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authorMartin Klozik <martinx.klozik@intel.com>2016-09-20 15:49:46 +0100
committerMartin Klozik <martinx.klozik@intel.com>2016-10-05 12:39:17 +0100
commitf437566cf8c52619d062dd05447e6d512a138ce9 (patch)
tree1d500099492721c56acde5f5b001634900f5855b /vnfs/qemu/qemu.py
parente3c52e2eeacc1ec995b9492ce8315fb166886fdd (diff)
integration: Test vHost User numa awareness
Open vSwitch with DPDK can optimize memory usage in case of NUMA architecture to avoid unnecessary memory access across NUMA slots. In a nutshell, PMD threads serving virtual NICs are co-located at the same NUMA slot as QEMU instance, which is using these NICs. This patch adds new (functional) integration testcase, which verifies OVS vHost User numa awareness feature. Step driven test objects were updated to allow a call of OS utilies and evaluation of conditions. Also the documentation was updated with the list of supported test objects and their methods. JIRA: VSPERF-377 Change-Id: I184e71e066d27b5b9fc9e6a9f7e240e2d1b5a0fa Signed-off-by: Martin Klozik <martinx.klozik@intel.com> Reviewed-by: Maryam Tahhan <maryam.tahhan@intel.com> Reviewed-by: Ciara Loftus <ciara.loftus@intel.com> Reviewed-by: Al Morton <acmorton@att.com> Reviewed-by: Christian Trautman <ctrautma@redhat.com> Reviewed-by: Bill Michalowski <bmichalo@redhat.com> Reviewed-by: Antonio Fischetti <antonio.fischetti@intel.com>
Diffstat (limited to 'vnfs/qemu/qemu.py')
-rw-r--r--vnfs/qemu/qemu.py8
1 files changed, 5 insertions, 3 deletions
diff --git a/vnfs/qemu/qemu.py b/vnfs/qemu/qemu.py
index 01c16a0f..977b7bc1 100644
--- a/vnfs/qemu/qemu.py
+++ b/vnfs/qemu/qemu.py
@@ -83,9 +83,11 @@ class IVnfQemu(IVnf):
name = 'Client%d' % self._number
vnc = ':%d' % self._number
- # don't use taskset to affinize main qemu process; It causes hangup
- # of 2nd VM in case of DPDK. It also slows down VM responsivnes.
- self._cmd = ['sudo', '-E', S.getValue('TOOLS')['qemu-system'],
+ # NOTE: affinization of main qemu process can cause hangup of 2nd VM
+ # in case of DPDK usage. It can also slow down VM response time.
+ cpumask = ",".join(S.getValue('GUEST_CORE_BINDING')[self._number])
+ self._cmd = ['sudo', '-E', 'taskset', '-c', cpumask,
+ S.getValue('TOOLS')['qemu-system'],
'-m', S.getValue('GUEST_MEMORY')[self._number],
'-smp', str(S.getValue('GUEST_SMP')[self._number]),
'-cpu', 'host,migratable=off',