dump
dumpsys命令是Android手机自带的调试工具，下面讲解dumpsys用法
Dumpsys用户系统诊断，它运行在设备上，并提供系统服务状态信息
命令格式： adb shell dumpsys [system serbices]
如果直接运行adb shell dumpsys，将会获得所有的系统服务信息，那是非常多的，为了更容易管理输出，可以指定你想要检查的服务，例如：
adb shell dumpsys –l
adb shell serverce list
#都是查看有哪些系统服务（需要哪些服务就指定哪些服务）
命令行参数：
不同的服务有不同的选项，一下两个是常见的参数：
-h：对于大多数的服务，可以添加-h看到文本的帮助
-c：对于一些服务，可以添加-c查看数据会更友好
例如：
adb shell dumpsys meminfo –h
子命令格式：
adb shell dumpsys package [-h] [-f] [—checkin] [cmd]…
参数 | 说明 |
| -h | 打印帮助信息 |
| -f | 打印intent filter的信息 |
| --checkin | 打印出已经登记的库、系统功能、安装包 |
| cmd | 子命令（可以在-h帮助文档中查看有哪些子命令） |
cmd子命令 | 说明 |
| prov[iders] | 获取content providers |
| p[ackages] | 获取安装包基本信息 |
| s[hared-user] | 获取共享用户ID的应用 |
| m[essages] | 打印运行时收集的信息 |
| v[erifiers] | 打印包校验信息 |
| version | 打印数据库版本信息 |
| write | 写当前位置 |
| <package.name> | 输出给定包的信息 |
| installs | 安装会话的详细信息 |
| l[ibraries] | 列出已知的共享库 |
| f[ibraries] | 列出手机的功能 |
| k[eysets] | 列出各个包的Signing KeySets |
| r[esolvers] | 获取intent filter |
| perm[issions] | 获取权限 |
| pref[erred] | 打印包首选项 |
| preferred-xml [—full] | 打印包首选项，xml格式打印 |
子命令格式：
adb shell dumpsys activity [-a] [-c]…
参数 | 说明 |
| -a | 包括所有可用的服务器状态 |
| -c | 包括客户端状态 |
| -p | 限制输出为给定的包，例如： adb shell dumpsys activity -p com.android.browser |
| -h | 打印帮助信息 |
| cmd | 子命令 |
cmd子命令 | 说明 |
| a[ctivities] | activity堆栈状态 |
| r[recents] | 最近activity的状态 |
| b[rodacasts] [package_name] [histpry [-s]] | 广播状态 |
| i[ntents] [package_name] | 挂起的intent状态 |
| p[rocesses] [package_name] | 进程状态 |
| o[om] | oom管理 |
| perm[issions] | url权限授权状态 |
| prov[iders] [comp_spec…] | content provider状态 |
| provider [comp_spec] | provider客户端状态 |
| s[ervices] [comp_spec…] | 服务状态 |
| as[sociations] | 跟踪应用程序的关联 |
| service [comp_spec] | 服务客户端状态 |
| package [package_name] | 给的包的所有状态 |
| all | 转储所有的activityes |
| top | 转储栈顶的activity |
| write | 写入所有挂起状态存储 |
| track-associations | 允许会话跟踪 |
| untrack-associations | 禁用和明确会话跟踪，命令参数可能也是一个comp_spec 转储的activity |
子命令 | 说明 | 命令格式 |
| connectivity | 网络连接 | adb shell dumpsys connectivity |
| netpolicy | 网络策略 | adb shell dumpsys netpolicy |
| netstats | 网络状态 | adb shell dumpsys netstats |
| network_management | 网络管理 | adb shell dumpsys network_management |
| 子命令 | 说明 | 命令格式 |
| meminfo | 内存 | adn shell dumpsys meminfo |
| cpuinfo | CPU | adn shell dumpsys cpuinfo |
| gfxinfo | 帧率 | adn shell dumpsys gfxinfo |
| display | 显示 | adn shell dumpsys display |
| power | 电源 | adn shell dumpsys power |
| BATterystats | 电池状态 | adn shell dumpsys batterystats |
| battery | 电池 | adn shell dumpsys battery |
| alarm | 闹钟 | adn shell dumpsys alarm |
| location | 位置 | adn shell dumpsys location |
一. dumpsys
adb shell //进入手机shell
dumpsys | grep "DUMP OF SERVICE" //列举当前手机所有支持的dumpsys命令- 1
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运行上面指令，结果（不同手机结果会有所差异）
