I have discussed the matter with Guido Günther from the Debian team.
After some testing he reenabled the numa feature in the debian package:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648323
Would you like to follow him?
** Bug watch added: Debian Bug tracker #648323
Thanks very much, Ralf - we will sync that package shortly.
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https://bugs.launchpad.net/bugs/614322
Title:
libvirt not recognizing NUMA architecture
To manage
I can confirm this and I am very dissapointed that still after more than a year
this issue has not been fixed.
I am currently running Ubuntu precise (development, the next lts) on
HP DL 585 G2 with 4 Dual Cores and thus 4 Numa cells.
Numactl shows the hardware:
# numactl --show
policy: default
** Changed in: libvirt (Ubuntu)
Status: Opinion = Confirmed
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https://bugs.launchpad.net/bugs/614322
Title:
libvirt not recognizing NUMA architecture
To manage
Actually, the debian package's 0.7.7-3 changelog entry from Mar 2010
shows:
* [b69d3cc] Revert Enable NUMA support since it breaks the python
bindings.
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Hi,
noone seems to have commented on the reason why numa is disabled in
libvirt. In Ubuntu, both libnuma1 and numactl are in universe. So in
order toenable those in libvirt (which is in main), we would have to do
a main inclusion request (MIR) for those.
But, they are also disabled in debian.
Regarding the change from Opinion to Confirmed, ordinarily I'd object,
but in this case I agree - this *is* a bug, whose resolution potentially
depends on some other bugs. I don't object to numa being enabled if the
underlying bugs get fixed, so if you have time, by all means please do
work on
I can confirm this.
Most of our hosts have 64GB RAM and 2 Intel Nehalem hexa-cores.
With 3 VM's using 16GB RAM each.
I noticed performance degredation and the host also swapped out a lot of
memory. The swapping degraded performance dramatically.
vm.swappiness=0 in /etc/sysctl.conf did not help.
You can easily compile the latest libvirt version yourself:
aptitude install build-essential, libxml2-dev, libgnutls-dev, libdevmapper-dev,
libparted0-dev, libvirt-dev
./configure –prefix=/usr –exec-prefix=/usr –libdir=/usr/lib
–includedir=/usr/include make make install
There is a configure
yes I see this with 10.04 and 10.10 it appears that libvirt was not
built with libnuma. I also agree and would like to see this corrected.
10.04 libvirt version 0.7.5
10.10 libvirt version 0.8.3
if you need the capabilities I will be more than happy to upload
--
libvirt not recognizing
So, any news? Is anybody able to confirm this?
Frank
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libvirt not recognizing NUMA architecture
https://bugs.launchpad.net/bugs/614322
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Hi there,
I used the latest RHEL6 Beta with libvirt-0.8.1-13.el6.x86_64 and
the latest CentOS 5.5 with libvirt-0.6.3-33.el5_5.1.
I tried Ubuntu 8.04 and 10.04 and both show about 50% of the performance that
RHEL and CentOS do.
This is a serious problem. No company, that wants to virtualize
** Package changed: linux (Ubuntu) = libvirt (Ubuntu)
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libvirt not recognizing NUMA architecture
https://bugs.launchpad.net/bugs/614322
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Thanks for the bug report. Which version are you running on redhat and
centos?
** Changed in: libvirt (Ubuntu)
Importance: Undecided = Wishlist
** Changed in: libvirt (Ubuntu)
Status: New = Opinion
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libvirt not recognizing NUMA architecture
https://bugs.launchpad.net/bugs/614322
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