def test_cpu_usage_for_process_calculates_result(self):
"""
cputime_for_process correctly calculates the CPU percentage for
a process by dividing the total cputime by the total wallclock
time across all the samples.
"""
process_name = 'test-process'
results = [
{
'metric': {
'type': 'cputime'
},
'process': process_name,
'value': 10,
'wallclock': 60
},
{
'metric': {
'type': 'cputime'
},
'process': process_name,
'value': 30,
'wallclock': 100
},
]
cputime_result = cpu_usage_for_process(results, process_name)
# Total CPU time: 40
# Total wallclock time: 160
self.assertEqual(cputime_result, 0.25)
def test_cpu_usage_for_process_calculates_result(self):
"""
cputime_for_process correctly calculates the CPU percentage for
a process by dividing the total cputime by the total wallclock
time across all the samples.
"""
process_name = 'test-process'
results = [
{
'metric': {
'type': 'cputime'
},
'process': process_name,
'value': 10,
'wallclock': 60
},
{
'metric': {
'type': 'cputime'
},
'process': process_name,
'value': 30,
'wallclock': 100
},
]
cputime_result = cpu_usage_for_process(results, process_name)
# Total CPU time: 40
# Total wallclock time: 160
self.assertEqual(cputime_result, 0.25)
def test_cpu_usage_for_process_no_matching_results(self):
"""
cputime_for_process only considers results which have the
'cputime' metric type and match the specified process name.
None is returned if no results match.
"""
process_name = "test-process"
results = [
{"metric": {"type": "wallclock"}, "process": process_name},
{"metric": {"type": "cputime"}, "process": "another-process"},
]
cputime_result = cpu_usage_for_process(results, process_name)
self.assertEqual(cputime_result, None)
def test_cpu_usage_for_process_calculates_result(self):
"""
cputime_for_process correctly calculates the CPU percentage for
a process by dividing the total cputime by the total wallclock
time across all the samples.
"""
process_name = "test-process"
results = [
{"metric": {"type": "cputime"}, "process": process_name, "value": 10, "wallclock": 60},
{"metric": {"type": "cputime"}, "process": process_name, "value": 30, "wallclock": 100},
]
cputime_result = cpu_usage_for_process(results, process_name)
# Total CPU time: 40
# Total wallclock time: 160
self.assertEqual(cputime_result, 0.25)
def test_cpu_usage_for_process_no_matching_results(self):
"""
cputime_for_process only considers results which have the
'cputime' metric type and match the specified process name.
None is returned if no results match.
"""
process_name = 'test-process'
results = [
{
'metric': {
'type': 'wallclock'
},
'process': process_name
},
{
'metric': {
'type': 'cputime'
},
'process': 'another-process'
},
]
cputime_result = cpu_usage_for_process(results, process_name)
self.assertEqual(cputime_result, None)
def test_cpu_usage_for_process_no_matching_results(self):
"""
cputime_for_process only considers results which have the
'cputime' metric type and match the specified process name.
None is returned if no results match.
"""
process_name = 'test-process'
results = [
{
'metric': {
'type': 'wallclock'
},
'process': process_name
},
{
'metric': {
'type': 'cputime'
},
'process': 'another-process'
},
]
cputime_result = cpu_usage_for_process(results, process_name)
self.assertEqual(cputime_result, None)