This patch solves the problem with smp parameter.
* cpu_cfs_util - test creates the first VM instead of preprocess
* cpu_share - 'cgroup_use_max_smp' cfg parameter let test calculate smp
* cpuset_cpus - when cpusets is defined it calculates smp from it. Otherwise
user can force test to set smp by cgroup_use_half_smp.
When nothing is specified it tries to run on current VM(s).
Signed-off-by: Lukas Doktor <[email protected]>
---
client/tests/kvm/tests/cgroup.py | 75 +++++++++++++++++++++++++++++++-------
client/virt/guest-hw.cfg.sample | 12 ------
client/virt/subtests.cfg.sample | 21 +++++------
3 files changed, 72 insertions(+), 36 deletions(-)
diff --git a/client/tests/kvm/tests/cgroup.py b/client/tests/kvm/tests/cgroup.py
index 6783b1b..5972ccb 100644
--- a/client/tests/kvm/tests/cgroup.py
+++ b/client/tests/kvm/tests/cgroup.py
@@ -593,6 +593,11 @@ def run_cgroup(test, params, env):
cgroup.initialize(modules)
host_cpus = open('/proc/cpuinfo').read().count('model name')
+ # Create first VM
+ params['smp'] = 1
+ params['vms'] = "vm0"
+ preprocess(test, params, env)
+
error.context("Prepare VMs")
vms = []
sessions = []
@@ -696,6 +701,8 @@ def run_cgroup(test, params, env):
err = "Guest time is not >%s%% %s" % (limit, stats[1:])
logging.error(err)
logging.info("Guest times are over %s%%: %s", limit, stats[1:])
+ else:
+ logging.info("CFS utilisation was over %s", limit)
finally:
error.context("Cleanup")
@@ -724,6 +731,7 @@ def run_cgroup(test, params, env):
"""
Sets cpu.share shares for different VMs and measure the actual
utilisation distribution over physical CPUs
+ @param cfg: cgroup_use_max_smp - use smp = all_host_cpus
@param cfg: cgroup_test_time - test duration '60'
@param cfg: smp - no_vcpus per VM. When smp <= 0 .. smp = no_host_cpus
@param cfg: cgroup_speeds - list of speeds of each vms [vm0, vm1,..].
@@ -754,7 +762,8 @@ def run_cgroup(test, params, env):
host_cpus = open('/proc/cpuinfo').read().count('model name')
# when smp <= 0 use smp = no_host_cpus
vm_cpus = int(params.get('smp', 0)) # cpus per VM
- if vm_cpus <= 0: # smp = no_host_cpu
+ # Use smp = no_host_cpu
+ if vm_cpus <= 0 or params.get('cgroup_use_max_smp') == "yes":
params['smp'] = host_cpus
vm_cpus = host_cpus
no_speeds = len(speeds)
@@ -918,10 +927,13 @@ def run_cgroup(test, params, env):
"""
Pins main_thread and each vcpu acoordingly to scenario setup
and measures physical CPU utilisation.
+ When nothing is set the test uses smp vcpus. When cgroup_cpuset is
+ specified it forces smp to fit cpuset prescription. Last but not least
+ you can force the test to use half of the host cpus.
@warning: Default verification method assumes 100% utilisation on each
used CPU. You can force cgroup_verify results.
+ @param cfg: cgroup_use_half_smp - force smp = no_host_cpus / 2
@param cfg: cgroup_test_time - scenerio duration '1'
- @param cfg: smp - number of virtual cpus
@param cfg: cgroup_limit - allowed threshold '0.05' (5%)
@params cfg: cgroup_cpuset - list of lists defining cpu pinning.
[[1st_scenario],[2nd_scenario], ...]
