我有一个奇怪的问题。
我创建了一个在三星 Galaxy S2（堆大小为 48MB）上运行良好的应用程序，但是当我在摩托罗拉 Xoom（堆大小也是 48MB）上对其进行测试时，它退出并出现 OutOfMemory 错误。
这特别奇怪，因为据我所知，我实际上只将大约 20MB 的数据加载到堆中。
每次崩溃都发生在同一个地方，这是我将字典文件加载到 Vector 中时（该应用程序是一个文字游戏，正在加载的字典文件大约 2MB 并位于 assets 文件夹中）。字典把它写到以 R 开头的单词，然后放弃了 ghost。
三星运行的是 Android 2.2，Xoom 运行的是 4.0.3
这是加载字典的代码：
public class Dictionary {
Vector words = new Vector();
public Dictionary() {
}
public void loadWords(String dFile) {
try {
InputStream is = AndroidFileIO.assets.open(dFile);
BufferedReader f = new BufferedReader(new InputStreamReader(is), 8192);
String word = null;
if (is != null) {
while ((word = f.readLine()) != null) {
words.addElement(word.toUpperCase());
}
}
is.close();
f = null;
} catch (Exception e) {
System.err.println("Unable to read from " + dFile);
// continue with empty dictionary
}
}
...这是 LogCat 输出：
01-27 17:16:12.750: D/dalvikvm(9050): GC_FOR_ALLOC freed 63K, 4% free 6529K/6787K, paused 53ms
01-27 17:16:12.760: I/dalvikvm-heap(9050): Grow heap (frag case) to 8.383MB for 2048016-byte allocation
01-27 17:16:12.810: D/dalvikvm(9050): GC_CONCURRENT freed <1K, 4% free 8529K/8839K, paused 2ms+8ms
01-27 17:16:12.870: D/dalvikvm(9050): GC_FOR_ALLOC freed 20K, 4% free 8543K/8839K, paused 25ms
01-27 17:16:12.890: I/dalvikvm-heap(9050): Grow heap (frag case) to 12.302MB for 4096016-byte allocation
01-27 17:16:12.940: D/dalvikvm(9050): GC_FOR_ALLOC freed 0K, 3% free 12543K/12871K, paused 24ms
01-27 17:16:12.980: D/dalvikvm(9050): GC_CONCURRENT freed <1K, 3% free 12543K/12871K, paused 3ms+3ms
01-27 17:16:13.350: D/libEGL(9050): loaded /system/lib/egl/libGLES_android.so
01-27 17:16:13.360: D/libEGL(9050): loaded /system/lib/egl/libEGL_tegra.so
01-27 17:16:13.390: D/libEGL(9050): loaded /system/lib/egl/libGLESv1_CM_tegra.so
01-27 17:16:13.400: D/libEGL(9050): loaded /system/lib/egl/libGLESv2_tegra.so
01-27 17:16:13.440: D/OpenGLRenderer(9050): Enabling debug mode 0
01-27 17:16:13.840: D/dalvikvm(9050): GC_FOR_ALLOC freed 11K, 1% free 14001K/14087K, paused 20ms
01-27 17:16:13.890: D/dalvikvm(9050): GC_CONCURRENT freed 1K, 1% free 16000K/16135K, paused 2ms+3ms
01-27 17:16:13.990: D/dalvikvm(9050): GC_FOR_ALLOC freed <1K, 1% free 16001K/16135K, paused 19ms
01-27 17:16:14.000: I/dalvikvm-heap(9050): Grow heap (frag case) to 19.585MB for 4096016-byte allocation
01-27 17:16:14.060: D/dalvikvm(9050): GC_CONCURRENT freed <1K, 1% free 20001K/20167K, paused 1ms+20ms
01-27 17:16:14.370: D/dalvikvm(9050): GC_FOR_ALLOC freed <1K, 1% free 20001K/20167K, paused 17ms
01-27 17:16:14.380: I/dalvikvm-heap(9050): Grow heap (frag case) to 21.540MB for 2048016-byte allocation
01-27 17:16:14.420: D/dalvikvm(9050): GC_CONCURRENT freed <1K, 1% free 22001K/22215K, paused 2ms+3ms
01-27 17:16:14.510: D/dalvikvm(9050): GC_FOR_ALLOC freed <1K, 1% free 22001K/22215K, paused 17ms
01-27 17:16:14.520: I/dalvikvm-heap(9050): Grow heap (frag case) to 25.446MB for 4096016-byte allocation
01-27 17:16:14.540: D/dalvikvm(9050): GC_CONCURRENT freed <1K, 1% free 26001K/26247K, paused 2ms+3ms
01-27 17:16:14.840: D/dalvikvm(9050): GC_FOR_ALLOC freed <1K, 1% free 26001K/26247K, paused 20ms
01-27 17:16:14.840: I/dalvikvm-heap(9050): Grow heap (frag case) to 27.399MB for 2048016-byte allocation
01-27 17:16:14.870: D/dalvikvm(9050): GC_CONCURRENT freed <1K, 2% free 28001K/28295K, paused 1ms+3ms
01-27 17:16:15.070: D/dalvikvm(9050): GC_FOR_ALLOC freed <1K, 2% free 28389K/28743K, paused 20ms
01-27 17:16:15.080: I/dalvikvm-heap(9050): Grow heap (frag case) to 31.683MB for 4096016-byte allocation
01-27 17:16:15.130: D/dalvikvm(9050): GC_CONCURRENT freed <1K, 2% free 32388K/32775K, paused 2ms+3ms
01-27 17:16:15.220: D/dalvikvm(9050): GC_FOR_ALLOC freed 1K, 2% free 32390K/32775K, paused 19ms
