Re: Scheduler benchmarks

Bernd Petrovitsch
2020-08-19T11:03:22Z

[-- Attachment #1: Type: text/plain, Size: 716 bytes --]

On 19/08/2020 10:16, Muni Sekhar wrote:
> On Tue, Aug 18, 2020 at 11:45 PM peter enderborg
> <peter.enderborg@sony.com> 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
--
There is no cloud, just other people computers.
-- https://static.fsf.org/nosvn/stickers/thereisnocloud.svg

[-- Attachment #2: pEpkey.asc --]
[-- Type: application/pgp-keys, Size: 3161 bytes --]