Item | 全称 | 含义 | 等价 |
---|---|---|---|
USS | Unique Set Size | 物理内存 | 进程独占的内存 |
PSS | Proportional Set Size | 物理内存 | PSS= USS+ 按比例包含共享库 |
RSS | Resident Set Size | 物理内存 | RSS= USS+ 包含共享库 |
VSS | Virtual Set Size | 虚拟内存 | VSS= RSS+ 未分配实际物理内存 |
内存的大小关系:VSS>=RSS>=PSS>=USS
获取所有进程的内存使用的排行榜,排行是以Pss的大小而排序,能输出详细的VSS/RSS/PSS/USS内存指标。
# procrank
PID Vss Rss Pss Uss cmdline
469 4715244K 199568K 93953K 76772K system_server
628 4774604K 184272K 79868K 63260K com.android.systemui
378 1581340K 116848K 63536K 35956K zygote
1054 5048780K 130504K 33086K 20376K com.android.launcher3
377 4239348K 130300K 28338K 8012K zygote64
687 1333924K 54604K 25609K 5504K /system/bin/webview_zygote32
749 4338336K 108900K 25539K 16612K com.android.phone
263 75200K 27620K 18690K 16088K /vendor/bin/hw/android.hardware.neuralnetworks@1.0-service-armnn
606 4330764K 91380K 15649K 9656K com.android.inputmethod.latin
269 312884K 27868K 13869K 10336K /system/bin/surfaceflinger
1170 4321764K 92900K 13701K 6336K android.process.media
1302 4323936K 84736K 13004K 8064K com.android.email
255 53284K 21308K 10199K 6972K /vendor/bin/hw/android.hardware.camera.provider@2.4-service
1140 4317440K 82832K 9876K 3808K android.rockchip.update.service
1850 4318536K 75692K 8379K 4096K com.android.calendar
1284 4315752K 77148K 8185K 3796K com.android.providers.calendar
387 73924K 18420K 7686K 5064K /system/bin/mediaserver
1190 4315400K 71948K 7137K 2800K com.android.quicksearchbox
1876 4315996K 74824K 6986K 2668K com.android.mtp
391 31860K 12104K 6845K 5644K media.codec
1021 4315960K 70452K 6835K 3020K com.android.printspooler
1011 4314012K 69076K 6658K 2864K com.cghs.stresstest
379 43520K 12616K 6621K 4920K /system/bin/audioserver
385 2164032K 18588K 6493K 4324K media.extractor
1407 4315816K 70584K 6403K 2296K android.ext.services
1114 4314788K 69144K 5972K 2240K com.android.keychain
1069 4313648K 67308K 5792K 2156K com.android.smspush
253 16256K 7892K 4116K 2808K /vendor/bin/hw/android.hardware.audio@2.0-service
380 24908K 11124K 3948K 2544K /system/bin/cameraserver
386 2128240K 11312K 3220K 2156K media.metrics
261 33120K 7556K 3022K 2432K /vendor/bin/hw/android.hardware.graphics.composer@2.1-service
232 19996K 5304K 2915K 2820K /system/bin/logd
381 18964K 9884K 2836K 1652K /system/bin/drmserver
266 14404K 6140K 2798K 2604K /vendor/bin/hw/android.hardware.wifi@1.0-service
258 12756K 6560K 2463K 1904K /vendor/bin/hw/android.hardware.drm@1.0-service
245 55064K 7468K 2421K 2024K /system/bin/vold
388 31004K 6548K 2225K 1980K /system/bin/netd
259 11140K 5328K 1985K 1588K /vendor/bin/hw/android.hardware.drm@1.0-service.widevine
383 19280K 6492K 1811K 1348K /system/bin/keystore
382 19676K 5636K 1809K 1616K /system/bin/installd
1 11968K 2436K 1714K 1092K /init
234 14408K 5576K 1653K 1352K /system/bin/hwservicemanager
1841 12932K 1700K 1511K 1504K /system/bin/adbd
390 15096K 5632K 1507K 1312K /system/bin/wificond
265 16888K 5044K 1439K 1164K /vendor/bin/hw/android.hardware.sensors@1.0-service
