AGESA Might Fix The Ryzen Linux Performance Marginality Problem

Written by Michael Larabel in AMD on 13 September 2017 at 08:22 PM EDT. 78 Comments
Motherboard vendors have begun pushing out BIOS updates for Ryzen motherboards using the AMD AGESA revision and it's reported that it does resolve the "Performance Marginality Problem" affecting early Ryzen Linux customers.

While newer Ryzen CPUs are running great on Linux without the performance marginality problem as described by AMD, since yesterday I have begun receiving unconfirmed reports from Phoronix readers that the recent AGESA revision does address the issue via this software update.

But unfortunately details on AGESA are light. Most of the web pages / threads referencing AGESA are actually inquiring about the changes to be found in this update, but few actual details on this update that has been surfacing in the past two weeks via BIOS updates.

After beginning to receive reader statements since yesterday that AGESA addresses the Linux "performance marginality problem", I reached out to some AMD contacts when waking up this morning. Unfortunately, as of ending out the day, I have yet to receive any comment from any of them whether this update is expected to address the problem.

Since then as well I have received a comment from the reader of being able to reproduce the performance marginality problem under Windows. There is now the kill-ryzen-win script that also seeks to illustrate Ryzen issues when using Visual Studio C/C# compilation. But we'll see if the latest AGESA update takes care of that too or if hearing anything else from AMD.
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Michael Larabel

Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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