Package: libvirt-daemon Version: 2.4.0-1+b1 Severity: normal Tags: patch Dear Maintainer,
Pinning domain processes and vCPUs to physical CPUs increases cache
efficiency [0]. One can add a ‘cpuset’ attribute to the <vcpu> element
to explicitely list physical CPU numbers [1]; however I find it more
flexible to specify a placement *mode* instead, and let libvirtd query
numad(8) to find the best alignment for the guest's CPUs and memory
resources.
Unfortunately adding the following snippet yields "numad is not
available on this host" and the domain refuses to start.
<vcpu placement='auto'>2</vcpu>
<numatune>
<memory mode='preferred' placement='auto'/>
</numatune>
It turns out that while libvirtd is compiled with --with-numactl, it's
missing --with-numad. The enclosed patch passes this flag, and adds
‘numad’ to Build-Depends and libvirt-daemon's Suggests.
I also had to regorganize the PATH in which to search for the numad
binary, probably because I use split-usr. (Without the second patch,
the binary is hardcoded to /bin/numad while the numad package ships
/usr/bin/numad instead.)
Thanks for maintaining libvirt in Debian!
Cheers
--
Guilhem.
[0]
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Virtualization_Tuning_and_Optimization_Guide/index.html#chap-Virtualization_Tuning_Optimization_Guide-NUMA
[1] https://libvirt.org/formatdomain.html#elementsCPUAllocation
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (990, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 4.8.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages libvirt-daemon depends on:
ii libapparmor1 2.10.95-6
ii libaudit1 1:2.6.7-1
ii libavahi-client3 0.6.32-1
ii libavahi-common3 0.6.32-1
ii libblkid1 2.29-1
ii libc6 2.24-5
ii libcap-ng0 0.7.7-3
ii libdbus-1-3 1.10.12-1
ii libdevmapper1.02.1 2:1.02.133-1
ii libfuse2 2.9.7-1
ii libgnutls30 3.5.5-6
ii libnetcf1 1:0.2.8-1+b1
ii libnl-3-200 3.2.27-1
ii libnl-route-3-200 3.2.27-1
ii libnuma1 2.0.11-2
ii libparted2 3.2-16+b1
ii libpcap0.8 1.8.1-3
ii libpciaccess0 0.13.4-1
ii librados2 0.80.11-1.1
ii librbd1 0.80.11-1.1
ii libsasl2-2 2.1.27~72-g88d82a3+dfsg-1
ii libselinux1 2.6-3
ii libssh2-1 1.7.0-1
ii libudev1 232-2
ii libvirt0 2.4.0-1+b1
ii libxen-4.8 4.8.0~rc3-1
ii libxenstore3.0 4.8.0~rc3-1
ii libxml2 2.9.4+dfsg1-2.1
ii libyajl2 2.1.0-2
Versions of packages libvirt-daemon recommends:
pn libxml2-utils <none>
ii netcat-openbsd 1.105-7
ii qemu-kvm 1:2.7+dfsg-3+b1
Versions of packages libvirt-daemon suggests:
ii libvirt-daemon-system 2.4.0-1+b1
-- no debconf information
diff --git a/debian/control b/debian/control
index 3b8dd8e..bc36ead 100644
--- a/debian/control
+++ b/debian/control
@@ -34,6 +34,7 @@ Build-Depends:
libyajl-dev,
libpcap0.8-dev,
libnuma-dev [amd64 arm64 i386 ia64 mips mipsel powerpc ppc64 ppc64el],
+ numad [amd64 arm64 i386 ia64 mips mipsel powerpc ppc64 ppc64el],
radvd [linux-any],
libnetcf-dev (>= 1:0.2.3-3~) [linux-any],
libsanlock-dev [linux-any],
@@ -106,6 +107,7 @@ Recommends:
netcat-openbsd,
Suggests:
libvirt-daemon-system,
+ numad,
Description: Virtualization daemon
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). The library aims at providing
diff --git a/debian/rules b/debian/rules
index ec557c4..6e0a416 100755
--- a/debian/rules
+++ b/debian/rules
@@ -45,9 +45,9 @@ ifneq (,$(findstring $(DEB_HOST_ARCH_OS), linux))
WITH_DTRACE = --without-dtrace
endif
ifneq (,$(findstring $(DEB_HOST_ARCH), amd64 arm64 i386 ia64 mips mipsel powerpc ppc64el))
- WITH_NUMA = --with-numactl
+ WITH_NUMA = --with-numactl --with-numad
else
- WITH_NUMA = --without-numactl
+ WITH_NUMA = --without-numactl --without-numad
endif
ifneq (,$(findstring $(DEB_HOST_ARCH), ia64))
WITH_LXC = --without-lxc
@@ -68,7 +68,7 @@ else
WITH_MACVTAP = --without-macvtap
WITH_NETWORK = --without-network
WITH_LXC = --without-lxc
- WITH_NUMA = --without-numactl
+ WITH_NUMA = --without-numactl --without-numad
WITH_NETCF = --without-netcf
WITH_INIT_SCRIPT = --with-init-script=none
WITH_SYSTEMD = --without-systemd-daemon
--
2.10.2
diff --git a/configure.ac b/configure.ac
index dfc536f..bde6bbd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1501,7 +1501,7 @@ AC_ARG_WITH([numad],
if test "$with_numad" != "no" ; then
fail=0
- AC_PATH_PROG([NUMAD], [numad], [], [/bin:/usr/bin:/usr/sbin])
+ AC_PATH_PROG([NUMAD], [numad], [], [/usr/bin:/bin:/usr/sbin])
if test "$with_numad" = "check"; then
test "$with_numactl" = "yes" || fail=1
--
2.10.2
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