KDE's KWin Adds DMA-Fence Deadline Support

[phoronix]

Phoronix: KDE's KWin Adds DMA-Fence Deadline Support

KDE's KWin compositor has added DMA-Fence deadline support to its DRM back-end that can help ensure rendering is completed on-time and otherwise helping to boost the GPU clock speeds...

https://www.phoronix.com/news/KDE-KWin-DMA-Fence-Deadline

[jamesblacklock]

Just here for the DRM drinking game: take a shot every time someone enters the forum and posts a comment raging about how "DRM shouldn't be in Linux," not realizing that it's a completely different acronym.

[slagiewka]

Another showstopper likely gone

[chromer]

increase GPU clocks in order to hopefully hit our deadlines

But it will cost more power consumption! this is a downside.

[aviallon]

But it will cost more power consumption! this is a downside.

It's better than the workaround, which is having higher GPU clocks all the time.

[s_j_newbury]

It's better than the workaround, which is having higher GPU clocks all the time.

Which is what was probably happening with the Xorg server. Higher average GPU load was just incidentally causing the clocks to be high enough to meet the deadline more reliably.

[Kjell]

Is this supported by Sway?

[chromer]

If Intel is culprit, why don't they fix it upstream?

[Random_Jerk]

Does this change impact only Intel GPU's or is it for all of them?

[archkde]

If Intel is culprit, why don't they fix it upstream?

The upstream fix is offering that API. Now KWin makes use of it to benefit from the fix.