Report SwapPss in dumpsys meminfo when requested and available

When requested (-a or -S options), add to the meminfo dump the
proportional swap when available to the system. The reported amount is
the PSS memory not having being accessed recently and being swapped out
of memory.

Total PSS by process:
     76,265K: system (pid 912)                                             (      290K in swap)
     67,080K: com.android.systemui (pid 3133)                              (      270K in swap)
...
Total PSS by category:
    287,803K: .dex mmap                                                    (        0K in swap)
    264,575K: Native                                                       (   25,184K in swap)
    241,077K: Dalvik                                                       (    9,391K in swap)

Bug: 26190445
Change-Id: I96415ec65b60c9f60e397d2b3acca9a6e1399aba

diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 43995ff..86d8d79 100644 (file)
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -15322,32 +15322,35 @@ public final class ActivityManagerService extends ActivityManagerNative
         final String label;
         final String shortLabel;
         final long pss;
+        final long swapPss;
         final int id;
         final boolean hasActivities;
         ArrayList<MemItem> subitems;
 
-        public MemItem(String _label, String _shortLabel, long _pss, int _id,
+        public MemItem(String _label, String _shortLabel, long _pss, long _swapPss, int _id,
                 boolean _hasActivities) {
             isProc = true;
             label = _label;
             shortLabel = _shortLabel;
             pss = _pss;
+            swapPss = _swapPss;
             id = _id;
             hasActivities = _hasActivities;
         }
 
-        public MemItem(String _label, String _shortLabel, long _pss, int _id) {
+        public MemItem(String _label, String _shortLabel, long _pss, long _swapPss, int _id) {
             isProc = false;
             label = _label;
             shortLabel = _shortLabel;
             pss = _pss;
+            swapPss = _swapPss;
             id = _id;
             hasActivities = false;
         }
     }
 
     static final void dumpMemItems(PrintWriter pw, String prefix, String tag,
-            ArrayList<MemItem> items, boolean sort, boolean isCompact) {
+            ArrayList<MemItem> items, boolean sort, boolean isCompact, boolean dumpSwapPss) {
         if (sort && !isCompact) {
             Collections.sort(items, new Comparator<MemItem>() {
                 @Override
@@ -15365,18 +15368,24 @@ public final class ActivityManagerService extends ActivityManagerNative
         for (int i=0; i<items.size(); i++) {
             MemItem mi = items.get(i);
             if (!isCompact) {
-                pw.printf("%s%s: %s\n", prefix, stringifyKBSize(mi.pss), mi.label);
+                if (dumpSwapPss) {
+                    pw.printf("%s%s: %-60s (%s in swap)\n", prefix, stringifyKBSize(mi.pss),
+                            mi.label, stringifyKBSize(mi.swapPss));
+                } else {
+                    pw.printf("%s%s: %s\n", prefix, stringifyKBSize(mi.pss), mi.label);
+                }
             } else if (mi.isProc) {
                 pw.print("proc,"); pw.print(tag); pw.print(","); pw.print(mi.shortLabel);
-                pw.print(","); pw.print(mi.id); pw.print(","); pw.print(mi.pss);
+                pw.print(","); pw.print(mi.id); pw.print(","); pw.print(mi.pss); pw.print(",");
+                pw.print(dumpSwapPss ? mi.swapPss : "N/A");
                 pw.println(mi.hasActivities ? ",a" : ",e");
             } else {
                 pw.print(tag); pw.print(","); pw.print(mi.shortLabel); pw.print(",");
-                pw.println(mi.pss);
+                pw.println(mi.pss); pw.print(dumpSwapPss ? mi.swapPss : "N/A");
             }
             if (mi.subitems != null) {
-                dumpMemItems(pw, prefix + "           ", mi.shortLabel, mi.subitems,
-                        true, isCompact);
+                dumpMemItems(pw, prefix + "    ", mi.shortLabel, mi.subitems,
+                        true, isCompact, dumpSwapPss);
             }
         }
     }
@@ -15506,6 +15515,7 @@ public final class ActivityManagerService extends ActivityManagerNative
         boolean localOnly = false;
         boolean packages = false;
         boolean isCheckinRequest = false;
+        boolean dumpSwapPss = false;
 
