MAX_CACHED_PROCESSES = mParser.getInt(KEY_MAX_CACHED_PROCESSES, DEFAULT_MAX_CACHED_PROCESSES); BACKGROUND_SETTLE_TIME = mParser.getLong(KEY_BACKGROUND_SETTLE_TIME, DEFAULT_BACKGROUND_SETTLE_TIME); ... } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18...
里面的定义了默认最大可以缓存的进程数量 privatestaticfinalintDEFAULT_MAX_CACHED_PROCESSES=32; /frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java ActivityManagerServic中提供了对外操作的方法,可以清楚看到,方法中首先去检查权限 @OverridepublicvoidsetProcessLimit(intmax){enforce...
同时配置zygote为32-bit: PRODUCT_DEFAULT_PROPERTY_OVERRIDES+= ro.zygote=zygote32 五、AMS 部分的参数调整 修改代码frameworks\base\services\core\java\com\android\server\am\ActivityManagerConstants.java: 调整默认后台最大缓存进程数为 16: privatestaticfinalintDEFAULT_MAX_CACHED_PROCESSES = SystemProperties.get...
scaleMem:scaleDisp;if(scale<0)scale=0;elseif(scale>1)scale=1;...finalbooleanis64bit=Build.SUPPORTED_64_BIT_ABIS.length>0;for(inti=0;i<mOomAdj.length;i++){intlow=mOomMinFreeLow[i];inthigh=mOomMinFreeHigh[i];if(is64bit){// Increase the high min-free levels for cached processes ...
CACHED_APP_MAX_ADJ = 15 : 不可见进程的 oom_adj 最大值 ; CACHED_APP_MIN_ADJ = 9 : 不可见进程的 oom_adj 最小值 ; SERVICE_B_ADJ = 8 : 在 B 列表中的 Service 服务 , 这些服务比较老 , 再次使用的可能性较小 ; PREVIOUS_APP_ADJ = 7 : 上一个应用程序进程 , 即上一次按下返回键退出...
By default we allow up to 32 such processes; the process with the worst oom adj score of their parents will be killed if there are too many of them. Check PhantomProcessList commit history here. The Trimming phantom processes log entry is from here. Basically, not a Termux issue and users...
mPersistentStartingProcesses.add(app); startProcessLocked(app,"added application", customProcess !=null? customProcess : app.processName, abiOverride); }returnapp; } 开机过程会先启动persistent进程,并赋予maxAdj为PERSISTENT_PROC_ADJ,调用链:
This is called when the overall system is running low on memory, and actively running processes should trim their memory usage. (Inherited from Activity) OnMenuItemSelected(Int32, IMenuItem) Default implementation of android.view.Window.Callback#onMenuItemSelected for activities. (Inherited from ...
The Android system attempts to keep an application process around for as long as possible, but eventually will need to remove old processes when memory runs low. As described in Activity Lifecycle, the decision about which process to remove is intimately tied to the state of the user's interac...
一、oom_adj 值对应的进程优先级 oom_adj 值对应的进程优先级 :优先级从上到下越来越高 , 最下面的优先级最高 , 最上面的优先级最低 ; UNKNOWN_ADJ = 16 :缓存进程 ; CACHED_APP_MAX_ADJ = 15 :不可见进程的 oom_adj 最大值 ; CACHED_APP_MIN_ADJ = 9 :不可见进程的 oom_adj 最小值 ; ...