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原理
官网链接
下载heap_profile
producer_support.cc
本地编译
push heapprofd
工具使用
pb文件获取
打开*.pb文件
trace文件
提高系统CPU性能
拆解特定函数内存占用
环境配置
工具使用
修改heap_profile 脚本 原理
Android perfetto memory分析工具和ma…
目录
原理
官网链接
下载heap_profile
producer_support.cc
本地编译
push heapprofd
工具使用
pb文件获取
打开*.pb文件
trace文件
提高系统CPU性能
拆解特定函数内存占用
环境配置
工具使用
修改heap_profile 脚本 原理
Android perfetto memory分析工具和malloc_debug原理类似。
基于malloc/free函数族的 caller hook。调用栈运行时聚合并以每个调用栈为单位进行统计。输出内存信息申请次数累计大小支持native进程和Android runtime(APP进程)自适应jemalloc和scudo
malloc_debug原理可以参考以下链接
https://android.googlesource.com/platform/bionic//master/libc/malloc_debug/README.md
官网链接
https://perfetto.dev/
https://www.speedscope.app/ 下载heap_profile
工具在Android源码中的位置 external/perfetto/ producer_support.cc
需要修改Android源代码中这个文件external/perfetto/src/profiling/common/producer_support.cc
producer_support.cc /** Copyright (C) 2020 The Android Open Source Project** 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.*/
#include src/profiling/common/producer_support.h
#include perfetto/ext/base/file_utils.h
#include perfetto/ext/base/string_splitter.h
#include perfetto/tracing/core/data_source_config.h
#include perfetto/tracing/core/forward_decls.h
#include src/traced/probes/packages_list/packages_list_parser.h
#if PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID)
#include sys/system_properties.h
#endif
namespace perfetto {
namespace profiling {
bool CanProfile(const DataSourceConfig ds_config,uint64_t uid,const std::vectorstd::string installed_by) {
//Forcely enablereturn true;
// We restrict by !PERFETTO_BUILDFLAG(PERFETTO_ANDROID_BUILD) because a
// sideloaded heapprofd should not be restricted by this. Do note though that,
// at the moment, there isnt really a way to sideload a functioning heapprofd
// onto user builds.
#if !PERFETTO_BUILDFLAG(PERFETTO_ANDROID_BUILD) || \!PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID)base::ignore_result(ds_config);base::ignore_result(uid);base::ignore_result(installed_by);return true;
#elsechar buf[PROP_VALUE_MAX 1] {};int ret __system_property_get(ro.build.type, buf);PERFETTO_CHECK(ret 0);return CanProfileAndroid(ds_config, uid, installed_by, std::string(buf),/data/system/packages.list);
#endif
}
bool CanProfileAndroid(const DataSourceConfig ds_config,uint64_t uid,const std::vectorstd::string installed_by,const std::string build_type,const std::string packages_list_path) {// These are replicated constants from libcutils android_filesystem_config.hconstexpr auto kAidAppStart 10000; // AID_APP_STARTconstexpr auto kAidAppEnd 19999; // AID_APP_ENDconstexpr auto kAidUserOffset 100000; // AID_USER_OFFSETif (build_type ! user) {return true;}uint64_t uid_without_profile uid % kAidUserOffset;if (uid_without_profile kAidAppStart || kAidAppEnd uid_without_profile) {// TODO(fmayer): relax this.return false; // no native services on user.}std::string content;if (!base::ReadFile(packages_list_path, content)) {PERFETTO_ELOG(Failed to read %s., packages_list_path.c_str());return false;}for (base::StringSplitter ss(std::move(content), \n); ss.Next();) {Package pkg;if (!ReadPackagesListLine(ss.cur_token(), pkg)) {PERFETTO_ELOG(Failed to parse packages.list.);return false;}if (pkg.uid ! uid_without_profile)continue;if (!installed_by.empty()) {if (pkg.installed_by.empty()) {PERFETTO_ELOG(installed_by given in TraceConfig, but cannot parse installer from packages.list.);return false;}if (std::find(installed_by.cbegin(), installed_by.cend(),pkg.installed_by) installed_by.cend()) {return false;}}switch (ds_config.session_initiator()) {case DataSourceConfig::SESSION_INITIATOR_UNSPECIFIED:return pkg.profileable_from_shell || pkg.debuggable;case DataSourceConfig::SESSION_INITIATOR_TRUSTED_SYSTEM:return pkg.profileable || pkg.debuggable;}}// Did not find package.return false;
