mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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tracer/gsttr-stats: split Analyzer into Analyzer and AnalysisRunner
This lets us run chain analyzers. Move the stats collection into the gsttr-stats tool.
This commit is contained in:
Stefan Sauer
parent
a066c2f332
commit
68d1925826
4 changed files with 142 additions and 115 deletions
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@ -6,8 +6,100 @@ GST_DEBUG="GST_TRACER:7" GST_TRACERS="stats;rusage;latency" GST_DEBUG_FILE=trace
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python3 gsttr-stats.py trace.log
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'''
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# TODO:
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# options
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# - list what is in the log
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# - select which values to extract
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# - live-update interval (for file=='-')
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from tracer.analysis_runner import AnalysisRunner
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from tracer.analyzer import Analyzer
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from tracer.parser import Parser
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from tracer.structure import Structure
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_SCOPE_RELATED_TO = {
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'GST_TRACER_VALUE_SCOPE_PAD': 'Pad',
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'GST_TRACER_VALUE_SCOPE_ELEMENT': 'Element',
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'GST_TRACER_VALUE_SCOPE_THREAD': 'Thread',
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'GST_TRACER_VALUE_SCOPE_PROCESS': 'Process',
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}
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_NUMERIC_TYPES = ('int', 'uint', 'gint', 'guint', 'gint64', 'guint64')
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class Stats(Analyzer):
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def __init__(self):
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super(Stats, self).__init__()
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self.records = {}
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self.data = {}
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def handle_tracer_class(self, event):
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s = Structure(event[Parser.F_MESSAGE])
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# TODO only for debugging
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#print("tracer class:", repr(s))
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name = s.name[:-len('.class')]
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record = {
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'class': s,
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'scope' : {},
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'value' : {},
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}
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self.records[name] = record
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for k,v in s.values.items():
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if v.name == 'scope':
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# TODO only for debugging
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#print("scope: [%s]=%s" % (k, v))
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record['scope'][k] = v
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elif v.name == 'value':
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# skip non numeric and those without min/max
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if (v.values['type'] in _NUMERIC_TYPES and
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'min' in v.values and 'max' in v.values):
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# TODO only for debugging
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#print("value: [%s]=%s" % (k, v))
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record['value'][k] = v
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#else:
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# TODO only for debugging
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#print("skipping value: [%s]=%s" % (k, v))
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def handle_tracer_entry(self, event):
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# use first field in message (structure-id) if none
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if event[Parser.F_FUNCTION]:
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# TODO: parse params in event[Parser.F_MESSAGE]
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entry_name = event[Parser.F_FUNCTION]
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else:
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s = Structure(event[Parser.F_MESSAGE])
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entry_name = s.name
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record = self.records.get(entry_name)
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if record:
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# aggregate event based on class
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for sk,sv in record['scope'].items():
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# look up bin by scope (or create new)
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key = (_SCOPE_RELATED_TO[sv.values['related-to']] +
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":" + str(s.values[sk]))
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scope = self.data.get(key)
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if not scope:
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scope = {}
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self.data[key] = scope
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for vk,vv in record['value'].items():
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key = entry_name + "/" + vk
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data = scope.get(key)
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if not data:
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data = {
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'num': 0,
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'sum': 0,
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}
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if 'max' in vv.values and 'min' in vv.values:
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data['min'] = int(vv.values['max'])
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data['max'] = int(vv.values['min'])
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scope[key] = data
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# update min/max/sum and count via value
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dv = int(s.values[vk])
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# TODO: skip 64bit -1 values ?
