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Commit 221b19e9 authored by Michael Wachenschwanz's avatar Michael Wachenschwanz
Browse files

Lower SMS background importance 

The messaging app is currently bound with the BIND_NOT_VISIBLE flag
by the system. This keeps it in the oom score 200 slot, which
competes with higher priority processes like foreground services.
Binding with BIND_ALMOST_PERCEPTIBLE will lower its background
importance to 201, keeping it warm in memory for snappier UX but
allows them to die in favor of process doing more important work.

Flag: com.android.server.am.lower_sms_oom_importance
Fixes: 372511805
Test: manual (`adb shell dumpsys activity lru`, background sms
process should have `prcp+1` oom score.)

Change-Id: Ia4fef6afa57ff822e5122e1716ea05462dd1ed48
parent 6c118a5b

services/core/java/com/android/server/am/flags.aconfig

+11 −0
Original line number Diff line number Diff line
@@ -319,3 +319,14 @@ flag { 
        purpose: PURPOSE_BUGFIX

    }

}



flag {

    name: "lower_sms_oom_importance"

    namespace: "backstage_power"

    description: "Lower messaging app process oom importance to PERCEPTIBLE_APP_ADJ + 1."

    bug: "372511805"

    is_fixed_read_only: true

    metadata {

        purpose: PURPOSE_BUGFIX

    }

}

services/core/java/com/android/server/appbinding/AppBindingConstants.java

+10 −3
Original line number Diff line number Diff line
@@ -102,9 +102,16 @@ public class AppBindingConstants { 


        boolean smsServiceEnabled = parser.getBoolean(SMS_SERVICE_ENABLED_KEY, true);



        int smsAppBindFlags = parser.getInt(

        int smsAppBindFlags;

        if (com.android.server.am.Flags.lowerSmsOomImportance()) {

            smsAppBindFlags = parser.getInt(

                    SMS_APP_BIND_FLAGS_KEY,

                    Context.BIND_ALMOST_PERCEPTIBLE | Context.BIND_FOREGROUND_SERVICE);

        } else {

            smsAppBindFlags = parser.getInt(

                    SMS_APP_BIND_FLAGS_KEY,

                    Context.BIND_NOT_VISIBLE | Context.BIND_FOREGROUND_SERVICE);

        }



        long serviceStableConnectionThresholdSec = parser.getLong(

                SERVICE_STABLE_CONNECTION_THRESHOLD_SEC_KEY, TimeUnit.MINUTES.toSeconds(2));