrote:
> On Tue, Aug 18, 2020 at 11:45 PM peter enderborg
> <peter.enderborg@xxxxxxxx> wrote:
[...]
>> On the 4.4 kernel you dont have
>>
>> +CONFIG_RETPOLINE=y
>> +CONFIG_INTEL_RDT=y
> Thanks! That is helpful. Yes, I see 4.4 kernel don't have the above
> two config options.
> What analysis can be done to narrow down the root cause?
> Any example of reference could be helpful to understand.

I haven't checked the date of the older kernel but Spectre+
Meltdown mitigation costs a lot (20%-30% speed IIRC, out
of the top of my head).

MfG,
	Bernd
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