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

[qarium]

If only AMD would release some Xeon E3 competitors. EPYC 5000 anyone? The current 3000 and 7000 series naming certainly leaves that possibility open. It sure would be nice to have some socketed EPYC options in the 45w, 65w, 95w range, something that could replace the Opteron 4000 series. For many applications, official ECC support is a must, so Xeon E3 is the only option in this market right now.
PS. Yes I know about Ryzen Pro having ECC support, but 1) that's OEM only, and 2) there are zero OEM's selling it with ECC enabled.

many AM4 mainboards have ECC support in the "45w, 65w, 95w range"

"official ECC support is a must"

comeone who cares? an inofficial ECC support is as good as an Official support.

[creative]

pal666 From what I understand the 5000 series does support up to a 2000Mhz fabric frequency provided that one has a DDR4 4000Mhz kit and is willing to meet with the possibility of wracking their nerves with memory timings if not found in the verified vendors list.

[creative]

i'm pretty sure memory controller is behind infinity fabric and if their clocks are different, performance will suffer

I would not think it would be any different than on my R5 3600 as I am still using the same 32GB DDR4 3200C16 kit which means the default fabric speed is 1600 for that. Never really wanted to mess with the fabric frequency.

[pal666]

Single boost clocks hit 4.850 GHz. All core is 4.5+ GHz. Pardon me, I actually meant CCD. Don't think there is infinity fabric used in this part.

i'm pretty sure memory controller is behind infinity fabric and if their clocks are different, performance will suffer

[creative]

what are infinity fabric and memory clocks?

Single boost clocks hit 4.850 GHz. All core is 4.5+ GHz. Pardon me, I actually meant CCD. Don't think there is infinity fabric used in this part.

[pal666]

So far things are looking great for the premium single CCX 8c16t R7 5800X. Single boost clocks hit 4.850 GHz. All core is 4.5+ GHz.

what are infinity fabric and memory clocks?

[creative]

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.

Concerning zenpower.

Do you think cpu stats such as voltage and power draw for the 5000 series will be added later for future kernels? I had good readouts for my R5 3600 but was looking through some reddit stuff and found that this kind of support looks to be not intended for the future of the 5000 series. I take reddit posts with a serious grain of salt though.

[pal666]

At first I thought you must be upset about something

so you missed your opportunity to learn

[creative]

So far things are looking great for the premium single CCD 8c16t R7 5800X. Single boost clocks hit 4.850 GHz. All core is 4.5+ GHz. Zenpower cpu stat support is not planned for the 5000 series for zenmonitor from what I understand so far, have just used cpu-x and /proc/cpuinfo for looking at clocks.

[creative]

Is there any chance of these patches being backported to 5.10? I really hope so because many people (myself included) jump from LTS release to LTS release.

Will more than likely be distribution dependent. Right now 5.11 is still experimental on Manjaro. I ran it and a render time for Kdenlive came down a little, 5:30 to 5:06 but thats actually margin of error in my opinion. Things are likely to improve though once 5.11 goes stable.

I generally don't like running experimental kernels but I have had it installed for about a week now just to see whats up, there is some wonkyness right now with 5.11 as it is still in an expiramental state for Manjao.