@@ -983,7 +995,7 @@ def run_cgroup(test, params, env):
for vcpu in cpuset[1:]:
vcpu.split(',')
# Get all usable CPUs for this vcpu
- for vcpu_pin in vcpu:
+ for vcpu_pin in vcpu.split(','):
_ = vcpu_pin.split('-')
if len(_) == 2:
# Range of CPUs
@@ -995,17 +1007,12 @@ def run_cgroup(test, params, env):
return verify
error.context("Init")
- vm_cpus = int(params.get("smp", 1))
cpusets = None
verify = None
- if vm_cpus <= 1:
- raise error.TestNAError("This test requires at least 2 VCPUs.")
try:
cpusets = eval(params.get("cgroup_cpuset", "None"))
- if cpusets:
- for _ in cpusets:
- if len(_) != (vm_cpus + 1):
- raise Exception
+ if not ((type(cpusets) is list) or (cpusets is None)):
+ raise Exception
except Exception:
raise error.TestError("Incorrect configuration: param cgroup_"
"cpuset have to be list of lists, where "
@@ -1014,6 +1021,8 @@ def run_cgroup(test, params, env):
"default.\n%s" % cpusets)
try:
verify = eval(params.get("cgroup_verify", "None"))
+ if not ((type(cpusets) is list) or (cpusets is None)):
+ raise Exception
except Exception:
raise error.TestError("Incorrect configuration: param cgroup_"
"verify have to be list of lists or 'None' "
@@ -1039,6 +1048,38 @@ def run_cgroup(test, params, env):
except (ValueError, IndexError):
raise error.TestFail("Failed to get #CPU from root cgroup. (%s)",
all_cpus)
+ vm_cpus = int(params.get("smp", 1))
+ # If cpuset specified, set smp accordingly
+ if cpusets:
+ if no_cpus < (len(cpusets[0]) - 1):
+ err = ("Not enough host CPUs to run this test with selected "
+ "cpusets (cpus=%s, cpusets=%s)" % (no_cpus, cpusets))
+ logging.error(err)
+ raise error.TestNAError(err)
+ vm_cpus = len(cpusets[0]) - 1 # Don't count main_thread to vcpus
+ for i in range(len(cpusets)):
+ # length of each list have to be 'smp' + 1
+ if len(cpusets[i]) != (vm_cpus + 1):
+ err = ("cpusets inconsistent. %d sublist have different "
+ " length. (param cgroup_cpusets in cfg)." % i)
+ logging.error(err)
+ raise error.TestError(err)
+ # if cgroup_use_half_smp, set smp accordingly
+ elif params.get("cgroup_use_half_smp") == "yes":
+ vm_cpus = no_cpus / 2
+ if no_cpus == 2:
+ logging.warn("Host have only 2 CPUs, using 'smp = all cpus'")
+ vm_cpus = 2
+
+ if vm_cpus <= 1:
+ logging.error("Test requires at least 2 vCPUs.")
+ raise error.TestNAError("Test requires at least 2 vCPUs.")
+ # Check whether smp changed and recreate VM if so
+ if vm_cpus != params.get("smp", 0):
+ logging.info("Expected VM reload.")
+ params['smp'] = vm_cpus
+ vm.create(params=params)
+ # Verify vcpus matches prescription
vcpus = vm.get_vcpu_pids()
if len(vcpus) != vm_cpus:
raise error.TestFail("Incorrect number of vcpu PIDs; smp=%s vcpus="
@@ -1054,7 +1095,14 @@ def run_cgroup(test, params, env):
if cpusets[i][j] == None:
cpusets[i][j] = all_cpus
- if not verify:
+ if verify: # Verify exists, check if it's correct
+ for _ in verify:
+ if len(_) != no_cpus:
+ err = ("Incorrect cgroup_verify. Each verify sublist have "
+ "to have length = no_host_cpus")
+ logging.error(err)
+ raise error.TestError(err)
+ else: # Generate one
error.context("Generating cpusets expected results")
try:
verify = _generate_verification(cpusets, no_cpus)
@@ -1583,8 +1631,9 @@ def run_cgroup(test, params, env):
block created.
memory.memsw.limit_in_bytes: Qemu should be killed with err 137.
