News Ryzen 7000 Runs Faster With Security Mitigations Enabled on Linux

[Admin]

A new report reveals that Ryzen 7000 processors operating on the Zen 4 architecture are running faster with security mitigations enabled on Linux version 6.0, compared to disabling them manually.

Ryzen 7000 Runs Faster With Security Mitigations Enabled on Linux : Read more

 

[hotaru251]

Linux happy little accident.

wonder if anyone will actually deep dive and see why it is happening.

 

[prtskg]

Linux happy little accident.

wonder if anyone will actually deep dive and see why it is happening.

Probably AMD has tuned the branch predictor accordingly.🤔

 

[sepuko]

They should probably test if the mitigations work at all when enabled. This performance discrepancy is somewhat smelly.

 

[macgeek]

How do 5000-series (Zen 3) CPUs perform with these new mitigations?

 

[prtskg]

How do 5000-series (Zen 3) CPUs perform with these new mitigations?

These are older mitigations and zen 3 speed decrease with it.

 

[macgeek]

These are older mitigations and zen 3 speed decrease with it.

Older, like from 2018?

 

[prtskg]

Older, like from 2018?

If spectre V2 mitigation is turned off, it reduces performance. That March 2022 only. So I was wrong.
https://www.phoronix.com/review/amd-zen4-spectrev2