244 14848K 5904K 1422K 928K /vendor/bin/hw/android.hardware.keymaster@3.0-service
384 10688K 5308K 1297K 804K /system/bin/mediadrmserver
260 17480K 5224K 1261K 960K /vendor/bin/hw/android.hardware.graphics.allocator@2.0-service
393 15560K 5612K 1245K 1000K /system/bin/gatekeeperd
403 9468K 3296K 1244K 1188K /system/bin/ip6tables-restore
402 9452K 3200K 1165K 1116K /system/bin/iptables-restore
207 6080K 1768K 1158K 568K /sbin/ueventd
2038 16940K 3304K 1145K 1088K procrank
270 13924K 5000K 1142K 944K /system/bin/thermalserviced
389 15988K 4292K 1090K 960K /system/bin/storaged
254 12244K 4212K 1042K 868K /vendor/bin/hw/android.hardware.bluetooth@1.0-service
256 9048K 4108K 1018K 596K /vendor/bin/hw/android.hardware.cas@1.0-service
257 15372K 4372K 1017K 828K /vendor/bin/hw/android.hardware.configstore@1.0-service
267 13464K 4504K 993K 860K /system/bin/healthd
262 12136K 4168K 896K 676K /vendor/bin/hw/android.hardware.light@2.0-service
264 12140K 4168K 870K 668K /vendor/bin/hw/android.hardware.power@1.0-service
233 10444K 3428K 848K 760K /system/bin/servicemanager
235 10244K 3256K 805K 696K /vendor/bin/vndservicemanager
252 12088K 4088K 767K 636K /system/bin/hw/android.hidl.allocator@1.0-service
1983 8932K 3008K 736K 548K /system/bin/sh
274 8932K 2944K 727K 540K /system/bin/sh
268 9180K 3072K 681K 624K /system/bin/lmkd
395 9028K 3004K 662K 600K /system/bin/tombstoned
------ ------ ------
601566K 385996K TOTAL
RAM: 3938668K total, 27
65940K free, 54772K buffers, 683920K cached, 117060K shmem, 119748K slab
获取所有进程的内存使用的排行榜,排行是以Pss的大小而排序,能输出详细的VSS/RSS/PSS/USS内存指标。
查看可用内存,缺省单位KB。该命令比较简单、轻量,专注于查看剩余内存情况。数据来源于/proc/meminfo。
# free
total used free shared buffers
Mem: 4033196032 1199968256 2833227776 119869440 56078336
-/+ buffers/cache: 1143889920 2889306112
Swap: 2016256000 0 2016256000
# free -m
total used free shared buffers
Mem: 3846 1144 2701 114 53
-/+ buffers/cache: 1091 2755
Swap: 1922 0 1922
对于Mem行,存在的公式关系:total= used+free;对于-/+ buffers行: buffers/cache used=mem_used - mem_buffers
buffers/cache free = mem free + mem buffers
展示的是系统整体内存情况,内存项按类型进行分类:
# cat /proc/meminfo
MemTotal: 3938668 kB
MemFree: 2766932 kB
MemAvailable: 3366724 kB
Buffers: 54764 kB
Cached: 683932 kB
SwapCached: 0 kB
Active: 468604 kB
Inactive: 493776 kB
Active(anon): 226044 kB
Inactive(anon): 114680 kB
Active(file): 242560 kB
Inactive(file): 379096 kB
Unevictable: 256 kB
Mlocked: 256 kB
SwapTotal: 1969000 kB
SwapFree: 1969000 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 223980 kB
Mapped: 376328 kB
Shmem: 117060 kB
Slab: 119740 kB
SReclaimable: 80184 kB
SUnreclaim: 39556 kB
KernelStack: 11872 kB
PageTables: 15752 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3938332 kB
Committed_AS: 40624220 kB
VmallocTotal: 258867136 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
CmaTotal: 16384 kB
CmaFree: 13892 kB
日常使用经验总结:1)MemTotal:是除去系统底层预留内存之外,能被系统使用的总内存大小,正常情况下会比实际内存小一点,但是如果小太多的话属于预留不合理,需要看看原因,这属于先天不足,天花板过低。
