4 ## Copyright (c) 2020 Intel Corporation
6 ## Licensed under the Apache License, Version 2.0 (the "License");
7 ## you may not use this file except in compliance with the License.
8 ## You may obtain a copy of the License at
11 ## http://www.apache.org/licenses/LICENSE-2.0
13 ## Unless required by applicable law or agreed to in writing, software
14 ## distributed under the License is distributed on an "AS IS" BASIS,
15 ## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 ## See the License for the specific language governing permissions and
17 ## limitations under the License.
20 from past.utils import old_div
24 from rapid_log import RapidLog
25 from rapid_test import RapidTest
27 class IrqTest(RapidTest):
29 Class to manage the irq testing
31 def __init__(self, test_param, runtime, testname, environment_file,
33 super().__init__(test_param, runtime, testname, environment_file)
34 self.machines = machines
37 RapidLog.info("+----------------------------------------------------------------------------------------------------------------------------")
38 RapidLog.info("| Measuring time probably spent dealing with an interrupt. Interrupting DPDK cores for more than 50us might be problematic ")
39 RapidLog.info("| and result in packet loss. The first row shows the interrupted time buckets: first number is the bucket between 0us and ")
40 RapidLog.info("| that number expressed in us and so on. The numbers in the other rows show how many times per second, the program was ")
41 RapidLog.info("| interrupted for a time as specified by its bucket. '0' is printed when there are no interrupts in this bucket throughout ")
42 RapidLog.info("| the duration of the test. 0.00 means there were interrupts in this bucket but very few. Due to rounding this shows as 0.00 ")
43 RapidLog.info("+----------------------------------------------------------------------------------------------------------------------------")
45 for machine in self.machines:
46 buckets=machine.socket.show_irq_buckets(1)
47 print('Measurement ongoing ... ',end='\r')
48 machine.start() # PROX cores will be started within 0 to 1 seconds
49 # That is why we sleep a bit over 1 second to make sure all cores
52 old_irq = [[0 for x in range(len(buckets))] for y in range(len(machine.get_cores()))]
53 irq = [[0 for x in range(len(buckets))] for y in range(len(machine.get_cores()))]
55 for bucket in buckets:
56 column_names.append('<{}'.format(bucket))
57 column_names[-1] = '>{}'.format(buckets[-2])
58 for j,bucket in enumerate(buckets):
59 for i,irqcore in enumerate(machine.get_cores()):
60 old_irq[i][j] = machine.socket.irq_stats(irqcore,j)
61 # Measurements in the loop above, are updated by PROX every second
62 # This means that taking the same measurement 0.5 second later
63 # might results in the same data or data from the next 1s window
64 time.sleep(float(self.test['runtime']))
66 for i,irqcore in enumerate(machine.get_cores()):
67 row_names.append(irqcore)
68 for j,bucket in enumerate(buckets):
69 diff = machine.socket.irq_stats(irqcore,j) - old_irq[i][j]
73 irq[i][j] = str(round(old_div(diff,float(self.test['runtime'])), 2))
74 # Measurements in the loop above, are updated by PROX every second
75 # This means that taking the same measurement 0.5 second later
76 # might results in the same data or data from the next 1s window
77 # Conclusion: we don't know the exact window size.
78 # Real measurement windows might be wrong by 1 second
79 # This could be fixed in this script by checking this data every
80 # 0.5 seconds Not implemented since we can also run this test for
81 # a longer time and decrease the error. The absolute number of
82 # interrupts is not so important.
84 RapidLog.info('Results for PROX instance %s'%machine.name)
85 RapidLog.info('{:>12}'.format('bucket us') + ''.join(['{:>12}'.format(item) for item in column_names]))
86 for j, row in enumerate(irq):
87 RapidLog.info('Core {:>7}'.format(row_names[j]) + ''.join(['{:>12}'.format(item) for item in row]))
89 variables['test'] = self.test['test']
90 variables['environment_file'] = self.test['environment_file']
91 variables['Machine'] = machine.name
92 for i,irqcore in enumerate(machine.get_cores()):
93 variables['Core'] = '{}'.format(row_names[i])
94 for j,bucket in enumerate(buckets):
95 variables['B{}'.format(column_names[j].replace(">","M").replace("<","").replace(" ",""))] = irq[i][j]
96 self.post_data('rapid_irqtest', variables)