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authorkalyanreddy <reddyx.gundarapu@intel.com>2017-05-25 15:01:40 +0530
committerKalyan reddy Gundarapu <reddyx.gundarapu@intel.com>2017-05-31 08:33:17 +0000
commita6a5c653357cf0fd82c489501b6bdbacb2aaf65b (patch)
treee4b423e661fb1f07769025ede12b95f69030f5d1 /vnfs/qemu/qemu.py
parente71e24ec001cfc06e27ce12c081ba749948b4599 (diff)
Qemu: Mechanism to pass extra qemu cpu features and pin vCPU threads
JIRA: VSPERF-510 This patch is used to implement the mechanism to pass extra qemu cpu options required to achieve better results/performance. Also used to implement a mechanism to pin the vCPU threads to another pCPU core which helps in reducing the noise from housekeeping thread and packet loss. Change-Id: Ic40fd47d7c4f5556f7e240c6ca671a0535d06ece Signed-off-by: Gundarapu Kalyan Reddy <reddyx.gundarapu@intel.com>
Diffstat (limited to 'vnfs/qemu/qemu.py')
-rw-r--r--vnfs/qemu/qemu.py9
1 files changed, 5 insertions, 4 deletions
diff --git a/vnfs/qemu/qemu.py b/vnfs/qemu/qemu.py
index a9ce176a..b48f7630 100644
--- a/vnfs/qemu/qemu.py
+++ b/vnfs/qemu/qemu.py
@@ -88,7 +88,7 @@ class IVnfQemu(IVnf):
S.getValue('TOOLS')['qemu-system'],
'-m', S.getValue('GUEST_MEMORY')[self._number],
'-smp', str(S.getValue('GUEST_SMP')[self._number]),
- '-cpu', 'host,migratable=off',
+ '-cpu', str(S.getValue('GUEST_CPU_OPTIONS')[self._number]),
'-drive', 'if={},file='.format(S.getValue(
'GUEST_BOOT_DRIVE_TYPE')[self._number]) +
S.getValue('GUEST_IMAGE')[self._number],
@@ -233,12 +233,13 @@ class IVnfQemu(IVnf):
for cpu in range(0, int(S.getValue('GUEST_SMP')[self._number])):
match = None
+ guest_thread_binding = S.getValue('GUEST_THREAD_BINDING')[self._number]
+ if guest_thread_binding is None:
+ guest_thread_binding = S.getValue('GUEST_CORE_BINDING')[self._number]
for line in output.decode(cur_locale).split('\n'):
match = re.search(thread_id % cpu, line)
if match:
- self._affinitize_pid(
- S.getValue('GUEST_CORE_BINDING')[self._number][cpu],
- match.group(1))
+ self._affinitize_pid(guest_thread_binding[cpu], match.group(1))
break
if not match: