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334 lines
14 KiB
334 lines
14 KiB
6 years ago
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#
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# Copyright (C) 2016 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""
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Inferno is a tool to generate flamegraphs for android programs. It was originally written
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to profile surfaceflinger (Android compositor) but it can be used for other C++ program.
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It uses simpleperf to collect data. Programs have to be compiled with frame pointers which
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excludes ART based programs for the time being.
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Here is how it works:
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1/ Data collection is started via simpleperf and pulled locally as "perf.data".
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2/ The raw format is parsed, callstacks are merged to form a flamegraph data structure.
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3/ The data structure is used to generate a SVG embedded into an HTML page.
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4/ Javascript is injected to allow flamegraph navigation, search, coloring model.
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"""
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import argparse
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import datetime
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import os
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import subprocess
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import sys
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scripts_path = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
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sys.path.append(scripts_path)
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from simpleperf_report_lib import ReportLib
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from utils import log_exit, log_info, AdbHelper, open_report_in_browser
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from data_types import *
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from svg_renderer import *
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def collect_data(args):
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""" Run app_profiler.py to generate record file. """
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app_profiler_args = [sys.executable, os.path.join(scripts_path, "app_profiler.py"), "-nb"]
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if args.app:
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app_profiler_args += ["-p", args.app]
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elif args.native_program:
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app_profiler_args += ["-np", args.native_program]
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else:
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log_exit("Please set profiling target with -p or -np option.")
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if args.compile_java_code:
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app_profiler_args.append("--compile_java_code")
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if args.disable_adb_root:
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app_profiler_args.append("--disable_adb_root")
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record_arg_str = ""
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if args.dwarf_unwinding:
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record_arg_str += "-g "
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else:
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record_arg_str += "--call-graph fp "
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if args.events:
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tokens = args.events.split()
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if len(tokens) == 2:
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num_events = tokens[0]
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event_name = tokens[1]
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record_arg_str += "-c %s -e %s " % (num_events, event_name)
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else:
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log_exit("Event format string of -e option cann't be recognized.")
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log_info("Using event sampling (-c %s -e %s)." % (num_events, event_name))
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else:
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record_arg_str += "-f %d " % args.sample_frequency
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log_info("Using frequency sampling (-f %d)." % args.sample_frequency)
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record_arg_str += "--duration %d " % args.capture_duration
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app_profiler_args += ["-r", record_arg_str]
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returncode = subprocess.call(app_profiler_args)
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return returncode == 0
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def parse_samples(process, args, sample_filter_fn):
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"""Read samples from record file.
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process: Process object
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args: arguments
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sample_filter_fn: if not None, is used to modify and filter samples.
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It returns false for samples should be filtered out.
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"""
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record_file = args.record_file
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symfs_dir = args.symfs
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kallsyms_file = args.kallsyms
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lib = ReportLib()
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lib.ShowIpForUnknownSymbol()
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if symfs_dir:
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lib.SetSymfs(symfs_dir)
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if record_file:
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lib.SetRecordFile(record_file)
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if kallsyms_file:
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lib.SetKallsymsFile(kallsyms_file)
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if args.show_art_frames:
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lib.ShowArtFrames(True)
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process.cmd = lib.GetRecordCmd()
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product_props = lib.MetaInfo().get("product_props")
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if product_props:
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tuple = product_props.split(':')
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process.props['ro.product.manufacturer'] = tuple[0]
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process.props['ro.product.model'] = tuple[1]
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process.props['ro.product.name'] = tuple[2]
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if lib.MetaInfo().get('trace_offcpu') == 'true':
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process.props['trace_offcpu'] = True
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if args.one_flamegraph:
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log_exit("It doesn't make sense to report with --one-flamegraph for perf.data " +
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"recorded with --trace-offcpu.""")
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else:
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process.props['trace_offcpu'] = False
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while True:
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sample = lib.GetNextSample()
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if sample is None:
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lib.Close()
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break
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symbol = lib.GetSymbolOfCurrentSample()
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callchain = lib.GetCallChainOfCurrentSample()
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if sample_filter_fn and not sample_filter_fn(sample, symbol, callchain):
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continue
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process.add_sample(sample, symbol, callchain)
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if process.pid == 0:
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main_threads = [thread for thread in process.threads.values() if thread.tid == thread.pid]
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if main_threads:
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process.name = main_threads[0].name
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process.pid = main_threads[0].pid
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for thread in process.threads.values():
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min_event_count = thread.num_events * args.min_callchain_percentage * 0.01
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thread.flamegraph.trim_callchain(min_event_count)
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log_info("Parsed %s callchains." % process.num_samples)
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def get_local_asset_content(local_path):
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"""
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Retrieves local package text content
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:param local_path: str, filename of local asset
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:return: str, the content of local_path
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"""
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with open(os.path.join(os.path.dirname(__file__), local_path), 'r') as f:
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return f.read()
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def output_report(process, args):
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"""
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Generates a HTML report representing the result of simpleperf sampling as flamegraph
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:param process: Process object
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:return: str, absolute path to the file
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"""
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f = open(args.report_path, 'w')
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filepath = os.path.realpath(f.name)
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if not args.embedded_flamegraph:
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f.write("<html><body>")
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f.write("<div id='flamegraph_id' style='font-family: Monospace; %s'>" % (
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"display: none;" if args.embedded_flamegraph else ""))
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f.write("""<style type="text/css"> .s { stroke:black; stroke-width:0.5; cursor:pointer;}
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</style>""")
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f.write('<style type="text/css"> .t:hover { cursor:pointer; } </style>')
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f.write('<img height="180" alt = "Embedded Image" src ="data')
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f.write(get_local_asset_content("inferno.b64"))
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f.write('"/>')
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process_entry = ("Process : %s (%d)<br/>" % (process.name, process.pid)) if process.pid else ""
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if process.props['trace_offcpu']:
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event_entry = 'Total time: %s<br/>' % get_proper_scaled_time_string(process.num_events)
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else:
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event_entry = 'Event count: %s<br/>' % ("{:,}".format(process.num_events))
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# TODO: collect capture duration info from perf.data.
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duration_entry = ("Duration: %s seconds<br/>" % args.capture_duration
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) if args.capture_duration else ""
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f.write("""<div style='display:inline-block;'>
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<font size='8'>
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Inferno Flamegraph Report%s</font><br/><br/>
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%s
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Date : %s<br/>
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Threads : %d <br/>
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Samples : %d<br/>
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%s
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%s""" % (
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(': ' + args.title) if args.title else '',
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process_entry,
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datetime.datetime.now().strftime("%Y-%m-%d (%A) %H:%M:%S"),
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len(process.threads),
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process.num_samples,
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event_entry,
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duration_entry))
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if 'ro.product.model' in process.props:
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f.write(
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"Machine : %s (%s) by %s<br/>" %
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(process.props["ro.product.model"],
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process.props["ro.product.name"],
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process.props["ro.product.manufacturer"]))
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if process.cmd:
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f.write("Capture : %s<br/><br/>" % process.cmd)
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f.write("</div>")
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f.write("""<br/><br/>
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<div>Navigate with WASD, zoom in with SPACE, zoom out with BACKSPACE.</div>""")
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f.write("<script>%s</script>" % get_local_asset_content("script.js"))
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if not args.embedded_flamegraph:
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f.write("<script>document.addEventListener('DOMContentLoaded', flamegraphInit);</script>")
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# Sort threads by the event count in a thread.
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for thread in sorted(process.threads.values(), key=lambda x: x.num_events, reverse=True):
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f.write("<br/><br/><b>Thread %d (%s) (%d samples):</b><br/>\n\n\n\n" % (
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thread.tid, thread.name, thread.num_samples))
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renderSVG(process, thread.flamegraph, f, args.color)
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f.write("</div>")
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if not args.embedded_flamegraph:
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f.write("</body></html")
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f.close()
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return "file://" + filepath
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def generate_threads_offsets(process):
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for thread in process.threads.values():
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thread.flamegraph.generate_offset(0)
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def collect_machine_info(process):
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adb = AdbHelper()
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process.props = {}
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process.props['ro.product.model'] = adb.get_property('ro.product.model')
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process.props['ro.product.name'] = adb.get_property('ro.product.name')
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process.props['ro.product.manufacturer'] = adb.get_property('ro.product.manufacturer')
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def main():
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# Allow deep callchain with length >1000.
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sys.setrecursionlimit(1500)
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parser = argparse.ArgumentParser(description="""Report samples in perf.data. Default option
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is: "-np surfaceflinger -f 6000 -t 10".""")
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record_group = parser.add_argument_group('Record options')
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record_group.add_argument('-du', '--dwarf_unwinding', action='store_true', help="""Perform
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unwinding using dwarf instead of fp.""")
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record_group.add_argument('-e', '--events', default="", help="""Sample based on event
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occurences instead of frequency. Format expected is
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"event_counts event_name". e.g: "10000 cpu-cyles". A few examples
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of event_name: cpu-cycles, cache-references, cache-misses,
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branch-instructions, branch-misses""")
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record_group.add_argument('-f', '--sample_frequency', type=int, default=6000, help="""Sample
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frequency""")
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record_group.add_argument('--compile_java_code', action='store_true',
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help="""On Android N and Android O, we need to compile Java code
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into native instructions to profile Java code. Android O
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also needs wrap.sh in the apk to use the native
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instructions.""")
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record_group.add_argument('-np', '--native_program', default="surfaceflinger", help="""Profile
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a native program. The program should be running on the device.
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Like -np surfaceflinger.""")
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record_group.add_argument('-p', '--app', help="""Profile an Android app, given the package
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name. Like -p com.example.android.myapp.""")
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record_group.add_argument('--record_file', default='perf.data', help='Default is perf.data.')
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record_group.add_argument('-sc', '--skip_collection', action='store_true', help="""Skip data
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collection""")
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record_group.add_argument('-t', '--capture_duration', type=int, default=10, help="""Capture
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duration in seconds.""")
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report_group = parser.add_argument_group('Report options')
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report_group.add_argument('-c', '--color', default='hot', choices=['hot', 'dso', 'legacy'],
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help="""Color theme: hot=percentage of samples, dso=callsite DSO
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name, legacy=brendan style""")
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report_group.add_argument('--embedded_flamegraph', action='store_true', help="""Generate
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embedded flamegraph.""")
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report_group.add_argument('--kallsyms', help='Set the path to find kernel symbols.')
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report_group.add_argument('--min_callchain_percentage', default=0.01, type=float, help="""
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Set min percentage of callchains shown in the report.
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It is used to limit nodes shown in the flamegraph. For example,
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when set to 0.01, only callchains taking >= 0.01%% of the event
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count of the owner thread are collected in the report.""")
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report_group.add_argument('--no_browser', action='store_true', help="""Don't open report
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in browser.""")
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report_group.add_argument('-o', '--report_path', default='report.html', help="""Set report
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path.""")
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report_group.add_argument('--one-flamegraph', action='store_true', help="""Generate one
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flamegraph instead of one for each thread.""")
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report_group.add_argument('--symfs', help="""Set the path to find binaries with symbols and
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debug info.""")
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report_group.add_argument('--title', help='Show a title in the report.')
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report_group.add_argument('--show_art_frames', action='store_true',
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help='Show frames of internal methods in the ART Java interpreter.')
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debug_group = parser.add_argument_group('Debug options')
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debug_group.add_argument('--disable_adb_root', action='store_true', help="""Force adb to run
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in non root mode.""")
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args = parser.parse_args()
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process = Process("", 0)
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if not args.skip_collection:
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process.name = args.app or args.native_program
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log_info("Starting data collection stage for process '%s'." % process.name)
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if not collect_data(args):
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log_exit("Unable to collect data.")
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result, output = AdbHelper().run_and_return_output(['shell', 'pidof', process.name])
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if result:
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try:
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process.pid = int(output)
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except:
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process.pid = 0
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collect_machine_info(process)
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else:
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args.capture_duration = 0
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sample_filter_fn = None
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if args.one_flamegraph:
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def filter_fn(sample, symbol, callchain):
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sample.pid = sample.tid = process.pid
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return True
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sample_filter_fn = filter_fn
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if not args.title:
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args.title = ''
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args.title += '(One Flamegraph)'
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parse_samples(process, args, sample_filter_fn)
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generate_threads_offsets(process)
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report_path = output_report(process, args)
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if not args.no_browser:
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open_report_in_browser(report_path)
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log_info("Flamegraph generated at '%s'." % report_path)
|
||
|
|
|
||
|
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if __name__ == "__main__":
|
||
|
|
main()
|