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am ed512c81: Merge "Fix issue #17948288: Improve accuracy of memory use reporting" into lmp-mr1-dev

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* commit 'ed512c817c090e2545db89e13837481f86e7596e':
  Fix issue #17948288: Improve accuracy of memory use reporting
This commit is contained in:
Dianne Hackborn
2014-10-18 00:46:51 +00:00
committed by Android Git Automerger
parent c97924f493 ed512c817c
commit 2ea2bf2840
4 changed files with 72 additions and 27 deletions
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10
core/java/android/os/Debug.java
View File

@@ -1093,7 +1093,15 @@ href="{@docRoot}guide/developing/tools/traceview.html">Traceview: A Graphical Lo
/** @hide */
public static final int MEMINFO_ZRAM_TOTAL = 8;
/** @hide */
public static final int MEMINFO_COUNT = 9;
public static final int MEMINFO_MAPPED = 9;
/** @hide */
public static final int MEMINFO_VM_ALLOC_USED = 10;
/** @hide */
public static final int MEMINFO_PAGE_TABLES = 11;
/** @hide */
public static final int MEMINFO_KERNEL_STACK = 12;
/** @hide */
public static final int MEMINFO_COUNT = 13;
/**
* Retrieves /proc/meminfo. outSizes is filled with fields

49
core/java/com/android/internal/util/MemInfoReader.java
View File

@@ -34,40 +34,65 @@ public final class MemInfoReader {
}
}
/**
* Total amount of RAM available to the kernel.
*/
public long getTotalSize() {
return mInfos[Debug.MEMINFO_TOTAL] * 1024;
}
/**
* Amount of RAM that is not being used for anything.
*/
public long getFreeSize() {
return mInfos[Debug.MEMINFO_FREE] * 1024;
}
/**
* Amount of RAM that the kernel is being used for caches, not counting caches
* that are mapped in to processes.
*/
public long getCachedSize() {
return mInfos[Debug.MEMINFO_CACHED] * 1024;
return getCachedSizeKb() * 1024;
}
/**
* Amount of RAM that is in use by the kernel for actual allocations.
*/
public long getKernelUsedSize() {
return getKernelUsedSizeKb() * 1024;
}
/**
* Total amount of RAM available to the kernel.
*/
public long getTotalSizeKb() {
return mInfos[Debug.MEMINFO_TOTAL];
}
/**
* Amount of RAM that is not being used for anything.
*/
public long getFreeSizeKb() {
return mInfos[Debug.MEMINFO_FREE];
}
/**
* Amount of RAM that the kernel is being used for caches, not counting caches
* that are mapped in to processes.
*/
public long getCachedSizeKb() {
return mInfos[Debug.MEMINFO_CACHED];
return mInfos[Debug.MEMINFO_BUFFERS]
+ mInfos[Debug.MEMINFO_CACHED] - mInfos[Debug.MEMINFO_MAPPED];
}
public long getBuffersSizeKb() {
return mInfos[Debug.MEMINFO_BUFFERS];
}
public long getShmemSizeKb() {
return mInfos[Debug.MEMINFO_SHMEM];
}
public long getSlabSizeKb() {
return mInfos[Debug.MEMINFO_SLAB];
/**
* Amount of RAM that is in use by the kernel for actual allocations.
*/
public long getKernelUsedSizeKb() {
return mInfos[Debug.MEMINFO_SHMEM] + mInfos[Debug.MEMINFO_SLAB]
+ mInfos[Debug.MEMINFO_VM_ALLOC_USED] + mInfos[Debug.MEMINFO_PAGE_TABLES]
+ mInfos[Debug.MEMINFO_KERNEL_STACK];
}
public long getSwapTotalSizeKb() {

18
core/jni/android_os_Debug.cpp
View File

@@ -552,6 +552,10 @@ enum {
MEMINFO_SWAP_TOTAL,
MEMINFO_SWAP_FREE,
MEMINFO_ZRAM_TOTAL,
MEMINFO_MAPPED,
MEMINFO_VMALLOC_USED,
MEMINFO_PAGE_TABLES,
MEMINFO_KERNEL_STACK,
MEMINFO_COUNT
};
@@ -590,6 +594,11 @@ static void android_os_Debug_getMemInfo(JNIEnv *env, jobject clazz, jlongArray o
"Slab:",
"SwapTotal:",
"SwapFree:",
"ZRam:",
"Mapped:",
"VmallocUsed:",
"PageTables:",
"KernelStack:",
NULL
};
static const int tagsLen[] = {
@@ -601,12 +610,17 @@ static void android_os_Debug_getMemInfo(JNIEnv *env, jobject clazz, jlongArray o
5,
10,
9,
5,
7,
12,
11,
12,
0
};
long mem[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
long mem[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
char* p = buffer;
while (*p && numFound < 8) {
while (*p && numFound < 13) {
int i = 0;
while (tags[i]) {
if (strncmp(p, tags[i], tagsLen[i]) == 0) {