}
} // namespace profiling
} // namespace perfetto本地编译
export BUILD_TARGET_ISproductsource build/envsetup.shlunch miproduct_zeus_cn-userdebugmake heapprofd -j5make完之后会在out/target/product/missi/system/bin目录下生成heapprofd模块
push heapprofd
adb push heapprofd /system/bin
adb shell chmod 777 /system/bin/heapprofd 工具使用
关键点
python3 tools/heap_profile -n vendor.qti.camera.provider2.7-service_64 --all-heaps -i $sampling_interval -o heap_trace_$DATE
关于参数-i ,默认4KB采样间隔如果设置比较大会出现申请小的trace不会体现如果设置比较小会出现严重的性能问题关键看需求。
ps : trace中参数含义 ---- From : Perfetto.Docs.Case Studies.Debugging Memory usage
The tabs that are available are
space: how many bytes were allocated but not freed at this callstack the moment the dump was created.alloc_space: how many bytes were allocated (including ones freed at the moment of the dump) at this callstackobjects: how many allocations without matching frees were sampled at this callstack.alloc_objects: how many allocations (including ones with matching frees) were sampled at this callstack. pb文件获取
pb文件有两种方式获取
获取方式一抓取trace后文件夹会生成.pb文件
获取方式二点击trace网页中的Download profile即可自动生成*.pb
打开*.pb文件
https://www.speedscope.app 将pb文件上传到网页中 trace文件
通过这个网站打开https://perfetto.dev/
可以显示每个函数的heap内存占用这里截个图如下所示 提高系统CPU性能
因为运行perfetto会导致一定的性能开销导致手机会比较卡顿下面命令可以提高CPU性能。
adb shell echo performance /sys/devices/system/cpu/cpufreq/policy0/scaling_governor
adb shell echo performance /sys/devices/system/cpu/cpufreq/policy4/scaling_governor
adb shell echo performance /sys/devices/system/cpu/cpufreq/policy6/scaling_governor
adb shell echo performance /sys/devices/system/cpu/cpufreq/policy7/scaling_governor
手动dump当前heap内存命令
adb shell killall -USR1 heapprofd
trace右上角dump的pd文件解析网站
https://www.speedscope.app 拆解特定函数内存占用
环境配置
adb push perfetto /system/bin
adb shell chmod 777 /system/bin/perfetto
adb push heapprofd /system/bin
adb shell chmod 777 /system/bin/heapprofd
工具使用
-f 参数后面设置过滤的函数名若有多个函数用分隔
修改heap_profile 脚本
heap_profile
#!/usr/bin/env python3# Copyright (C) 2017 The Android Open Source Project
#
# 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 __future__ import absolute_import
from __future__ import division
from __future__ import print_functionimport argparse
import atexit
import hashlib
import os
import shutil
import signal
import subprocess
import sys
import tempfile
import time
import uuid
import platformTRACE_TO_TEXT_SHAS {linux: 7e3e10dfb324e31723efd63ac25037856e06eba0,mac: 21f0f42dd019b4f09addd404a114fbf2322ca8a4,
}
TRACE_TO_TEXT_PATH tempfile.gettempdir()
TRACE_TO_TEXT_BASE_URL (https://storage.googleapis.com/perfetto/)NULL open(os.devnull)
NOOUT {stdout: NULL,stderr: NULL,
}UUID str(uuid.uuid4())[-6:]def check_hash(file_name, sha_value):file_hash hashlib.sha1()with open(file_name, rb) as fd:while True:chunk fd.read(4096)if not chunk:breakfile_hash.update(chunk)return file_hash.hexdigest() sha_valuedef load_trace_to_text(os_name):sha_value TRACE_TO_TEXT_SHAS[os_name]file_name trace_to_text- os_name - sha_valuelocal_file os.path.join(TRACE_TO_TEXT_PATH, file_name)if os.path.exists(local_file):if not check_hash(local_file, sha_value):os.remove(local_file)else:return local_fileurl TRACE_TO_TEXT_BASE_URL file_namesubprocess.check_call([curl, -L, -#, -o, local_file, url])if not check_hash(local_file, sha_value):os.remove(local_file)raise ValueError(Invalid signature.)os.chmod(local_file, 0o755)return local_filePACKAGES_LIST_CFG data_sources {config {name: android.packages_list}
