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

[Alex Austin]

# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Table at 0x9A694000.

...

Handle 0x000A, DMI type 4, 48 bytes
Processor Information
        Socket Designation: U3E1
        Type: Central Processor
        Family: Core i7
...
        Core Count: 2
        Core Enabled: 2
        Thread Count: 4
        Characteristics:
                64-bit capable
                Multi-Core
                Hardware Thread
                Execute Protection
                Enhanced Virtualization
                Power/Performance Control


Handle 0x000B, DMI type 0, 24 bytes
BIOS Information
        Vendor: LENOVO
        Version: N1QET88W (1.63 )
        Release Date: 04/22/2020
        Address: 0xE0000
        Runtime Size: 128 kB
        ROM Size: 16 MB
        Characteristics:
                PCI is supported
                PNP is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                Boot from CD is supported
                Selectable boot is supported
                EDD is supported
                3.5"/720 kB floppy services are supported (int 13h)
                Print screen service is supported (int 5h)
                8042 keyboard services are supported (int 9h)
                Serial services are supported (int 14h)
                Printer services are supported (int 17h)
                CGA/mono video services are supported (int 10h)
                ACPI is supported
                USB legacy is supported
                BIOS boot specification is supported
                Targeted content distribution is supported
                UEFI is supported
        BIOS Revision: 1.63
        Firmware Revision: 1.35

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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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