[Bug 1886602] Re: Windows 10 very slow with OVMF

[Laszlo Ersek (Red Hat)]

Sorry, no input from me. OVMF is apparently from November 2018, and QEMU
is version 3.1. Please try to reproduce with recent upstream components
(build both OVMF and QEMU from source), and if the issue persists,
please provide the complete QEMU command line, capture the OVMF debug
log (see OvmfPkg/README for instructions on that), and please also
provide the host CPU characteristics (/proc/cpuinfo,
/sys/module/kvm_*/parameters/*).

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https://bugs.launchpad.net/bugs/1886602

Title:
  Windows 10 very slow with OVMF

Status in QEMU:
  New

Bug description:
  Debian Buster

  Kernel 4.19.0-9-amd64
  qemu-kvm 1:3.1+dfsg-8+deb10u5
  ovmf 0~20181115.85588389-3+deb10u1

  Machine: Thinkpad T470, i7-7500u, 20GB RAM
  VM: 4 CPUs, 8GB RAM, Broadwell-noTSX CPU Model

  Windows 10, under this VM, seems to be exceedingly slow with all
  operations. This is a clean install with very few services running.
  Task Manager can take 30% CPU looking at an idle system.

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