}
CFG_INDENT
CFG buffers {{size_kb: 63488
}}data_sources {{config {{name: android.heapprofdheapprofd_config {{shmem_size_bytes: {shmem_size}sampling_interval_bytes: {interval}
{target_cfg}}}}}
}}duration_ms: {duration}
write_into_file: true
flush_timeout_ms: 30000
flush_period_ms: 604800000
# flush_period_ms of 1 week to suppress trace_processor_shell warning.CONTINUOUS_DUMP continuous_dump_config {{dump_phase_ms: 0dump_interval_ms: {dump_interval}}}
PROFILE_LOCAL_PATH os.path.join(tempfile.gettempdir(), UUID)IS_INTERRUPTED Falsedef sigint_handler(sig, frame):global IS_INTERRUPTEDIS_INTERRUPTED Truedef print_no_profile_error():print(No profiles generated, filesys.stderr)print(If this is unexpected, check https://perfetto.dev/docs/data-sources/native-heap-profiler#troubleshooting.,filesys.stderr)def known_issues_url(number):return (https://perfetto.dev/docs/data-sources/native-heap-profiler#known-issues-android{}.format(number))KNOWN_ISSUES {10: known_issues_url(10),Q: known_issues_url(10),11: known_issues_url(11),R: known_issues_url(11),
}def maybe_known_issues():release_or_codename subprocess.check_output([adb, shell, getprop, ro.build.version.release_or_codename]).decode(utf-8).strip()return KNOWN_ISSUES.get(release_or_codename, None)SDK {R: 30,
}def release_or_newer(release):sdk int(subprocess.check_output([adb, shell, getprop, ro.system.build.version.sdk]).decode(utf-8).strip())if sdk SDK[release]:return Truecodename subprocess.check_output([adb, shell, getprop, ro.build.version.codename]).decode(utf-8).strip()return codename releasedef main(argv):parser argparse.ArgumentParser()parser.add_argument(-i,--interval,helpSampling interval. Default 4096 (4KiB),typeint,default4096)parser.add_argument(-d,--duration,helpDuration of profile (ms). 0 to run until interrupted. Default: until interrupted by user.,typeint,default0)# This flag is a no-op now. We never start heapprofd explicitly using system# properties.parser.add_argument(--no-start, helpDo not start heapprofd., actionstore_true)parser.add_argument(-p,--pid,helpComma-separated list of PIDs to profile.,metavarPIDS)parser.add_argument(-n,--name,helpComma-separated list of process names to profile.,metavarNAMES)parser.add_argument(-f,--functions,helpComma-separated list of functions names to profile.,metavarFUNCTIONS)parser.add_argument(-c,--continuous-dump,helpDump interval in ms. 0 to disable continuous dump.,typeint,default0)parser.add_argument(--heaps,helpComma-separated list of heaps to collect, e.g: malloc,art. Requires Android 12.,metavarHEAPS)parser.add_argument(--all-heaps,actionstore_true,helpCollect allocations from all heaps registered by target.)parser.add_argument(--no-android-tree-symbolization,actionstore_true,helpDo not symbolize using currently lunched target in the Android tree.)parser.add_argument(--disable-selinux,actionstore_true,helpDisable SELinux enforcement for duration of profile.)parser.add_argument(--no-versions,actionstore_true,helpDo not get version information about APKs.)parser.add_argument(--no-running,actionstore_true,helpDo not target already running processes. Requires Android 11.)parser.add_argument(--no-startup,actionstore_true,helpDo not target processes that start during the profile. Requires Android 11.)parser.add_argument(--shmem-size,helpSize of buffer between client and heapprofd. Default 8MiB. Needs to be a power of two multiple of 4096, at least 8192.,typeint,default8 * 1048576)parser.add_argument(--block-client,helpWhen buffer is full, block the client to wait for buffer space. Use with caution as this can