1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
#!/usr/bin/python
##
## Copyright (c) 2020 Intel Corporation
##
## Licensed under the Apache License, Version 2.0 (the "License");
## you may not use this file except in compliance with the License.
## You may obtain a copy of the License at
##
##
## http://www.apache.org/licenses/LICENSE-2.0
##
## Unless required by applicable law or agreed to in writing, software
## distributed under the License is distributed on an "AS IS" BASIS,
## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
## See the License for the specific language governing permissions and
## limitations under the License.
##
from past.utils import old_div
import sys
import time
import requests
from rapid_log import RapidLog
from rapid_test import RapidTest
class IrqTest(RapidTest):
"""
Class to manage the irq testing
"""
def __init__(self, test_param, runtime, testname, environment_file,
machines):
super().__init__(test_param, runtime, testname, environment_file)
self.machines = machines
def run(self):
RapidLog.info("+----------------------------------------------------------------------------------------------------------------------------")
RapidLog.info("| Measuring time probably spent dealing with an interrupt. Interrupting DPDK cores for more than 50us might be problematic ")
RapidLog.info("| and result in packet loss. The first row shows the interrupted time buckets: first number is the bucket between 0us and ")
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 ")
RapidLog.info("| interrupted for a time as specified by its bucket. '0' is printed when there are no interrupts in this bucket throughout ")
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 ")
RapidLog.info("+----------------------------------------------------------------------------------------------------------------------------")
sys.stdout.flush()
for machine in self.machines:
buckets=machine.socket.show_irq_buckets(1)
print('Measurement ongoing ... ',end='\r')
machine.start() # PROX cores will be started within 0 to 1 seconds
# That is why we sleep a bit over 1 second to make sure all cores
# are started
time.sleep(1.2)
old_irq = [[0 for x in range(len(buckets))] for y in range(len(machine.get_cores()))]
irq = [[0 for x in range(len(buckets))] for y in range(len(machine.get_cores()))]
column_names = []
for bucket in buckets:
column_names.append('<{}'.format(bucket))
column_names[-1] = '>{}'.format(buckets[-2])
for j,bucket in enumerate(buckets):
for i,irqcore in enumerate(machine.get_cores()):
old_irq[i][j] = machine.socket.irq_stats(irqcore,j)
# Measurements in the loop above, are updated by PROX every second
# This means that taking the same measurement 0.5 second later
# might results in the same data or data from the next 1s window
time.sleep(float(self.test['runtime']))
row_names = []
for i,irqcore in enumerate(machine.get_cores()):
row_names.append(irqcore)
for j,bucket in enumerate(buckets):
diff = machine.socket.irq_stats(irqcore,j) - old_irq[i][j]
if diff == 0:
irq[i][j] = '0'
else:
irq[i][j] = str(round(old_div(diff,float(self.test['runtime'])), 2))
# Measurements in the loop above, are updated by PROX every second
# This means that taking the same measurement 0.5 second later
# might results in the same data or data from the next 1s window
# Conclusion: we don't know the exact window size.
# Real measurement windows might be wrong by 1 second
# This could be fixed in this script by checking this data every
# 0.5 seconds Not implemented since we can also run this test for
# a longer time and decrease the error. The absolute number of
# interrupts is not so important.
machine.stop()
RapidLog.info('Results for PROX instance %s'%machine.name)
RapidLog.info('{:>12}'.format('bucket us') + ''.join(['{:>12}'.format(item) for item in column_names]))
for j, row in enumerate(irq):
RapidLog.info('Core {:>7}'.format(row_names[j]) + ''.join(['{:>12}'.format(item) for item in row]))
variables = {}
variables['test'] = self.test['test']
variables['environment_file'] = self.test['environment_file']
variables['Machine'] = machine.name
for i,irqcore in enumerate(machine.get_cores()):
variables['Core'] = '{}'.format(row_names[i])
for j,bucket in enumerate(buckets):
variables['B{}'.format(column_names[j].replace(">","M").replace("<","").replace(" ",""))] = irq[i][j]
self.post_data('rapid_irqtest', variables)
return (True, None)
|