22
services/core/java/com/android/server/am/ActivityManagerService.java
View File

@@ -1734,8 +1734,13 @@ public final class ActivityManagerService extends ActivityManagerNative
logBuilder.append(" MemInfo: ");
logBuilder.append(infos[Debug.MEMINFO_SLAB]).append(" kB slab, ");
logBuilder.append(infos[Debug.MEMINFO_SHMEM]).append(" kB shmem, ");
logBuilder.append(infos[Debug.MEMINFO_VM_ALLOC_USED]).append(" kB vm alloc, ");
logBuilder.append(infos[Debug.MEMINFO_PAGE_TABLES]).append(" kB page tables ");
logBuilder.append(infos[Debug.MEMINFO_KERNEL_STACK]).append(" kB kernel stack\n");
logBuilder.append(" ");
logBuilder.append(infos[Debug.MEMINFO_BUFFERS]).append(" kB buffers, ");
logBuilder.append(infos[Debug.MEMINFO_CACHED]).append(" kB cached, ");
logBuilder.append(infos[Debug.MEMINFO_MAPPED]).append(" kB mapped, ");
logBuilder.append(infos[Debug.MEMINFO_FREE]).append(" kB free\n");
if (infos[Debug.MEMINFO_ZRAM_TOTAL] != 0) {
logBuilder.append(" ZRAM: ");
@@ -1952,9 +1957,7 @@ public final class ActivityManagerService extends ActivityManagerNative
+ (SystemClock.uptimeMillis()-start) + "ms");
mProcessStats.addSysMemUsageLocked(memInfo.getCachedSizeKb(),
memInfo.getFreeSizeKb(), memInfo.getZramTotalSizeKb(),
memInfo.getBuffersSizeKb()+memInfo.getShmemSizeKb()
+memInfo.getSlabSizeKb(),
nativeTotalPss);
memInfo.getKernelUsedSizeKb(), nativeTotalPss);
}
}
@@ -14240,8 +14243,7 @@ public final class ActivityManagerService extends ActivityManagerNative
synchronized (this) {
mProcessStats.addSysMemUsageLocked(memInfo.getCachedSizeKb(),
memInfo.getFreeSizeKb(), memInfo.getZramTotalSizeKb(),
memInfo.getBuffersSizeKb()+memInfo.getShmemSizeKb()+memInfo.getSlabSizeKb(),
nativeProcTotalPss);
memInfo.getKernelUsedSizeKb(), nativeProcTotalPss);
}
}
if (!brief) {
@@ -14280,16 +14282,12 @@ public final class ActivityManagerService extends ActivityManagerNative
}
if (!isCompact) {
pw.print(" Used RAM: "); pw.print(totalPss - cachedPss
+ memInfo.getBuffersSizeKb() + memInfo.getShmemSizeKb()
+ memInfo.getSlabSizeKb()); pw.print(" kB (");
+ memInfo.getKernelUsedSizeKb()); pw.print(" kB (");
pw.print(totalPss - cachedPss); pw.print(" used pss + ");
pw.print(memInfo.getBuffersSizeKb()); pw.print(" buffers + ");
pw.print(memInfo.getShmemSizeKb()); pw.print(" shmem + ");
pw.print(memInfo.getSlabSizeKb()); pw.println(" slab)");
pw.print(memInfo.getKernelUsedSizeKb()); pw.print(" kernel)\n");
pw.print(" Lost RAM: "); pw.print(memInfo.getTotalSizeKb()
- totalPss - memInfo.getFreeSizeKb() - memInfo.getCachedSizeKb()
- memInfo.getBuffersSizeKb() - memInfo.getShmemSizeKb()
- memInfo.getSlabSizeKb()); pw.println(" kB");
- memInfo.getKernelUsedSizeKb()); pw.println(" kB");
}
if (!brief) {
if (memInfo.getZramTotalSizeKb() != 0) {