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data['num'] += 1
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data['sum'] += dv
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if 'min' in data:
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data['min'] = min(dv, data['min'])
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if 'max' in data:
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data['max'] = max(dv, data['max'])
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def format_ts(ts):
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sec = 1e9
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@ -23,8 +115,10 @@ if __name__ == '__main__':
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args = parser.parse_args()
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with Parser(args.file) as log:
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stats = Analyzer(log)
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stats.run()
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stats = Stats()
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runner = AnalysisRunner(log)
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runner.add_analyzer(stats)
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runner.run()
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# iterate scopes
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for sk,sv in stats.data.items():
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38
tracer/tracer/analysis_runner.py
Normal file
38
tracer/tracer/analysis_runner.py
Normal file
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@ -0,0 +1,38 @@
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from tracer.parser import Parser
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from tracer.structure import Structure
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class AnalysisRunner(object):
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'''Iterate over a log and dispatch to a set of analyzers'''
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def __init__(self, log):
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self.log = log
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self.analyzers = []
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def add_analyzer(self, analyzer):
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self.analyzers.append(analyzer)
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def handle_tracer_class(self, event):
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for analyzer in self.analyzers:
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analyzer.handle_tracer_class(event)
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def handle_tracer_entry(self, event):
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for analyzer in self.analyzers:
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analyzer.handle_tracer_entry(event)
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def is_tracer_class(self, event):
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return (event[Parser.F_FILENAME] == 'gsttracerrecord.c' and
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event[Parser.F_CATEGORY] == 'GST_TRACER' and
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'.class' in event[Parser.F_MESSAGE])
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def is_tracer_entry(self, event):
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return (not event[Parser.F_LINE] and not event[Parser.F_FILENAME])
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def run(self):
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for event in self.log:
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# check if it is a tracer.class or tracer event
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if self.is_tracer_class(event):
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self.handle_tracer_class(event)
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elif self.is_tracer_entry(event):
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self.handle_tracer_entry(event)
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#else:
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# print("unhandled:", repr(event))
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@ -1,18 +1,18 @@
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import unittest
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from tracer.analyzer import Analyzer
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from tracer.analysis_runner import AnalysisRunner
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TRACER_CLASS = ('0:00:00.036373170', 1788, '0x23bca70', 'TRACE', 'GST_TRACER', 'gsttracerrecord.c', 110, 'gst_tracer_record_build_format', None, r'latency.class, src=(structure)"scope\\,\\ type\\=\\(type\\)gchararray\\,\\ related-to\\=\\(GstTracerValueScope\\)GST_TRACER_VALUE_SCOPE_PAD\\;", sink=(structure)"scope\\,\\ type\\=\\(type\\)gchararray\\,\\ related-to\\=\\(GstTracerValueScope\\)GST_TRACER_VALUE_SCOPE_PAD\\;", time=(structure)"value\\,\\ type\\=\\(type\\)guint64\\,\\ description\\=\\(string\\)\\"time\\\\\\ it\\\\\\ took\\\\\\ for\\\\\\ the\\\\\\ buffer\\\\\\ to\\\\\\ go\\\\\\ from\\\\\\ src\\\\\\ to\\\\\\ sink\\\\\\ ns\\"\\,\\ flags\\=\\(GstTracerValueFlags\\)GST_TRACER_VALUE_FLAGS_AGGREGATED\\,\\ min\\=\\(guint64\\)0\\,\\ max\\=\\(guint64\\)18446744073709551615\\;";')
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TRACER_ENTRY = ('0:00:00.142391137', 1788, '0x7f8a201056d0', 'TRACE', 'GST_TRACER', '', 0, '', None, r'latency, src=(string)source_src, sink=(string)pulsesink0_sink, time=(guint64)47091349;')
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class TestAnalyzer(unittest.TestCase):
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class TestAnalysisRunner(unittest.TestCase):
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def test_detect_tracer_class(self):
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a = Analyzer(None)
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a = AnalysisRunner(None)
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self.assertTrue(a.is_tracer_class(TRACER_CLASS))
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def test_detect_tracer_entry(self):
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a = Analyzer(None)
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a = AnalysisRunner(None)
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self.assertTrue(a.is_tracer_entry(TRACER_ENTRY))
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@ -1,116 +1,11 @@
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import re
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import sys
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from tracer.parser import Parser
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from tracer.structure import Structure
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_SCOPE_RELATED_TO = {
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'GST_TRACER_VALUE_SCOPE_PAD': 'Pad',
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'GST_TRACER_VALUE_SCOPE_ELEMENT': 'Element',
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'GST_TRACER_VALUE_SCOPE_THREAD': 'Thread',
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'GST_TRACER_VALUE_SCOPE_PROCESS': 'Process',
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}
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_NUMERIC_TYPES = ('int', 'uint', 'gint', 'guint', 'gint64', 'guint64')
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class Analyzer(object):
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'''Base class for a gst tracer analyzer.'''