         int opti = 0;
         while (opti < args.length) {
@@ -15518,6 +15528,7 @@ public final class ActivityManagerService extends ActivityManagerNative
                 dumpDetails = true;
                 dumpFullDetails = true;
                 dumpDalvik = true;
+                dumpSwapPss = true;
             } else if ("-d".equals(opt)) {
                 dumpDalvik = true;
             } else if ("-c".equals(opt)) {
@@ -15525,6 +15536,8 @@ public final class ActivityManagerService extends ActivityManagerNative
             } else if ("-s".equals(opt)) {
                 dumpDetails = true;
                 dumpSummaryOnly = true;
+            } else if ("-S".equals(opt)) {
+                dumpSwapPss = true;
             } else if ("--oom".equals(opt)) {
                 oomOnly = true;
             } else if ("--local".equals(opt)) {
@@ -15540,6 +15553,7 @@ public final class ActivityManagerService extends ActivityManagerNative
                 pw.println("  -d: include dalvik details.");
                 pw.println("  -c: dump in a compact machine-parseable representation.");
                 pw.println("  -s: dump only summary of application memory usage.");
+                pw.println("  -S: dump also SwapPss.");
                 pw.println("  --oom: only show processes organized by oom adj.");
                 pw.println("  --local: only collect details locally, don't call process.");
                 pw.println("  --package: interpret process arg as package, dumping all");
@@ -15624,18 +15638,28 @@ public final class ActivityManagerService extends ActivityManagerNative
         ArrayList<MemItem> procMems = new ArrayList<MemItem>();
         final SparseArray<MemItem> procMemsMap = new SparseArray<MemItem>();
         long nativePss = 0;
+        long nativeSwapPss = 0;
         long dalvikPss = 0;
+        long dalvikSwapPss = 0;
         long[] dalvikSubitemPss = dumpDalvik ? new long[Debug.MemoryInfo.NUM_DVK_STATS] :
                 EmptyArray.LONG;
+        long[] dalvikSubitemSwapPss = dumpDalvik ? new long[Debug.MemoryInfo.NUM_DVK_STATS] :
+                EmptyArray.LONG;
         long otherPss = 0;
+        long otherSwapPss = 0;
         long[] miscPss = new long[Debug.MemoryInfo.NUM_OTHER_STATS];
+        long[] miscSwapPss = new long[Debug.MemoryInfo.NUM_OTHER_STATS];
 
         long oomPss[] = new long[DUMP_MEM_OOM_LABEL.length];
+        long oomSwapPss[] = new long[DUMP_MEM_OOM_LABEL.length];
         ArrayList<MemItem>[] oomProcs = (ArrayList<MemItem>[])
                 new ArrayList[DUMP_MEM_OOM_LABEL.length];
 
         long totalPss = 0;
+        long totalSwapPss = 0;
         long cachedPss = 0;
+        long cachedSwapPss = 0;
+        boolean hasSwapPss = false;
 
         Debug.MemoryInfo mi = null;
         for (int i = procs.size() - 1 ; i >= 0 ; i--) {
@@ -15659,6 +15683,7 @@ public final class ActivityManagerService extends ActivityManagerNative
                 }
                 if (dumpDetails || (!brief && !oomOnly)) {
                     Debug.getMemoryInfo(pid, mi);
+                    hasSwapPss = mi.hasSwappedOutPss;
                 } else {
                     mi.dalvikPss = (int)Debug.getPss(pid, tmpLong, null);
                     mi.dalvikPrivateDirty = (int)tmpLong[0];
@@ -15686,6 +15711,7 @@ public final class ActivityManagerService extends ActivityManagerNative
 
                 final long myTotalPss = mi.getTotalPss();
                 final long myTotalUss = mi.getTotalUss();
+                final long myTotalSwapPss = mi.getTotalSwappedOutPss();
 
                 synchronized (this) {
                     if (r.thread != null && oomAdj == r.getSetAdjWithServices()) {
@@ -15696,32 +15722,43 @@ public final class ActivityManagerService extends ActivityManagerNative
 