@param memsw: Whether to run memsw or rss mem only test
- @param cfg: cgroup_memory_limit_kb - test uses 1.1 * memory_limit
- memory blocks for testing 'by default 1/2 of VM memory'
+ @param cfg: cgroup_memory_limit_kb - (4kb aligned) test uses
+ 1.1 * memory_limit memory blocks for testing
+ 'by default 1/2 of VM memory'
"""
error.context("Init")
try:
diff --git a/client/virt/guest-hw.cfg.sample b/client/virt/guest-hw.cfg.sample
index 9879bbd..0729117 100644
--- a/client/virt/guest-hw.cfg.sample
+++ b/client/virt/guest-hw.cfg.sample
@@ -42,23 +42,11 @@ variants:
variants:
- @up:
no autotest.npb autotest.tsc
- cgroup..cpu_cfs_util:
- smp = 1
- cgroup..cpu_share:
- smp = 0
- cgroup..cpuset_cpus:
- #smp = 4
- smp2:
smp = 2
used_cpus = 2
stress_boot: used_cpus = 10
timedrift.with_load: used_cpus = 100
- cgroup..cpu_cfs_util:
- smp = 1
- cgroup..cpu_share:
- smp = 0
- cgroup..cpuset_cpus:
- #smp = 4
variants:
- @ide:
diff --git a/client/virt/subtests.cfg.sample b/client/virt/subtests.cfg.sample
index 90170c8..5061f42 100644
--- a/client/virt/subtests.cfg.sample
+++ b/client/virt/subtests.cfg.sample
@@ -1303,31 +1303,30 @@ variants:
# cgroup_speeds += "[1024, 1024, 1024, 1024, 1024, 1024]]"
- cpu_cfs_util:
# Test creats VMs according to no_host_cpus
- # We want to be sure 1st VM have only 1 vCPU
- vms = vm1
- smp = 1
+ vms = ""
+ # problem with multiple preprocess, turn off the screendumps
+ take_regular_screendumps = "no"
extra_params += " -snapshot"
cgroup_test = "cpu_cfs_util"
# cgroup_test_time, cgroup_limit
- cpu_share:
# Test creats VMs according to smp and cgroup_speeds
vms = ""
- # When smp = 0 => it sets smp = no_host_cpus (optimal for test)
- smp = 0
# problem with multiple preprocess, turn off the screendumps
take_regular_screendumps = "no"
extra_params += " -snapshot"
cgroup_test = "cpu_share"
- # cgroup_test_time, cgroup_speeds
+ # cgroup_use_max_smp, cgroup_test_time, cgroup_speeds
+ cgroup_use_max_smp == 'yes'
# cgroup_speeds = "[1000, 10000, 100000]"
- cpuset_cpus:
+ extra_params += " -snapshot"
cgroup_test = "cpuset_cpus"
- # cgroup_test_time, cgroup_limit, cgroup_cpuset, cgroup_verify
+ # cgroup_use_half_smp, cgroup_test_time, cgroup_limit,
cgroup_cpuset, cgroup_verify
+ cgroup_use_half_smp = 'yes'
cgroup_test_time = 10
- # smp have to match cpuset scenerios!
- # smp = 4
- # cgroup_cpuset = "[[None, '0,3', '1', '2', '1-2'],
- # cgroup_cpuset += "[None, '0', '1', '0-1', '0-1']]
+ # cgroup_cpuset = [[None, '0,3', '1', '2', '1-2'],
+ # cgroup_cpuset += [None, '0', '1', '0-1', '0-1']]
# cgroup_verify = [[50, 100, 100, 50], [100, 100, 5, 5]]
- cpuset_cpus_switching:
cgroup_test = "cpuset_cpus_switching"
--
1.7.7.6
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