2)MemFree、MemAvailable:前者是当前系统未被使用的内存,后者是当前系统可以被使用的内存(包括可以被回收的部分内存),意思就那个什么,挤挤还是有的。从经验上来说,如果当前MemAvailable底于总内存的1/10,那么系统可能会出现因为内存造成的卡顿,其中原因可能包括频繁回收内存造成的阻塞、耗时以及寻址难度加大变相地增加了内存分配的时间等等。
3)Buffers、Cached:前者用于缓存磁盘blocks以优化block I/O,后者用于缓存文件内容以优化文件1/O。部分内存是可被回收的,被算到MemAvailable中。MemAvailable ≈ MemFree+Buffers+Cached
4)Mlocked:被系统锁定的页面。比如系统中google 7.0加的PinnerService 就会有这个效果,把常用的内容锁定在内存中,避免频繁的内存回收与分配,优化但不限于提升io效率。典型的用空间换时间,如果是Android 2G及其以下内存的手机,建议关闭PinnerService,要啥自行车。PinnerService官方描述
5) SwapTotal, SwapFree:这就zram,如果为0就是没打开。SwapTotal是zram总空间大小, SwapFree是没交换的空间大小。
6)Slab:内核基于Buddy做了page的粗分,Slab基于Buddy做了内存二次划分,这部分就是基于SIab内存分配的内存大小。使用的函数是kmalloc/kfree。SReclaimable和SUnreclaim分别是Slab的可回收和不可回收部分(slab=SReclaimable+SUnreclaim),如果Slab比较大,可能是kernel debug开关被打开了(也不一定,具体看调试内容),而且 SUnreclaim也非常大的话,可能存在kernel泄漏。
7) Kernel内存可使用内存 Slab + KernelStack+PageTables。
dumpsys的源码结构其实很简单,只有一个dumpsys.cpp源码路径是: /frameworks/native/cmds/dumpsys/dumpsys.cpp在其main方法中,先通过defaultServiceManager(函数获得ServiceManager对象,然后根据dumpsys传进来的参数通过函数checkService来找到具体的service,并执行该service的dump方法,达到dump service的目的。
dumpsys meminfo对应的服务是:ActivityManagerService, 它从memBinder类的dump函数开始执行的。
static class MemBinder extends Binder {
ActivityManagerService mActivityManagerService;
private final PriorityDump.PriorityDumper mPriorityDumper =
new PriorityDump.PriorityDumper() {
@Override
public void dumpHigh(FileDescriptor fd, PrintWriter pw, String[] args,
boolean asProto) {
dump(fd, pw, new String[] {"-a"}, asProto);
}
@Override
public void dump(FileDescriptor fd, PrintWriter pw, String[] args, boolean asProto) {
mActivityManagerService.dumpApplicationMemoryUsage(
fd, pw, " ", args, false, null, asProto);
}
};
主要收集内存信息并打印是在dumpApplicationMemoryUsage方法中做的,但是该方法比较大,就不列出来了,举个例子:
Debug.getMemoryInfo(pid,mi);/通过debug.java中的getMemoryInfo函数来获取当前进程的整体memory信息,获取的是 对应的/proc/$/smaps文件统计出来的信息。getMemoryInfo是个native方法,对应到android_os_Debug.cpp的 android_os_Debug_getDirtyPagesPid.
从代码看:这部分内容是从/proc/$/smaps获取的。
那么总结下dumpsys meminfo的出处:
很明显,dumpsys meminfo 获取的数据是从系统各个渠道汇集来的。
# dumpsys meminfo
Applications Memory Usage (in Kilobytes):
Uptime: 18012360 Realtime: 92063532
Total PSS by process: //Java层存活的进程及其占用内存情况
93,509K: system (pid 469)
79,586K: com.android.systemui (pid 628)
63,474K: zygote (pid 378)
32,858K: com.android.launcher3 (pid 1054 / activities)
28,094K: zygote64 (pid 377)
25,557K: webview_zygote32 (pid 687)
25,377K: com.android.phone (pid 749)
18,679K: android.hardware.neuralnetworks@1.0-service-armnn (pid 263)
15,488K: com.android.inputmethod.latin (pid 606)
13,830K: surfaceflinger (pid 269)
13,543K: android.process.media (pid 1170)
12,843K: com.android.email (pid 1302)
10,147K: android.hardware.camera.provider@2.4-service (pid 255)
9,675K: android.rockchip.update.service (pid 1140)
8,219K: com.android.calendar (pid 1850)
8,027K: com.android.providers.calendar (pid 1284)
7,646K: mediaserver (pid 387)
6,977K: com.android.quicksearchbox (pid 1190)
