rr on Intel Meteor Lake chips

[sidkshatriya]

Intel has introduced new mobile chips in Q3 2023 previously codenamed "Meteor Lake" now called "Core Ultra. An example SKU is the Core Ultra 155H that can be found on many laptops.

Does anyone know if rr runs well / has any issues on Meteor Lake ? This is a slightly unusual generation because there are three kinds of cores - Performance, Efficiency and Low Power Efficiency cores. Apparently all (?) programs first go on the low power efficiency cores before being promoted to other cores.

This "promotion" from the Low power Efficiency cores is probably not something that rr would like, I'm guessing. I don't know if its possible to directly place rr directly on a core without going through this promotion business.

Has anybody used rr on the latest Meteor Lake laptops ? Feedback ?

[FooBarrior]

The problem on Efficiency cores is the same that perf has. You might want to check out, if perf works fine there. It has a broader support, so the answer may appear there early.

[sidkshatriya]

Thanks for your inputs -- this is indeed a good idea -- sadly I've not been able to still find the definitive answer yet.

Given that a lot of people are probably using Linux with Meteor Lake by now and there are no issues filed in this repo, I'm increasingly confident that rr should run OK on meteor lake. Would be great to know for sure though

[karlt]

See #3338