AMD Ryzen, EPYC 5~6% Faster Out-Of-The-Box With Linux 5.11

[phoronix]

Phoronix: AMD Ryzen, EPYC 5~6% Faster Out-Of-The-Box With Linux 5.11

Now with the CPUFreq fix landing this week in Linux Git, the mainline Linux 5.11 kernel in its near final state is looking in very good shape for AMD Zen 2/3 hardware from Ryzen laptops and desktops through EPYC servers. The Linux 5.11 development kernel was regressed for the better part of the past two months but now that the frequency invariance regression is addressed, not only is the regression gone but generally is performing much better compared to prior kernel versions.

http://www.phoronix.com/vr.php?view=29931

[torsionbar28]

AMD CPU's get faster over time (from code enhancements and optimizations), while intel CPU's get slower (Meltdown, Spectre, ITlb multihit, L1tf, Srbds, Tsx async abort, etc). Now that's a value proposition!

[extremesquared]

All these improvements *just* missing Debian 11 cutoffs bode well for the stability of Debian 12.
I'm not being facetious here. For the patient workstation builder, 2023 will see a (likely) end to shortages, a decent hardware jump in power/efficiency, and an entire release cycle testing kernel code for said hardware. Us debian users get more excited the more boring a release is.

[cytomax55]

Lol, that kind of logic makes my head hurt.... It's either boring and stable or new and exciting... You can't get excited over something boring... Can you?
aww jesus my head hurts too much thinking

[mppix]

AMD CPU's get faster over time (from code enhancements and optimizations), while intel CPU's get slower (Meltdown, Spectre, ITlb multihit, L1tf, Srbds, Tsx async abort, etc). Now that's a value proposition!

Well Debian stable always uses the stable kernel, which is 5.10 for the bullseye release. They would still use it even if 5.11 would be released in time. However, you can always install newer kernels using buster/bullseye-backports once they are released.
I suspect that some of the 5.11 improvements did not make it into 5.10 because it is the stable release and some of the commits were more on the experimental side, see e.g. the shedutil regression + fix.
I think Debian is in pretty good shape for bullseye and we get the usual use cases
-> stable/bullseye: server
-> stable/bullseye+backports: workstation
-> testing: laptop/consumer

[Linuxxx]

All these improvements *just* missing Debian 11 cutoffs bode well for the stability of Debian 12.
I'm not being facetious here. For the patient workstation builder, 2023 will see a (likely) end to shortages, a decent hardware jump in power/efficiency, and an entire release cycle testing kernel code for said hardware. Us debian users get more excited the more boring a release is.

If you are a workstation user, then why settle on Debian?
Why not use a purpose-built version of Linux like Ubuntu Studio?

[Setif]

Well Debian stable always uses the stable kernel, which is 5.10 for the bullseye release. They would still use it even if 5.11 would be released in time. However, you can always install newer kernels using buster/bullseye-backports once they are released.
I suspect that some of the 5.11 improvements did not make it into 5.10 because it is the stable release and some of the commits were more on the experimental side, see e.g. the shedutil regression + fix.
I think Debian is in pretty good shape for bullseye and we get the usual use cases
-> stable/bullseye: server
-> stable/bullseye+backports: workstation
-> testing: laptop/consumer

You mean LTS.

[mppix]

If you are a workstation user, then why settle on Debian?
Why not use a purpose-built version of Linux like Ubuntu Studio?

Oh, I was referring how you can use Debian... Personally, I prefer that but there are many valid choices including Ubuntu.

[jospoortvliet]

A cool thing to note about this is that, given Epic also benefits, these improvements are not limited to ZEN 3 but clearly work across the board of at least Zen 2 and Zen 3. Who knows, maybe Zen 1(+) benefit too ;-)

(I hope so, sporting a 2700X here)

[Michael]

A cool thing to note about this is that, given Epic also benefits, these improvements are not limited to ZEN 3 but clearly work across the board of at least Zen 2 and Zen 3. Who knows, maybe Zen 1(+) benefit too ;-)

(I hope so, sporting a 2700X here)

Aside from any general improvements like I saw in some tests like PostgreSQL, the reliance on ACPI CPPC for frequency invariance makes it only Zen 2 and later.