6,827K: com.android.mtp (pid 1876)
6,820K: media.codec (pid 391)
6,675K: com.android.printspooler (pid 1021)
6,587K: audioserver (pid 379)
6,504K: com.cghs.stresstest (pid 1011)
6,449K: media.extractor (pid 385)
6,246K: android.ext.services (pid 1407)
5,812K: com.android.keychain (pid 1114)
5,633K: com.android.smspush (pid 1069)
4,095K: android.hardware.audio@2.0-service (pid 253)
3,916K: cameraserver (pid 380)
3,191K: media.metrics (pid 386)
2,998K: android.hardware.graphics.composer@2.1-service (pid 261)
2,910K: logd (pid 232)
2,803K: drmserver (pid 381)
2,789K: android.hardware.wifi@1.0-service (pid 266)
2,442K: android.hardware.drm@1.0-service (pid 258)
2,405K: vold (pid 245)
2,214K: netd (pid 388)
1,970K: android.hardware.drm@1.0-service.widevine (pid 259)
1,799K: keystore (pid 383)
1,798K: installd (pid 382)
1,707K: /init (pid 1)
1,642K: hwservicemanager (pid 234)
1,509K: adbd (pid 1841)
1,497K: wificond (pid 390)
1,430K: android.hardware.sensors@1.0-service (pid 265)
1,410K: android.hardware.keymaster@3.0-service (pid 244)
1,276K: mediadrmserver (pid 384)
1,243K: android.hardware.graphics.allocator@2.0-service (pid 260)
1,241K: ip6tables-restore (pid 403)
1,234K: gatekeeperd (pid 393)
1,163K: iptables-restore (pid 402)
1,158K: ueventd (pid 207)
1,133K: thermalserviced (pid 270)
1,082K: storaged (pid 389)
1,034K: android.hardware.bluetooth@1.0-service (pid 254)
1,009K: android.hardware.configstore@1.0-service (pid 257)
1,005K: android.hardware.cas@1.0-service (pid 256)
985K: healthd (pid 267)
888K: android.hardware.light@2.0-service (pid 262)
861K: android.hardware.power@1.0-service (pid 264)
839K: servicemanager (pid 233)
801K: vndservicemanager (pid 235)
770K: dumpsys (pid 2032)
759K: android.hidl.allocator@1.0-service (pid 252)
733K: sh (pid 1983)
724K: sh (pid 274)
676K: lmkd (pid 268)
658K: tombstoned (pid 395)
Total PSS by OOM adjustment: //Native存活的进程及其占用内存情况
253,080K: Native
63,474K: zygote (pid 378)
28,094K: zygote64 (pid 377)
25,557K: webview_zygote32 (pid 687)
18,679K: android.hardware.neuralnetworks@1.0-service-armnn (pid 263)
13,830K: surfaceflinger (pid 269)
10,147K: android.hardware.camera.provider@2.4-service (pid 255)
7,646K: mediaserver (pid 387)
6,820K: media.codec (pid 391)
6,587K: audioserver (pid 379)
6,449K: media.extractor (pid 385)
4,095K: android.hardware.audio@2.0-service (pid 253)
3,916K: cameraserver (pid 380)
3,191K: media.metrics (pid 386)
2,998K: android.hardware.graphics.composer@2.1-service (pid 261)
2,910K: logd (pid 232)
2,803K: drmserver (pid 381)
2,789K: android.hardware.wifi@1.0-service (pid 266)
2,442K: android.hardware.drm@1.0-service (pid 258)
2,405K: vold (pid 245)
2,214K: netd (pid 388)
1,970K: android.hardware.drm@1.0-service.widevine (pid 259)
1,799K: keystore (pid 383)
1,798K: installd (pid 382)
1,707K: /init (pid 1)
1,642K: hwservicemanager (pid 234)
1,509K: adbd (pid 1841)
1,497K: wificond (pid 390)