significantly slow down the client. This is the default,actionstore_true)parser.add_argument(--block-client-timeout,helpIf --block-client is given, do not block any allocation for longer than this timeout (us).,typeint)parser.add_argument(--no-block-client,helpWhen buffer is full, stop the profile early.,actionstore_true)parser.add_argument(--idle-allocations,helpKeep track of how many bytes were unused since the last dump, per callstack,actionstore_true)parser.add_argument(--dump-at-max,helpDump the maximum memory usage rather than at the time of the dump.,actionstore_true)parser.add_argument(--disable-fork-teardown,helpDo not tear down client in forks. This can be useful for programs that use vfork. Android 11 only.,actionstore_true)parser.add_argument(--simpleperf,actionstore_true,helpGet simpleperf profile of heapprofd. This is only for heapprofd development.)parser.add_argument(--trace-to-text-binary,helpPath to local trace to text. For debugging.)parser.add_argument(--print-config,actionstore_true,helpPrint config instead of running. For debugging.)parser.add_argument(-o,--output,helpOutput directory.,metavarDIRECTORY,defaultNone)args parser.parse_args()fail Falseif args.block_client and args.no_block_client:print(FATAL: Both block-client and no-block-client given., filesys.stderr)fail Trueif args.pid is None and args.name is None:print(FATAL: Neither PID nor NAME given., filesys.stderr)fail Trueif args.duration is None:print(FATAL: No duration given., filesys.stderr)fail Trueif args.interval is None:print(FATAL: No interval given., filesys.stderr)fail Trueif args.shmem_size % 4096:print(FATAL: shmem-size is not a multiple of 4096., filesys.stderr)fail Trueif args.shmem_size 8192:print(FATAL: shmem-size is less than 8192., filesys.stderr)fail Trueif args.shmem_size (args.shmem_size - 1):print(FATAL: shmem-size is not a power of two., filesys.stderr)fail Truetarget_cfg if not args.no_block_client:target_cfg CFG_INDENT block_client: true\nif args.block_client_timeout:target_cfg (CFG_INDENT block_client_timeout_us: %s\n % args.block_client_timeout)if args.no_startup:target_cfg CFG_INDENT no_startup: true\nif args.no_running:target_cfg CFG_INDENT no_running: true\nif args.dump_at_max:target_cfg CFG_INDENT dump_at_max: true\nif args.disable_fork_teardown:target_cfg CFG_INDENT disable_fork_teardown: true\nif args.all_heaps:target_cfg CFG_INDENT all_heaps: true\nif args.pid:for pid in args.pid.split(,):try:pid int(pid)except ValueError:print(FATAL: invalid PID %s % pid, filesys.stderr)fail Truetarget_cfg CFG_INDENT pid: {}\n.format(pid)if args.name:for name in args.name.split(,):target_cfg CFG_INDENT process_cmdline: {}\n.format(name)if args.heaps:for heap in args.heaps.split(,):target_cfg CFG_INDENT heaps: {}\n.format(heap)if args.functions:for functions in args.functions.split(,):target_cfg CFG_INDENT function_names: {}\n.format(functions)if fail:parser.print_help()return 1trace_to_text_binary args.trace_to_text_binaryif args.continuous_dump:target_cfg CONTINUOUS_DUMP.format(dump_intervalargs.continuous_dump)cfg CFG.format(intervalargs.interval,durationargs.duration,target_cfgtarget_cfg,shmem_sizeargs.shmem_size)if not args.no_versions:cfg PACKAGES_LIST_CFGif args.print_config:print(cfg)return 0# Do this AFTER print_config so we do not download trace_to_text only to# print out the config.has_trace_to_text Trueif trace_to_text_binary is None:os_name Noneif sys.platform.startswith(linux):os_name linuxelif sys.platform.startswith(darwin):os_name macelif sys.platform.startswith(win32):has_trace_to_text Falseelse:print(Invalid platform: {}.format(sys.platform), filesys.stderr)return 1arch platform.machine()if arch not in [x86_64, amd64]:has_trace_to_text Falseif has_trace_to_text:trace_to_text_binary load_trace_to_text(os_name)known_issues maybe_known_issues()if known_issues:print(If you are experiencing problems, please see the known issues for your release: {}..format(known_issues))# TODO(fmayer): Maybe feature detect whether we can remove traces instead of# this.uuid_trace release_or_newer(R)if uuid_trace:profile_device_path /data/misc/perfetto-traces/profile- UUIDelse:user subprocess.check_output([adb, shell, whoami]).decode(utf-8).strip()profile_device_path /data/misc/perfetto-traces/profile- userperfetto_cmd (CFG\{cfg}\; echo ${{CFG}} | perfetto --txt -c - -o profile_device_path -d)if args.disable_selinux:enforcing subprocess.check_output([adb, shell, getenforce])atexit.register(subprocess.check_call,[adb, shell, su root setenforce %s % enforcing])subprocess.check_call([adb, shell, su root setenforce 0])if args.simpleperf:subprocess.check_call([adb, shell, mkdir -p /data/local/tmp/heapprofd_profile cd /data/local/tmp/heapprofd_profile (nohup simpleperf record -g -p $(pidof heapprofd) 21 ) /dev/null])profile_target PROFILE_LOCAL_PATHif args.output is not None:profile_target args.outputelse:os.mkdir(profile_target)if not os.path.isdir(profile_target):print(Output directory {} not found.format(profile_target),filesys.stderr)return 1if os.listdir(profile_target):print(Output directory {} not empty.format(profile_target),filesys.stderr)return 1perfetto_pid subprocess.check_output([adb, exec-out,perfetto_cmd.format(cfgcfg)]).strip()try:perfetto_pid int(perfetto_pid.strip())except ValueError:print(Failed to invoke perfetto: {}.format(perfetto_pid), filesys.stderr)return 1old_handler signal.signal(signal.SIGINT, sigint_handler)print(Profiling active. Press CtrlC to terminate.)print(You may disconnect your device.)print()exists Truedevice_connected Truewhile not device_connected or (exists and not IS_INTERRUPTED):exists subprocess.call([adb, shell, [ -d /proc/{} ].format(perfetto_pid)], **NOOUT) 0device_connected subprocess.call([adb, shell, true], **NOOUT) 0time.sleep(1)print(Waiting for profiler shutdown...)signal.signal(signal.SIGINT, old_handler)if IS_INTERRUPTED:# Not check_call because it could have existed in the meantime.subprocess.call([adb, shell, kill, -INT, str(perfetto_pid)])if args.simpleperf:subprocess.check_call([adb, shell, killall, -INT, simpleperf])print(Waiting for simpleperf to exit.)while subprocess.call([adb, shell, [ -f /proc/$(pidof simpleperf)/exe ]], **NOOUT) 0:time.sleep(1)subprocess.check_call([adb, pull, /data/local/tmp/heapprofd_profile, profile_target])print(Pulled simpleperf profile to profile_target /heapprofd_profile)# Wait for perfetto cmd to return.while exists:exists subprocess.call([adb, shell, [ -d /proc/{} ].format(perfetto_pid)]) 0time.sleep(1)profile_host_path os.path.join(profile_target, raw-trace)subprocess.check_call([adb, pull, profile_device_path, profile_host_path], stdoutNULL)if uuid_trace:subprocess.check_call([adb, shell, rm, profile_device_path], stdoutNULL)if not has_trace_to_text:print(Wrote profile to {}.format(profile_host_path))print(This file can be opened using the Perfetto UI, https://ui.perfetto.dev)return 0binary_path os.getenv(PERFETTO_BINARY_PATH)if not args.no_android_tree_symbolization:product_out os.getenv(ANDROID_PRODUCT_OUT)if product_out:product_out_symbols product_out /symbolselse:product_out_symbols Noneif binary_path is None:binary_path product_out_symbolselif product_out_symbols is not None:binary_path : product_out_symbolstrace_file