AMD To Optimize C3 Entry On Linux By Finally Skipping The Cache Flush

[phoronix]

Phoronix: AMD To Optimize C3 Entry On Linux By Finally Skipping The Cache Flush

A minor optimization was posted by an AMD engineer on Wednesday for the Linux kernel...

https://www.phoronix.com/scan.php?pa...C3-Cache-Flush

[bezirg]

This sounds like a clear-win optimization. I wonder though how easily it is to benchmark this optimization's effect.

[ThoreauHD]

Why does it feel like this is shit that should have been done half a decade ago. When is AMD building up their linux software team? They want the enterprise money, and yet...

[trubicoid2]

This sounds like a clear-win optimization. I wonder though how easily it is to benchmark this optimization's effect.

I think you would need to benchmark single threading application, while the other cores will be alternately busy/idle with some fake load.

[milkylainen]

Not likely to change that much.
But every bit counts. So while late, definitely a good thing.

[Azrael5]

In which kernel?

[skeevy420]

I tried that optimization at home. Didn't work out as well as I expected. No one appreciated me not flushing my cache and leaving the toilet bowl full.