thanks. Your MSR_CORE_PERF_LIMIT_REASONS seems to indicate that the pcode is clipping you after the microcode update. But just to be extra sure it's not a software problem, can you please update the microcode and do this:
# turbostat --msr 0x199 And paste the output. One last paranoid check is to install the microcode directly from the intel site, just to make sure there's nothing wrong with the packaging. https://downloadcenter.intel.com/download/24661/Linux-Processor- Microcode-Data-File -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1480349 Title: Breaks frequency scaling in Xeon® E5-2687W v3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1480349/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