os.path.join(profile_target, raw-trace)concat_files [trace_file]if binary_path is not None:with open(os.path.join(profile_target, symbols), w) as fd:ret subprocess.call([trace_to_text_binary, symbolize,os.path.join(profile_target, raw-trace)],envdict(os.environ, PERFETTO_BINARY_PATHbinary_path),stdoutfd)if ret 0:concat_files.append(os.path.join(profile_target, symbols))else:print(Failed to symbolize. Continuing without symbols.,filesys.stderr)proguard_map os.getenv(PERFETTO_PROGUARD_MAP)if proguard_map is not None:with open(os.path.join(profile_target, deobfuscation-packets), w) as fd:ret subprocess.call([trace_to_text_binary, deobfuscate,os.path.join(profile_target, raw-trace)],envdict(os.environ, PERFETTO_PROGUARD_MAPproguard_map),stdoutfd)if ret 0:concat_files.append(os.path.join(profile_target, deobfuscation-packets))else:print(Failed to deobfuscate. Continuing without deobfuscated.,filesys.stderr)if len(concat_files) 1:with open(os.path.join(profile_target, symbolized-trace), wb) as out:for fn in concat_files:with open(fn, rb) as inp:while True:buf inp.read(4096)if not buf:breakout.write(buf)trace_file os.path.join(profile_target, symbolized-trace)trace_to_text_output subprocess.check_output([trace_to_text_binary, profile, trace_file])profile_path Nonefor word in trace_to_text_output.decode(utf-8).split():if heap_profile- in word:profile_path wordif profile_path is None:print_no_profile_error()return 1profile_files os.listdir(profile_path)if not profile_files:print_no_profile_error()return 1for profile_file in profile_files:shutil.copy(os.path.join(profile_path, profile_file), profile_target)subprocess.check_call([gzip] [os.path.join(profile_target, x) for x in profile_files])symlink_path Noneif args.output is None:symlink_path os.path.join(os.path.dirname(profile_target), heap_profile-latest)if os.path.lexists(symlink_path):os.unlink(symlink_path)os.symlink(profile_target, symlink_path)if symlink_path is not None:print(Wrote profiles to {} (symlink {}).format(profile_target, symlink_path))else:print(Wrote profiles to {}.format(profile_target))print(These can be viewed using pprof. Googlers: head to pprof/ and upload them.)if __name__ __main__:sys.exit(main(sys.argv))运行脚本
#!/bin/bashpid_app$(adb shell ps | grep com.android.camera | awk {print $2})
pid_server$(adb shell ps | grep -Eia cameraserver$ | awk {print $2})
pid_provider$(adb shell ps | grep camera.provider | awk {print $2})pid_allocate$(adb shell ps | grep vendor.qti.hardware.display.allocator-service | awk {print $2})
pid_hidl$(adb shell ps | grep android.hidl.allocator1.0-service | awk {print $2})adb shell echo performance /sys/devices/system/cpu/cpufreq/policy0/scaling_governor
#adb shell echo performance /sys/devices/system/cpu/cpufreq/policy4/scaling_governor
#adb shell echo performance /sys/devices/system/cpu/cpufreq/policy6/scaling_governor
adb shell echo performance /sys/devices/system/cpu/cpufreq/policy7/scaling_governor
adb shell echo performance /sys/devices/system/cpu/cpufreq/policy3/scaling_governorDATE$(date %m_%d_%H_%M_%S)
sampling_interval6000mkdir heap_trace_$DATE
#python3 tools/heap_profile -n vendor.qti.camera.provider-service_64 -f process_capture_request --all-heaps -i $sampling_interval -o heap_trace_$DATE
python3 tools/heap_profile -n vendor.qti.camera.provider-service_64 -f configure_streams,process_capture_request --all-heaps -i $sampling_interval -o heap_trace_$DATE
#python3 tools/heap_profile -p $pid_provider -i 0 -o heap_trace_$DATE
#--trace-to-text-binary heap_trace_$DATE
gzip -d heap_trace_$DATE/*.gzecho Output directory is heap_trace_$DATE
