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
98
99
100
101
102
103
104
105
106
107
108
109
|
# Copyright (c) 2022 Cisco and/or its affiliates.
# 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.
"""Perf Stat performance bundle."""
from logging import getLogger
import sys
import subprocess
from .constants import Constants
class BundlePerfStat:
"""
Creates a Perf stat object. This is the main object for defining a Perf Stat
program and interacting with its output.
Syntax: perf stat [-e <EVENT> | --event=EVENT] [-a] — <command> [<options>]
"""
def __init__(self, program, serializer, hook):
"""Initialize Bundle Perf Stat event class.
:param program: events
:param serializer: Metric serializer.
:param hook: Process ID.
:type program: dict
:type serializer: Serializer
:type hook: int
"""
self.metrics = program[u"metrics"]
self.events = program[u"events"]
self.api_replies_list = list()
self.serializer = serializer
self.hook = hook
def attach(self, duration=1):
"""
Performs perf stat.
:param duration: Time how long perf stat is collecting data (in
seconds). Default value is 1 second.
:type duration: int
EventCode, UMask, EdgeDetect, AnyThread, Invert, CounterMask
"""
try:
self.serializer.create(metrics=self.metrics)
for event in self.events:
text = subprocess.getoutput(
f"""sudo perf stat -x\; -e\
'{{cpu/event={hex(event[u"EventCode"])},\
umask={hex(event[u"UMask"])}/u}}'\
-a --per-thread\
sleep {duration}"""
)
if text == u"":
getLogger("console_stdout").info(event[u"name"])
continue
if u";" not in text:
getLogger("console_stdout").info(
f"Could not get counters for event \"{event[u'name']}\""
f". Is it supported by CPU?"
)
continue
for line in text.splitlines():
item = dict()
labels = dict()
item[u"name"] = event[u"name"]
item[u"value"] = line.split(";")[1]
labels["thread"] = u"-".join(
line.split(";")[0].split("-")[0:-1]
)
labels["pid"] = line.split(";")[0].split("-")[-1]
labels["name"] = item[u"name"]
item[u"labels"] = labels
getLogger("console_stdout").info(item)
self.api_replies_list.append(item)
except AttributeError:
getLogger("console_stderr").error(f"Could not successfully run "
f"perf stat command.")
sys.exit(Constants.err_linux_perf_stat)
def detach(self):
pass
def fetch_data(self):
pass
def process_data(self):
"""
Post process API replies.
"""
for item in self.api_replies_list:
self.serializer.serialize(
metric=item[u"name"], labels=item[u"labels"], item=item
)
|
