Linux 6.2's Call Depth Tracking Helps Recover Lost Performance On Intel Skylake CPUs
Written by Michael Larabel in Software on 28 December 2022 at 08:00 PM EST. Page 3 of 6. 21 Comments.
The retbleed=stuff operation was also helping with the OpenJDK Java workloads in recovering the IBRS performance penalty on this Xeon Skylake server.
Across a wide variety of workloads, the Call Depth Tracking mitigation was showing to be clearly less impactful than the default IBRS mitigation for Retbleed.