                 if (!isCheckinRequest && mi != null) {
                     totalPss += myTotalPss;
+                    totalSwapPss += myTotalSwapPss;
                     MemItem pssItem = new MemItem(r.processName + " (pid " + pid +
-                            (hasActivities ? " / activities)" : ")"),
-                            r.processName, myTotalPss, pid, hasActivities);
+                            (hasActivities ? " / activities)" : ")"), r.processName, myTotalPss,
+                            myTotalSwapPss, pid, hasActivities);
                     procMems.add(pssItem);
                     procMemsMap.put(pid, pssItem);
 
                     nativePss += mi.nativePss;
+                    nativeSwapPss += mi.nativeSwappedOutPss;
                     dalvikPss += mi.dalvikPss;
+                    dalvikSwapPss += mi.dalvikSwappedOutPss;
                     for (int j=0; j<dalvikSubitemPss.length; j++) {
                         dalvikSubitemPss[j] += mi.getOtherPss(Debug.MemoryInfo.NUM_OTHER_STATS + j);
+                        dalvikSubitemSwapPss[j] +=
+                                mi.getOtherSwappedOutPss(Debug.MemoryInfo.NUM_OTHER_STATS + j);
                     }
                     otherPss += mi.otherPss;
+                    otherSwapPss += mi.otherSwappedOutPss;
                     for (int j=0; j<Debug.MemoryInfo.NUM_OTHER_STATS; j++) {
                         long mem = mi.getOtherPss(j);
                         miscPss[j] += mem;
                         otherPss -= mem;
+                        mem = mi.getOtherSwappedOutPss(j);
+                        miscSwapPss[j] += mem;
+                        otherSwapPss -= mem;
                     }
 
                     if (oomAdj >= ProcessList.CACHED_APP_MIN_ADJ) {
                         cachedPss += myTotalPss;
+                        cachedSwapPss += myTotalSwapPss;
                     }
 
                     for (int oomIndex=0; oomIndex<oomPss.length; oomIndex++) {
                         if (oomAdj <= DUMP_MEM_OOM_ADJ[oomIndex]
                                 || oomIndex == (oomPss.length-1)) {
                             oomPss[oomIndex] += myTotalPss;
+                            oomSwapPss[oomIndex] += myTotalSwapPss;
                             if (oomProcs[oomIndex] == null) {
                                 oomProcs[oomIndex] = new ArrayList<MemItem>();
                             }
@@ -15756,26 +15793,35 @@ public final class ActivityManagerService extends ActivityManagerNative
                         }
 
                         final long myTotalPss = mi.getTotalPss();
+                        final long myTotalSwapPss = mi.getTotalSwappedOutPss();
                         totalPss += myTotalPss;
                         nativeProcTotalPss += myTotalPss;
 
                         MemItem pssItem = new MemItem(st.name + " (pid " + st.pid + ")",
-                                st.name, myTotalPss, st.pid, false);
+                                st.name, myTotalPss, mi.getSummaryTotalSwapPss(), st.pid, false);
                         procMems.add(pssItem);
 
                         nativePss += mi.nativePss;
+                        nativeSwapPss += mi.nativeSwappedOutPss;
                         dalvikPss += mi.dalvikPss;
+                        dalvikSwapPss += mi.dalvikSwappedOutPss;
                         for (int j=0; j<dalvikSubitemPss.length; j++) {
-                            dalvikSubitemPss[j] += mi.getOtherPss(
-                                    Debug.MemoryInfo.NUM_OTHER_STATS + j);
+                            dalvikSubitemPss[j] += mi.getOtherPss(Debug.MemoryInfo.NUM_OTHER_STATS + j);
+                            dalvikSubitemSwapPss[j] +=
+                                    mi.getOtherSwappedOutPss(Debug.MemoryInfo.NUM_OTHER_STATS + j);
                         }
                         otherPss += mi.otherPss;
+                        otherSwapPss += mi.otherSwappedOutPss;
                         for (int j=0; j<Debug.MemoryInfo.NUM_OTHER_STATS; j++) {
                             long mem = mi.getOtherPss(j);
                             miscPss[j] += mem;
                             otherPss -= mem;
+                            mem = mi.getOtherSwappedOutPss(j);
+                            miscSwapPss[j] += mem;
+                            otherSwapPss -= mem;
                         }
                         oomPss[0] += myTotalPss;
+                        oomSwapPss[0] += myTotalSwapPss;
                         if (oomProcs[0] == null) {
                             oomProcs[0] = new ArrayList<MemItem>();
                         }
@@ -15786,21 +15832,23 @@ public final class ActivityManagerService extends ActivityManagerNative
 
