AMD Kaveri Gets A Big Performance Boost With Mesa 18.2 & AMDGPU DRM

[agd5f]

In related news, AMD now plans to disable amdgpu DC on Kaveri by default: https://lists.freedesktop.org/archiv...ay/022021.html
Because they have no hardware to test LVDS/VGA. Which apparently wasn't a problem before amdgpu DC or with radeon?

The code for radeon and non-DC amdgpu was written back when we had hw. These are 3 generation old APUs. It's not that we can't or won't implement support for VGA or LVDS on these old parts, it's about avoiding regressions for users now. It can be re-enabled once support is added.

[Adarion]

As the hardware museum "I" am I could send them some stuff to test with
But honestly, even as a fabless HW company they are supposed to have some HW floating around. I mean, they were among the first to have colour graphics, so they should also have some VGA peripheral devices. Moreover if they needed a VGA on the mainboard output side, there are still plenty AM1 ones out there for cheap, and most of them also feature a VGA connector.

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> agd5f
Okay, that makes sense. Still, if you need old stuff ... feel free to ask. Just shipment might be somewhat expensive.

[Kemosabe]

The comment in the code before this commit was:


So I'm pretty sure someone noticed before. The difference now is that "2" is working with the amdgpu kernel module.

Whoever wrote this line should be banned from writing software again - ever. -.-

[artivision]

Irrelevant but i must say this now: AMD check your partners! It was to built 10 cheap mini itx pc, immediately i thought 2200g at 90eu but then i saw that there where no a320 mini itx, only b350 at 100eu+. So i built the systems with Intel, saved 50eu from motherboard, 20eu from slower ram that slows 2200g but not the multithread pentium and 30eu from the processor it self. Yes the cpu performance was 2/3 thanks to hyperthreading but i saved 100eu from each pc that bought me an rx560 mini itx or similar Nvidia for each with massive gpu gaining. I'm thinking that motherboard vendors steal those 50eu from AMD. The same must happening on other fields as well.

[nomadewolf]

Wow, after so many years. What a bad joke

It's AMD's FineWine technology. Their hardware ages like a fine wine, and gets faster as time goes by...

[NateHubbard]

Irrelevant but i must say this now: AMD check your partners! It was to built 10 cheap mini itx pc, immediately i thought 2200g at 90eu but then i saw that there where no a320 mini itx, only b350 at 100eu+.

I'm holding onto my A10-7870K because I noticed the same sort of problems - the boards costs more than a 2200G and close to the 2400G. Then you start looking at DDR4 ram and... yeah never mind I'll keep this for another year at least.

[marek]

Whoever wrote this line should be banned from writing software again - ever. -.-

The software industry is lucky that you are not a manager of software development.

[gukin]

I'm holding onto my A10-7870K because I noticed the same sort of problems - the boards costs more than a 2200G and close to the 2400G. Then you start looking at DDR4 ram and... yeah never mind I'll keep this for another year at least.

Gaah, I just bought my Raven Ridge 2400G rig and right off noticed that it's twice as fast as my Kaveri 7850k at just about everything, now that's out the window.

On the other hand, I have to run Mageia Cauldron and the Linus kernel (4.16-8) and Cauldron is still quite green.

It's still fascinating how much and how frequently AMD stuff improves and speeds up, even old crufty stuff like Kaveri.

[agd5f]

Gaah, I just bought my Raven Ridge 2400G rig and right off noticed that it's twice as fast as my Kaveri 7850k at just about everything, now that's out the window.

It's only faster in cases which are RB bound. In general you probably won't notice much of a difference.

[bridgman]

As the hardware museum "I" am I could send them some stuff to test with
But honestly, even as a fabless HW company they are supposed to have some HW floating around.

We definitely have *some* HW floating around - the question is whether we have exactly the hardware required for a specific issue. Even when we do, not every instance behaves the same way when the programming isn't right.

I accumulated a few Kaveri systems over the years - will check through them over the weekend. I definitely have one with VGA out and *may* have a laptop with LVDS.