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def __init__(self, log):
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self.log = log
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self.records = {}
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self.data = {}
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def __init__(self):
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pass
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def handle_tracer_class(self, event):
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s = Structure(event[Parser.F_MESSAGE])
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# TODO only for debugging
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#print("tracer class:", repr(s))
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name = s.name[:-len('.class')]
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record = {
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'class': s,
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'scope' : {},
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'value' : {},
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}
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self.records[name] = record
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for k,v in s.values.items():
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if v.name == 'scope':
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# TODO only for debugging
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#print("scope: [%s]=%s" % (k, v))
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record['scope'][k] = v
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elif v.name == 'value':
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# skip non numeric and those without min/max
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if (v.values['type'] in _NUMERIC_TYPES and
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'min' in v.values and 'max' in v.values):
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# TODO only for debugging
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#print("value: [%s]=%s" % (k, v))
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record['value'][k] = v
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#else:
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# TODO only for debugging
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#print("skipping value: [%s]=%s" % (k, v))
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pass
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def handle_tracer_entry(self, event):
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# use first field in message (structure-id) if none
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if event[Parser.F_FUNCTION]:
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# TODO: parse params in event[Parser.F_MESSAGE]
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vmethod_name = event[Parser.F_FUNCTION]
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else:
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s = Structure(event[Parser.F_MESSAGE])
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vmethod_name = s.name
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record = self.records.get(vmethod_name)
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if record:
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# aggregate event based on class
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for sk,sv in record['scope'].items():
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# look up bin by scope (or create new)
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key = (_SCOPE_RELATED_TO[sv.values['related-to']] +
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":" + str(s.values[sk]))
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scope = self.data.get(key)
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if not scope:
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scope = {}
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self.data[key] = scope
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for vk,vv in record['value'].items():
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key = vmethod_name + "/" + vk
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data = scope.get(key)
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if not data:
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data = {
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'num': 0,
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'sum': 0,
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}
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if 'max' in vv.values and 'min' in vv.values:
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data['min'] = int(vv.values['max'])
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data['max'] = int(vv.values['min'])
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scope[key] = data
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# update min/max/sum and count via value
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dv = int(s.values[vk])
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data['num'] += 1
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data['sum'] += dv
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if 'min' in data:
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data['min'] = min(dv, data['min'])
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if 'max' in data:
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data['max'] = max(dv, data['max'])
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# TODO: check if self has a catch-all handler and call first (check this in init)
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# - we can use this to chain filters, allthough the chained filter
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# would be doing the same as below
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# check if self['vmethod'] is a function, if so call
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vmethod = getattr (self, vmethod_name, None)
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if callable(vmethod):
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vmethod (event)
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def is_tracer_class(self, event):
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return (event[Parser.F_FILENAME] == 'gsttracerrecord.c' and
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event[Parser.F_CATEGORY] == 'GST_TRACER' and
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'.class' in event[Parser.F_MESSAGE])
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def is_tracer_entry(self, event):
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return (not event[Parser.F_LINE] and not event[Parser.F_FILENAME])
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def run(self):
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for event in self.log:
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# check if it is a tracer.class or tracer event
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if self.is_tracer_class(event):
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self.handle_tracer_class(event)
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elif self.is_tracer_entry(event):
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self.handle_tracer_entry(event)
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#else:
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# print("unhandled:", repr(event))
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pass
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