Performing verification for Oracular I deployed a bare metal host, and installed a KVM stack just like the testcase section.
Sapphire Rapids Intel(R) Xeon(R) Platinum 8468 24.10 Oracular 6.11.0-13-generic Outside VM cpuid 3368 cpuid 3399 cpuid 3560 cpuid 3282 cpuid 3289 Inside VM cpuid 66195 cpuid 67674 cpuid 69635 cpuid 70856 cpuid 64587 I then enabled -proposed on both the bare metal system and the VM, and installed 6.11.0-17-generic. $ uname -rv 6.11.0-17-generic #17-Ubuntu SMP PREEMPT_DYNAMIC Thu Jan 16 23:58:35 UTC 2025 I then re-ran the tests: 6.11.0-17-generic Outside VM cpuid 3374 cpuid 3298 cpuid 3325 cpuid 3448 cpuid 3470 Inside VM cpuid 23193 cpuid 23517 cpuid 23774 cpuid 23993 cpuid 23754 As we can see, Outside VM testcases are stable, while Inside VM performance has improved by what we expected, going from around 68,000 to 23,000. The kernel in -proposed solves the problem, happy to mark verified for Oracular. ** Tags removed: verification-needed-oracular-linux ** Tags added: verification-done-oracular-linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2093146 Title: KVM: Cache CPUID at KVM.ko module init to reduce latency of VM-Enter and VM-Exit To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2093146/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