DUMP OF SERVICE APPIconThemeServices:
DUMP OF SERVICE AtCmdFwd:
DUMP OF SERVICE DockObserver:
DUMP OF SERVICE surfaceflinger:
DUMP OF SERVICE accessibility:
DUMP OF SERVICE account:
DUMP OF SERVICE activity:
DUMP OF SERVICE alarm:
DUMP OF SERVICE android.security.keystore:
DUMP OF SERVICE appops:
DUMP OF SERVICE appwidget:
DUMP OF SERVICE assetatlas:
DUMP OF SERVICE audio:
DUMP OF SERVICE backup:
DUMP OF SERVICE battery:
DUMP OF SERVICE batteryproperties:
DUMP OF SERVICE batterystats:
DUMP OF SERVICE bluetooth_manager:
DUMP OF SERVICE clipboard:
DUMP OF SERVICE com.broadcom.nfc.Factory:
DUMP OF SERVICE com.qualcomm.qti.auth.fidocryptodaemon:
DUMP OF SERVICE commontime_management:
DUMP OF SERVICE connectivity:
DUMP OF SERVICE consumer_ir:
DUMP OF SERVICE content:
DUMP OF SERVICE country_detector:
DUMP OF SERVICE cpuinfo:
DUMP OF SERVICE dbinfo:
DUMP OF SERVICE device_policy:
DUMP OF SERVICE devicestoragemonitor:
DUMP OF SERVICE diskstats:
DUMP OF SERVICE display:
DUMP OF SERVICE display.qservice:
DUMP OF SERVICE dreams:
DUMP OF SERVICE drm.drmManager:
DUMP OF SERVICE dropbox:
DUMP OF SERVICE entropy:
DUMP OF SERVICE fingerprint:
DUMP OF SERVICE fm_fingerprint_service:
DUMP OF SERVICE gfxinfo:
DUMP OF SERVICE hardware:
DUMP OF SERVICE imms:
DUMP OF SERVICE ims:
DUMP OF SERVICE input:
DUMP OF SERVICE input_method:
DUMP OF SERVICE iPhonesubinfo:
DUMP OF SERVICE isms:
DUMP OF SERVICE isub:
DUMP OF SERVICE jobscheduler:
DUMP OF SERVICE karaoke:
DUMP OF SERVICE launcherapps:
DUMP OF SERVICE lenovopermission:
DUMP OF SERVICE location:
DUMP OF SERVICE lock_settings:
DUMP OF SERVICE media.audio_flinger:
DUMP OF SERVICE media.audio_policy:
DUMP OF SERVICE media.camera:
DUMP OF SERVICE media.player:
DUMP OF SERVICE media.sound_trigger_hw:
DUMP OF SERVICE media_projection:
DUMP OF SERVICE media_router:
DUMP OF SERVICE media_session:
DUMP OF SERVICE meminfo:
DUMP OF SERVICE mount:
DUMP OF SERVICE netpolicy:
DUMP OF SERVICE netstats:
DUMP OF SERVICE network_management:
DUMP OF SERVICE network_score:
DUMP OF SERVICE nfc:
DUMP OF SERVICE notification:
DUMP OF SERVICE package:
rUMP OF SERVICE permission:
DUMP OF SERVICE phone:
DUMP OF SERVICE power:
DUMP OF SERVICE print:
DUMP OF SERVICE procstats:
DUMP OF SERVICE qti.ims.connectionmanagerservice:
DUMP OF SERVICE restrictions:
DUMP OF SERVICE rttmanager:
DUMP OF SERVICE samplingprofiler:
DUMP OF SERVICE scheduling_policy:
DUMP OF SERVICE search:
DUMP OF SERVICE sensorservice:
DUMP OF SERVICE serial:
DUMP OF SERVICE servicediscovery:
DUMP OF SERVICE simphonebook:
DUMP OF SERVICE sip:
DUMP OF SERVICE start_shutdown:
DUMP OF SERVICE statUSBar:
DUMP OF SERVICE telecom:
DUMP OF SERVICE telephony.registry:
