56 Patches Volleyed For Improving Intel Linux Graphics Driver Scheduling

[phoronix]

Phoronix: 56 Patches Volleyed For Improving Intel Linux Graphics Driver Scheduling

Longtime Intel open-source graphics driver developer Chris Wilson sent out a set of 56 patches today working to improve their kernel graphics driver's scheduling performance...

http://www.phoronix.com/scan.php?page=news_item&px=56-Improve-Intel-GPU-Sched

[Guest]

"prevented from entering higher C-states"

Should that be lower instead?

[damentz]

"prevented from entering higher C-states"

Should that be lower instead?

Higher C states indicate higher power savings. For example, C0 is completely active without power-gating while C6 and C7 have non-retention modes to shut down silicon that isn't used while idle. If you're on Intel, you can use tools like i7z to monitor what percent each C-state is used during a time sample, per core.

As a note on these patches, I'm super excited about what type of performance we'll get. Having a fair, low-latency render scheduler is a good way to get the most out of an already low bandwidth GPU. I hope AMD is taking a look and implements something similar for their Radeon GPUs if they haven't already.