The puzzling thing was that spectre V2 mitigations were cited as the main culprit. They were responsible by themselves for a 15-20% slowdown, which is about an

The puzzling thing was that spectre V2 mitigations were cited as the main culprit. They were responsible by themselves for a 15-20% slowdown, which is about an order of magnitude worse than in my experience. I wonder if the system had IBRS enabled instead of using retpolines at the mitigation strategy?