DUMP OF SERVICE textservices:
DUMP OF SERVICE trust:
DUMP OF SERVICE uimode:
DUMP OF SERVICE updatelock:
DUMP OF SERVICE usagestats:
DUMP OF SERVICE usb:
DUMP OF SERVICE user:
DUMP OF SERVICE vendor.qcom.PeripheralManager:
DUMP OF SERVICE vibrator:
DUMP OF SERVICE voiceinteraction:
DUMP OF SERVICE wallpaper:
DUMP OF SERVICE wbc_service:
DUMP OF SERVICE webviewupdate:
DUMP OF SERVICE wfdservice:
DUMP OF SERVICE WiFi:
DUMP OF SERVICE wifip2p:
DUMP OF SERVICE wifiscanner:
DUMP OF SERVICE window:- 1
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二. dumpsys用法
（1）前面输入每一行都是都可以组成一条dumpsys指令。例如：DUMP OF SERVICE meminfo
dumpsys meminfo //输出当前所有memory相关的信息- 1
（2）当我们想查看具体某个应用的内存使用情况，例如QQ：
dumpsys meminfo com.tencent.mobileqq- 1
运行结果：
Applications Memory Usage (kB):
Uptime: 7382804 Realtime: 7382804
** MEMINFO in pid 22590 [com.tencent.mobileqq] **
Pss Private Private Swapped Heap Heap Heap
Total Dirty Clean Dirty Size Alloc Free
------ ------ ------ ------ ------ ------ ------
Native Heap 8701 8416 0 0 16384 10626 5757
Dalvik Heap 10247 6548 0 0 37655 22685 14970
Dalvik Other 633 632 0 0
Stack 820 820 0 0
Gfx dev 68 68 0 0
Other dev 25 0 24 0
.so mmap 5365 164 3236 0
.apk mmap 564 0 360 0
.ttf mmap 378 0 60 0
.dex mmap 5690 0 4368 0
.oat mmap 2711 0 272 0
.art mmap 2825 1596 12 0
Other mmap 52 4 0 0
Unknown 151 140 0 0
TOTAL 38230 18388 8332 0 54039 33311 20727
Objects
Views: 8 ViewRootImpl: 1
Appcontexts: 3 Activities: 1
assets: 3 AssetManagers: 3
local Binders: 23 Proxy Binders: 23
Parcel memory: 9 Parcel count: 39
Death Recipients: 2 OpenSSL sockets: 0
sql
MEMORY_USED: 0
PAGEcache_OVERFLOW: 0 malloc_SIZE: 62- 1
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（3）帮助信息
dumpsys meminfo -h //此处以meminfo为例，其他指令也是类同- 1
运行结果
meminfo dump options: [-a] [-d] [-c] [--oom] [process]
-a: include all available information for each process.
-d: include dalvik details when dumping process details.
-c: dump in a compact machine-parseable representation.
--oom: only show processes organized by oom adj.
--local: only collect details locally, don't call process.
--package: interpret process arg as package, dumping all
processes that have loaded that package.
If [process] is specified it can be the name or
pid of a specific process to dump.- 1
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三. dumpsys常用指令
dumpsys指令很多， 下面列举一些常用的dumpsys指令的功能
dumpsys package <package_name> //查看指定包名的信息
dumpsys activity <package_name> //查看指定包名的activity信息
dumpsys alarm //查看Alarm信息
dumpsys audio //查看声音信息
dumpsys battery //查看电池信息
dumpsys cpuinfo //查看CPU信息
dumpsys meminfo <package_name>//查看指定包名的内存信息
dumpsys netstats//查看网络统计信息
dumpsys diskstats //查看空间free状态
dumpsys jobscheduler //查看任务计划
dumpsys power//查看功耗信息
dumpsys wifi//查看wifi信息