1,430K: android.hardware.sensors@1.0-service (pid 265)
1,410K: android.hardware.keymaster@3.0-service (pid 244)
1,276K: mediadrmserver (pid 384)
1,243K: android.hardware.graphics.allocator@2.0-service (pid 260)
1,241K: ip6tables-restore (pid 403)
1,234K: gatekeeperd (pid 393)
1,163K: iptables-restore (pid 402)
1,158K: ueventd (pid 207)
1,133K: thermalserviced (pid 270)
1,082K: storaged (pid 389)
1,034K: android.hardware.bluetooth@1.0-service (pid 254)
1,009K: android.hardware.configstore@1.0-service (pid 257)
1,005K: android.hardware.cas@1.0-service (pid 256)
985K: healthd (pid 267)
888K: android.hardware.light@2.0-service (pid 262)
861K: android.hardware.power@1.0-service (pid 264)
839K: servicemanager (pid 233)
801K: vndservicemanager (pid 235)
770K: dumpsys (pid 2032)
759K: android.hidl.allocator@1.0-service (pid 252)
733K: sh (pid 1983)
724K: sh (pid 274)
676K: lmkd (pid 268)
658K: tombstoned (pid 395)
93,509K: System
93,509K: system (pid 469)
111,467K: Persistent
79,586K: com.android.systemui (pid 628)
25,377K: com.android.phone (pid 749)
6,504K: com.cghs.stresstest (pid 1011)
32,858K: Foreground
32,858K: com.android.launcher3 (pid 1054 / activities)
5,633K: Visible
5,633K: com.android.smspush (pid 1069)
15,488K: Perceptible
15,488K: com.android.inputmethod.latin (pid 606)
9,675K: B Services
9,675K: android.rockchip.update.service (pid 1140)
75,169K: Cached
13,543K: android.process.media (pid 1170)
12,843K: com.android.email (pid 1302)
8,219K: com.android.calendar (pid 1850)
8,027K: com.android.providers.calendar (pid 1284)
6,977K: com.android.quicksearchbox (pid 1190)
6,827K: com.android.mtp (pid 1876)
6,675K: com.android.printspooler (pid 1021)
6,246K: android.ext.services (pid 1407)
5,812K: com.android.keychain (pid 1114)
Total PSS by category: 按类型进行分类
157,906K: .so mmap
109,632K: Native
106,914K: .dex mmap
56,243K: .oat mmap
44,939K: .apk mmap
32,029K: .art mmap
24,460K: Unknown
23,246K: Dalvik
18,957K: Other mmap
11,423K: .ttf mmap
7,471K: Dalvik Other
2,288K: Stack
879K: Other dev
320K: Ashmem
172K: .jar mmap
0K: Cursor
0K: Gfx dev
0K: EGL mtrack
0K: GL mtrack
0K: Other mtrack
Total RAM: 3,938,668K (status normal)
Free RAM: 3,283,817K ( 75,169K cached pss + 442,724K cached kernel + 2,765,924K free)
Used RAM: 750,258K ( 521,710K used pss + 228,548K kernel)
Lost RAM: -95,419K
ZRAM: 12K physical used for 0K in swap (1,969,000K total swap)
Tuning: 192 (large 512), oom 322,560K, restore limit 107,520K (high-end-gfx)
先总结下最下面的统计:Total RAM:内存总数,与proc/meminfo中的MemTotal一致。Free RAM: cached pss + cached kernel + cached ion + free手机剩余内存一般是看它
Used RAM: used pss+kernel+trace buffer+ion display+cma usage
Lost RAM:与cache ion有关
ZRAM:zram swap转换情况
Tuning:这一行主要是system的一些设置,没看过
查看单个进程内存详情
** MEMINFO in pid 9953 [com.google.android.gm] **
Pss Pss Shared Private Shared Private Heap Heap Heap
Total Clean Dirty Dirty Clean Clean Size Alloc Free
------ ------ ------ ------ ------ ------ ------ ------ ------
