Hi Daniel,
attached the versions:
# dpkg -l|grep qemu
ii ipxe-qemu 1.0.0+git-20190125.36a4c85-5 all PXE boot firmware - ROM images for qemu
ii libvirt-daemon-driver-qemu 6.4.0-2 ppc64el Virtualization daemon QEMU connection driver
ii qemu 1:5.0-13 ppc64el fast processor emulator, dummy package
ii qemu-block-extra 1:5.0-13 ppc64el extra block backend modules for qemu-system and qemu-utils
ii qemu-system-common 1:5.0-13 ppc64el QEMU full system emulation binaries (common files)
ii qemu-system-data 1:5.0-13 all QEMU full system emulation (data files)
ii qemu-system-gui:ppc64el 1:5.0-13 ppc64el QEMU full system emulation binaries (user interface and audio support)
ii qemu-system-ppc 1:5.0-13 ppc64el QEMU full system emulation binaries (ppc)
ii qemu-system-x86 1:5.0-13 ppc64el QEMU full system emulation binaries (x86)
ii qemu-utils 1:5.0-13 ppc64el QEMU utilities
# dpkg -l|grep libvirt
ii libvirt-clients 6.4.0-2 ppc64el Programs for the libvirt library
ii libvirt-daemon 6.4.0-2 ppc64el Virtualization daemon
ii libvirt-daemon-driver-qemu 6.4.0-2 ppc64el Virtualization daemon QEMU connection driver
ii libvirt-daemon-system 6.4.0-2 ppc64el Libvirt daemon configuration files
ii libvirt-daemon-system-systemd 6.4.0-2 ppc64el Libvirt daemon configuration files (systemd)
ii libvirt-dbus 1.4.0-1 ppc64el libvirt D-Bus API bindings
ii libvirt-glib-1.0-0:ppc64el 3.0.0-1 ppc64el libvirt GLib and GObject mapping library
ii libvirt0:ppc64el 6.4.0-2 ppc64el library for interfacing with different virtualization systems
ii python3-libvirt 6.1.0-1+b1 ppc64el libvirt Python 3 bindings
# qemu-system-x86_64 --version
QEMU emulator version 5.0.0 (Debian 1:5.0-13)
Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
# libvirtd --version
libvirtd (libvirt) 6.4.0
Regards,
Kim
Am 03.08.20, 16:36 schrieb "Daniel P. Berrangé" <berrange@xxxxxxxxxx>:
On Mon, Aug 03, 2020 at 01:45:45PM +0000, Kim-Norman Sahm wrote:
> hi,
>
> i’m running Debian 10 on POWER9 and would like to spawn x86_64 emulated VMs.
> The virtual machine is configured to run with 8 vpus but it’s very slow.
> On the host you can see that the qemu-system-x86_64 process is using just one core!
>
> Ppc64le guests are using multi cores, so its looks like an config problem or software bug with the x86 emulator.
snip
> Does anybody knows this problem?
You've not mentioned what QMEU version or what libvirt version you have.
Historically though emulation was single threaded. Only with MTTCG has
it become multi-threaded and thus able to use all cores for vCPUs. THat
is a few years old now though, so most distros should have MTTCG in some
form or another if reasonably up2date.
Regards,
Daniel
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