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[libvirt] [libvirt-test-api][PATCH 3/3] Add a new case for getCPUStatus



Signed-off-by: Luyao Huang <lhuang redhat com>
---
 cases/linux_domain.conf    |   6 +++
 repos/domain/cpu_status.py | 113 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 119 insertions(+)
 create mode 100644 repos/domain/cpu_status.py

diff --git a/cases/linux_domain.conf b/cases/linux_domain.conf
index 0a7d134..9f64226 100644
--- a/cases/linux_domain.conf
+++ b/cases/linux_domain.conf
@@ -269,6 +269,12 @@ virconn:connection_security_model
     guestname
         $defaultname
 
+domain:virDomain_getCPUStats
+    guestname
+        $defaultname
+    conn
+        qemu:///system
+
 domain:destroy
     guestname
         $defaultname
diff --git a/repos/domain/cpu_status.py b/repos/domain/cpu_status.py
new file mode 100644
index 0000000..6e511c0
--- /dev/null
+++ b/repos/domain/cpu_status.py
@@ -0,0 +1,113 @@
+#!/usr/bin/env python
+import libvirt
+from libvirt import libvirtError
+from  utils import utils
+
+required_params = ('guestname',)
+optional_params = {'conn': 'qemu:///system'}
+
+ONLINE_CPU = '/sys/devices/system/cpu/online'
+CGROUP_PERCPU = '/sys/fs/cgroup/cpuacct/machine.slice/machine-qemu\\x2d%s.scope/cpuacct.usage_percpu'
+CGROUP_PERVCPU = '/sys/fs/cgroup/cpuacct/machine.slice/machine-qemu\\x2d%s.scope/vcpu%d/cpuacct.usage_percpu'
+CGROUP_USAGE = '/sys/fs/cgroup/cpuacct/machine.slice/machine-qemu\\x2d%s.scope/cpuacct.usage'
+CGROUP_STAT = '/sys/fs/cgroup/cpuacct/machine.slice/machine-qemu\\x2d%s.scope/cpuacct.stat'
+
+def getcputime(a):
+    return open(a[0]).read().split()[a[1]]
+
+def virtgetcputime(a):
+    return a[0].getCPUStats(0)[a[1]][a[2]]
+
+def getvcputime(a):
+    ret = 0
+    for i in range(int(a[0])):
+        ret += int(open(CGROUP_PERVCPU % (a[1], i)).read().split()[a[2]])
+
+    return ret
+
+def virtgettotalcputime(a):
+    return a[0].getCPUStats(1)[0][a[1]]
+
+def virtgettotalcputime2(a):
+    return a[0].getCPUStats(1)[0][a[1]]/10000000
+
+def cpu_status(params):
+    """
+       test API for getCPUStats in class virDomain
+    """
+    logger = params['logger']
+    fail=0
+
+    cpu = utils.file_read(ONLINE_CPU)
+    logger.info("host online cpulist is %s" % cpu)
+
+    cpu_tuple = utils.param_to_tuple_nolength(cpu)
+    if not cpu_tuple:
+        logger.info("error in function param_to_tuple_nolength")
+        return 1
+
+    try:
+        conn = libvirt.open(params['conn'])
+
+        logger.info("get connection to libvirtd")
+        guest = params['guestname']
+        vm = conn.lookupByName(guest)
+        vcpus = vm.info()[3]
+        for n in range(len(cpu_tuple)):
+            if not cpu_tuple[n]:
+                continue
+
+            D = utils.get_standard_deviation(getcputime, virtgetcputime, \
+                [CGROUP_PERCPU % guest, n], [vm,n,'cpu_time'])
+            logger.info("Standard Deviation for host cpu %d cputime is %d" % (n, D))
+
+            """ expectations 403423 is a average collected in a x86_64 low load machine"""
+            if D > 403423*5:
+                fail=1
+                logger.info("FAIL: Standard Deviation is too big \
+                             (biger than %d) for host cpu %d" % (403423*5, n))
+
+            D = utils.get_standard_deviation(getvcputime, virtgetcputime, \
+                [vcpus, guest, n], [vm,n,'vcpu_time'])
+            logger.info("Standard Deviation for host cpu %d vcputime is %d" % (n, D))
+
+            """ expectations 4034 is a average collected in a x86_64 low load machine"""
+            if D > 4034*5*vcpus:
+                fail=1
+                logger.info("FAIL: Standard Deviation is too big \
+                             (biger than %d) for host cpu time %d" % (4034*5*vcpus, n))
+
+        D = utils.get_standard_deviation(getcputime, virtgettotalcputime, \
+            [CGROUP_USAGE % guest, 0], [vm,'cpu_time'])
+        logger.info("Standard Deviation for host cpu total cputime is %d" % D)
+
+        """ expectations 313451 is a average collected in a x86_64 low load machine"""
+        if D > 313451*5*len(cpu_tuple):
+            fail=1
+            logger.info("FAIL: Standard Deviation is too big \
+                         (biger than %d) for host cpu time %d" % (313451*5*len(cpu_tuple), n))
+
+        D = utils.get_standard_deviation(getcputime, virtgettotalcputime2, \
+            [CGROUP_STAT % guest, 3], [vm,'system_time'])
+        logger.info("Standard Deviation for host cpu total system time is %d" % D)
+
+        """ expectations 10 is a average collected in a x86_64 low load machine"""
+        if D > 10*5:
+            fail=1
+            logger.info("FAIL: Standard Deviation is too big \
+                         (biger than %d) for host system cpu time %d" % (10*5, n))
+
+        D = utils.get_standard_deviation(getcputime, virtgettotalcputime2, \
+            [CGROUP_STAT % guest, 1], [vm,'user_time'])
+        logger.info("Standard Deviation for host cpu total user time is %d" % D)
+
+        """ expectations 10 is a average collected in a x86_64 low load machine"""
+        if D > 10*5:
+            fail=1
+            logger.info("FAIL: Standard Deviation is too big \
+                         (biger than %d) for host user cpu time %d" % (10*5, n))
+
+    except libvirtError, e:
+        logger.error("API error message: %s" % e.message)
+        fail=1
+    return fail
-- 
1.8.3.1


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