AMDGPU Submits LRU Bulk Moves Support As A Linux 5.4 "Fix" For Better Performance

[phoronix]

Phoronix: AMDGPU Submits LRU Bulk Moves Support As A Linux 5.4 "Fix" For Better Performance

While initially queued as a work-in-progress feature for Linux 5.5, AMD has now submitted a batch of "fixes" to the current Linux 5.4 cycle that include enabling of the LRU bulk moves performance-boosting functionality...

http://www.phoronix.com/scan.php?pag...-Moves-5.4-Fix

[skeevy420]

All of that does not patch cleanly into 5.2 even after removing all non-existent Navi specific stuff

I figure that y'all figure that I'd try that

[tildearrow]

All of that does not patch cleanly into 5.2 even after removing all non-existent Navi specific stuff

I figure that y'all figure that I'd try that

What? It's a huge patchset, so don't expect it to work.

I remember that during a time back in 2017 when I had to use AMDGPU-PRO to run my Vega card I used the DKMS module that came bundled with it, and it worked well for around a year.

[Nille_kungen]

The reason i see for porting it to Linux 5.4 is that 5.4 will be an longterm supported kernel.

[skeevy420]

What? It's a huge patchset, so don't expect it to work.

I remember that during a time back in 2017 when I had to use AMDGPU-PRO to run my Vega card I used the DKMS module that came bundled with it, and it worked well for around a year.

Neither did I. Granted that all I did was a squash to patch and ran with it.

[dwagner]

Looking at the never decreasing list of stability issues reported in the tracker I wonder how all those performance tweaks are supposed to be relevant at this time. In the part of the IT industry I am working in, no customer would accept anything nearly as unstable as the amdgpu driver, and at its current state, every man-hour invested would be on fixing it, rather than performance optimizations.

[dimko]

5700XT, 5.4-r1

Xort starts
Games start. work fine in non fullscreen mode.

Those fullscreen eith runtime hang and hang Xorg with it. Or hang on exit and hang Xorg with it.

[tildearrow]

Looking at the never decreasing list of stability issues reported in the tracker I wonder how all those performance tweaks are supposed to be relevant at this time. In the part of the IT industry I am working in, no customer would accept anything nearly as unstable as the amdgpu driver, and at its current state, every man-hour invested would be on fixing it, rather than performance optimizations.

This. Stability is paramount, but apparently open-source developers don't think so.

(Even stable versions aren't that stable)

[dimko]

This. Stability is paramount, but apparently open-source developers don't think so.

(Even stable versions aren't that stable)

Since I was directly affected, I can also report, bug fixed. i don't have this issue no more. Patch will go upstream shortly.

[ntropy]

For whats it worth: I have only had performance and features increases with the amdgpu driver. Latest DC patches boosted my battery life by another 2 hours on a Vega 8 APU. I cant say I am having troubles on Raven Ridge and Vega.
Of course navi is a different story.