I've also seen this issue with a Dell R740 server, Xeon Gold 6132 CPU @ 2.60GHz, kernel 4.13.0-37-generic. Switching to hpet clocksource mitigated it successfully.
Unfortunately I still haven't had the opportunity to test this on 4.15. ** Summary changed: - Very inaccurate TSC clocksource on HP ProLiant DL380 Gen10 with kernel 4.13 + Very inaccurate TSC clocksource with kernel 4.13 on selected CPUs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759787 Title: Very inaccurate TSC clocksource with kernel 4.13 on selected CPUs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1759787/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