Native Heap 0 0 0 0 0 0 7800 7637(6) 126
Dalvik Heap 5110(3) 0 4136 4988(3) 0 0 9168 8958(6) 210
Dalvik Other 2850 0 2684 2772 0 0
Stack 36 0 8 36 0 0
Cursor 136 0 0 136 0 0
Ashmem 12 0 28 0 0 0
Other dev 380 0 24 376 0 4
.so mmap 5443(5) 1996 2584 2664(5) 5788 1996(5)
.apk mmap 235 32 0 0 1252 32
.ttf mmap 36 12 0 0 88 12
.dex mmap 3019(5) 2148 0 0 8936 2148(5)
Other mmap 107 0 8 8 324 68
Unknown 6994(4) 0 252 6992(4) 0 0
TOTAL 24358(1) 4188 9724 17972(2)16388 4260(2)16968 16595 336
Objects
Views: 426 ViewRootImpl: 3(8)
AppContexts: 6(7) Activities: 2(7)
Assets: 2 AssetManagers: 2
Local Binders: 64 Proxy Binders: 34
Death Recipients: 0
OpenSSL Sockets: 1
SQL
MEMORY_USED: 1739
PAGECACHE_OVERFLOW: 1164 MALLOC_SIZE: 62
数据来源:
纵轴:
属性名 | 说明 |
---|---|
Native Heap | 在Native Code 中使用 malloc 分配出的内存 |
Dalvik Heap | Dalvik 虚拟机分配的空间,不包括它自身的开销。Dalvik 堆中和 Zygote 进程共享的部分算是 sharedDirty |
Dalvik Other | 类数据结构和索引占据的内存 |
Stack | 栈内存 |
Cursor | CursorWindow 占用的空间,与 SQL 有关 |
Ashmem | 匿名共享内存,此类内存与cache shrinker 关联,可以控制cache shrinker在适当时机回收这些共享内存 |
Gfx dev | /dev/kgsl-3d0 占用的内存 |
Other dev | 内部driver占用的内存 |
.so mmap | 映射的 .so(native)代码占用的内存 |
.jar mmap | Java 文件代码占用内存 |
.apk mmap | apk 代码占用内存 |
.ttf mmap | ttf 文件代码占用内存 |
.dex mmap | 映射的 .dex(Dalvik 或 ART)代码占用的内存 |
.oat mmap | 代码映像占用的 RAM 量。此映像在所有应用之间共享,不受特定应用影响 |
.art mmap | 堆映像占用的 RAM 量。此映像在所有应用之间共享,不受特定应用影响。尽管 ART 映像包含 Object 实例,它仍然不会计入您的堆大小 |
Other mmap | 其它文件占用的内存 |
横轴:
属性名 | 说明 |
---|---|
Pss Total | 实际使用的内存,这里考虑了与Zygote 的共享。任何独占的内存页直接计算它的PSS值,而和其它进程共享的页则按照共享的比例计算PSS值 |
Private Dirty | 进程私有的,相对磁盘数据有改动的内存 |
Private Clean | 进程私有的,相对磁盘数据没有修改的内存 |
SwapPss Dirty | Android 4.4的一个优化,swap to zRAM。牺牲CPU,减少内存。这两个值的区别在于内核是否是统计按比例分出的swap数据,是的输出为SwapPss Dirty。 |
Swap Dirty | Whether the kernel reports proportional swap usage |
Heap相关:
Heap Size | Heap Alloc | Heap Free | |
---|---|---|---|
Native Heap | 从mallinfo usmblks获得,代表最 大总共分配空间 | 从mallinfo uorblks获得,总共已分配 空间 | 从mallinfo fordblks获得,代表总 共剩余空间 |
Dalvik Heap | 从Runtime totalMemory()获得, Dalvik Heap总共的内存大小 | Runtime totalMemory()-freeMemory() , Dalvik Heap分配的内存大小 | 从Runtime freeMemory()获得, Dalvik Heap剩余的内存大小 |
App Summary:
属性名 | 内存组成 |
---|---|
Java Heap | Dalvik Heap 的 Private Dirty.art mmap 的 Private Dirty |
Native Heap | Native Heap 的 Private Dirty |
Code | .so mmap.jar mmap.apk mmap.ttf mmap.dex mmap.oat mmap的 Private Dirty + Private Clean |
Stack | Stack 的 Private Dirty |
Graphics | Gfx devEGL mtrackGL mtrack的 Private Dirty + Private Clean |
Private Other | Native HeapDalvik Heap- HEAP_UNKNOWN的Private Dirty + Private Clean |
System | Native HeapDalvik HeapHEAP_UNKNOWN的 Pss + SwapPss Dirty - Private Dirty - Private Clean |
TOTAL | Native HeapDalvik HeapHEAP_UNKNOWN的 Pss + SwapPss Dirty |
TOTAL SWAP PSS | Native HeapDalvik HeapHEAP_UNKNOWN的 SwapPss Dirty |
TOTAL SWAP (KB) | Native HEAPDalvik HeapHEAP_UNKNOWN的 Swap Dirty |
Object:
这里通常会通过看Activities、AppContexts来判断是否有内存泄漏,比如刚退出应用,查看Object中Activities是否为0,如果 不为0,则有Activity没有销毁,很有可能存在泄漏。