10:40 a.m.
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(a)redhat.com>:
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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