QEMU: Difference between revisions

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== Boot test ==
== Performance comparison between accelerators ==


https://help.ubuntu.com/lts/installation-guide/amd64/ch03s05.html
Read this topic "[https://help.ubuntu.com/lts/installation-guide/amd64/ch03s05.html Meeting Minimum Hardware Requirements]" first.


<source lang="text">
=== Tiny Code Generator ===
cd ~\Downloads
It sucks ...


# with Tiny Code Generator - very slow
<source lang="bash">
# Single thread
qemu-system-x86_64 -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
qemu-system-x86_64 -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G


# with HAX - won't work
# Multithread
qemu-system-x86_64 -accel tcg,thread=multi -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
</source>
 
=== Intel HAXM ===
Need to install [https://github.com/intel/haxm/releases Intel HAXM] first, and disable Hyper-V.<br>
If Docker Desktop was installed, this is not a good solution.
 
<source lang="bash">
qemu-system-x86_64 -accel hax -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
qemu-system-x86_64 -accel hax -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
Failed to open the HAX device!
Failed to open the HAX device!
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Failed to get Hax capability:6u
Failed to get Hax capability:6u
No accelerator found.
No accelerator found.
</source>


=== Windows Hypervisor Platform (recommended) ===
<source lang="text">
# with Windows Hypervisor Platform - good!
# with Windows Hypervisor Platform - good!
qemu-system-x86_64 -accel whpx -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
qemu-system-x86_64 -accel whpx -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
Windows Hypervisor Platform accelerator is operational
Windows Hypervisor Platform accelerator is operational
# with Tiny Code Generator (multithread) - still slow
qemu-system-x86_64 -accel tcg,thread=multi -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
</source>
<source lang="text">
"C:\Program Files\qemu-2.1.0\qemu-system-x86_64.exe"
-drive "file=C:\disk1.vmdk,index=0,media=disk"
-drive "file=C:\disk2.vmdk,index=1,media=disk"
-smp 4
-net nic,vlan=0,macaddr=52-54-00-B3-47-55,model=rtl8139
-net user,hostfwd=tcp::9000-:80
-m 1024
</source>
</source>

Latest revision as of 08:11, 13 May 2020

Install Ubuntu 20.04 LTS on QEMU for Windows

List available accelerators

qemu-system-x86_64 -accel help
Accelerators supported in QEMU binary:
hax
whpx
tcg

Performance comparison between accelerators

Read this topic "Meeting Minimum Hardware Requirements" first.

Tiny Code Generator

It sucks ...

# Single thread
qemu-system-x86_64 -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G

# Multithread
qemu-system-x86_64 -accel tcg,thread=multi -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G

Intel HAXM

Need to install Intel HAXM first, and disable Hyper-V.
If Docker Desktop was installed, this is not a good solution.

qemu-system-x86_64 -accel hax -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
Failed to open the HAX device!
Open HAX device failed
Failed to get Hax capability:6u
No accelerator found.

Windows Hypervisor Platform (recommended)

# with Windows Hypervisor Platform - good!
qemu-system-x86_64 -accel whpx -cdrom ubuntu-20.04-desktop-amd64.iso -boot once=d -m 1G
Windows Hypervisor Platform accelerator is operational