             ArrayList<MemItem> catMems = new ArrayList<MemItem>();
 
-            catMems.add(new MemItem("Native", "Native", nativePss, -1));
-            final MemItem dalvikItem = new MemItem("Dalvik", "Dalvik", dalvikPss, -2);
+            catMems.add(new MemItem("Native", "Native", nativePss, nativeSwapPss, -1));
+            final MemItem dalvikItem =
+                    new MemItem("Dalvik", "Dalvik", dalvikPss, dalvikSwapPss, -2);
             if (dalvikSubitemPss.length > 0) {
                 dalvikItem.subitems = new ArrayList<MemItem>();
                 for (int j=0; j<dalvikSubitemPss.length; j++) {
                     final String name = Debug.MemoryInfo.getOtherLabel(
                             Debug.MemoryInfo.NUM_OTHER_STATS + j);
-                    dalvikItem.subitems.add(new MemItem(name, name, dalvikSubitemPss[j], j));
+                    dalvikItem.subitems.add(new MemItem(name, name, dalvikSubitemPss[j],
+                                    dalvikSubitemSwapPss[j], j));
                 }
             }
             catMems.add(dalvikItem);
-            catMems.add(new MemItem("Unknown", "Unknown", otherPss, -3));
+            catMems.add(new MemItem("Unknown", "Unknown", otherPss, otherSwapPss, -3));
             for (int j=0; j<Debug.MemoryInfo.NUM_OTHER_STATS; j++) {
                 String label = Debug.MemoryInfo.getOtherLabel(j);
-                catMems.add(new MemItem(label, label, miscPss[j], j));
+                catMems.add(new MemItem(label, label, miscPss[j], miscSwapPss[j], j));
             }
 
             ArrayList<MemItem> oomMems = new ArrayList<MemItem>();
@@ -15808,30 +15856,31 @@ public final class ActivityManagerService extends ActivityManagerNative
                 if (oomPss[j] != 0) {
                     String label = isCompact ? DUMP_MEM_OOM_COMPACT_LABEL[j]
                             : DUMP_MEM_OOM_LABEL[j];
-                    MemItem item = new MemItem(label, label, oomPss[j],
+                    MemItem item = new MemItem(label, label, oomPss[j], oomSwapPss[j],
                             DUMP_MEM_OOM_ADJ[j]);
                     item.subitems = oomProcs[j];
                     oomMems.add(item);
                 }
             }
 
+            dumpSwapPss = dumpSwapPss && hasSwapPss && totalSwapPss != 0;
             if (!brief && !oomOnly && !isCompact) {
                 pw.println();
                 pw.println("Total PSS by process:");
-                dumpMemItems(pw, "  ", "proc", procMems, true, isCompact);
+                dumpMemItems(pw, "  ", "proc", procMems, true, isCompact, dumpSwapPss);
                 pw.println();
             }
             if (!isCompact) {
                 pw.println("Total PSS by OOM adjustment:");
             }
-            dumpMemItems(pw, "  ", "oom", oomMems, false, isCompact);
+            dumpMemItems(pw, "  ", "oom", oomMems, false, isCompact, dumpSwapPss);
             if (!brief && !oomOnly) {
                 PrintWriter out = categoryPw != null ? categoryPw : pw;
                 if (!isCompact) {
                     out.println();
                     out.println("Total PSS by category:");
                 }
-                dumpMemItems(out, "  ", "cat", catMems, true, isCompact);
+                dumpMemItems(out, "  ", "cat", catMems, true, isCompact, dumpSwapPss);
             }
             if (!isCompact) {
                 pw.println();