01-27 17:16:15.220: I/dalvikvm-heap(9050): Grow heap (frag case) to 35.591MB for 4096016-byte allocation
01-27 17:16:15.260: D/dalvikvm(9050): GC_CONCURRENT freed <1K, 2% free 36390K/36807K, paused 1ms+4ms
01-27 17:16:16.510: D/dalvikvm(9050): GC_CONCURRENT freed 554K, 2% free 37925K/38535K, paused 2ms+5ms
01-27 17:16:16.940: D/dalvikvm(9050): GC_CONCURRENT freed 1047K, 3% free 38914K/40071K, paused 2ms+6ms
01-27 17:16:17.150: D/dalvikvm(9050): GC_CONCURRENT freed 982K, 3% free 39891K/41031K, paused 2ms+8ms
01-27 17:16:17.430: D/dalvikvm(9050): GC_CONCURRENT freed 1012K, 3% free 40876K/42055K, paused 2ms+8ms
01-27 17:16:17.770: D/dalvikvm(9050): GC_FOR_ALLOC freed 997K, 3% free 41820K/43015K, paused 65ms
01-27 17:16:18.100: D/dalvikvm(9050): GC_FOR_ALLOC freed 989K, 3% free 42757K/43975K, paused 75ms
01-27 17:16:18.480: D/dalvikvm(9050): GC_FOR_ALLOC freed 950K, 3% free 43636K/44871K, paused 81ms
01-27 17:16:18.780: D/dalvikvm(9050): GC_FOR_ALLOC freed 940K, 3% free 44525K/45767K, paused 84ms
01-27 17:16:19.130: D/dalvikvm(9050): GC_FOR_ALLOC freed 946K, 3% free 45421K/46663K, paused 94ms
01-27 17:16:19.410: D/dalvikvm(9050): GC_FOR_ALLOC freed 905K, 3% free 46303K/47559K, paused 99ms
01-27 17:16:19.770: I/dalvikvm-heap(9050): Clamp target GC heap from 48.105MB to 48.000MB
01-27 17:16:19.770: D/dalvikvm(9050): GC_FOR_ALLOC freed 897K, 3% free 47157K/48455K, paused 106ms
01-27 17:16:20.050: I/dalvikvm-heap(9050): Clamp target GC heap from 48.855MB to 48.000MB
01-27 17:16:20.050: D/dalvikvm(9050): GC_FOR_ALLOC freed 793K, 3% free 47924K/49159K, paused 112ms
01-27 17:16:20.220: I/dalvikvm-heap(9050): Clamp target GC heap from 49.239MB to 48.000MB
01-27 17:16:20.220: D/dalvikvm(9050): GC_FOR_ALLOC freed 396K, 2% free 48317K/49159K, paused 112ms
01-27 17:16:20.360: I/dalvikvm-heap(9050): Clamp target GC heap from 49.439MB to 48.000MB
01-27 17:16:20.360: D/dalvikvm(9050): GC_FOR_ALLOC freed 206K, 2% free 48523K/49159K, paused 109ms
01-27 17:16:20.480: I/dalvikvm-heap(9050): Clamp target GC heap from 49.541MB to 48.000MB
01-27 17:16:20.480: D/dalvikvm(9050): GC_FOR_ALLOC freed 104K, 2% free 48626K/49159K, paused 107ms
01-27 17:16:20.600: I/dalvikvm-heap(9050): Clamp target GC heap from 49.592MB to 48.000MB
01-27 17:16:20.600: D/dalvikvm(9050): GC_FOR_ALLOC freed 53K, 1% free 48679K/49159K, paused 111ms
01-27 17:16:20.720: I/dalvikvm-heap(9050): Clamp target GC heap from 49.618MB to 48.000MB
01-27 17:16:20.730: D/dalvikvm(9050): GC_FOR_ALLOC freed 26K, 1% free 48706K/49159K, paused 117ms
01-27 17:16:20.830: I/dalvikvm-heap(9050): Clamp target GC heap from 49.628MB to 48.000MB
01-27 17:16:20.830: D/dalvikvm(9050): GC_FOR_ALLOC freed 11K, 1% free 48717K/49159K, paused 105ms
01-27 17:16:20.950: I/dalvikvm-heap(9050): Clamp target GC heap from 49.631MB to 48.000MB
01-27 17:16:20.950: D/dalvikvm(9050): GC_FOR_ALLOC freed 2K, 1% free 48719K/49159K, paused 114ms
01-27 17:16:21.060: I/dalvikvm-heap(9050): Clamp target GC heap from 49.633MB to 48.000MB
01-27 17:16:21.060: D/dalvikvm(9050): GC_FOR_ALLOC freed 1K, 1% free 48721K/49159K, paused 112ms
01-27 17:16:21.170: I/dalvikvm-heap(9050): Clamp target GC heap from 49.636MB to 48.000MB
01-27 17:16:21.170: D/dalvikvm(9050): GC_FOR_ALLOC freed 3K, 1% free 48724K/49159K, paused 108ms
01-27 17:16:21.170: I/dalvikvm-heap(9050): Forcing collection of SoftReferences for 176-byte allocation
01-27 17:16:21.300: I/dalvikvm-heap(9050): Clamp target GC heap from 49.628MB to 48.000MB
01-27 17:16:21.300: D/dalvikvm(9050): GC_BEFORE_OOM freed 9K, 1% free 48715K/49159K, paused 127ms
01-27 17:16:21.410: I/dalvikvm-heap(9050): Clamp target GC heap from 49.635MB to 48.000MB
01-27 17:16:21.410: D/dalvikvm(9050): GC_FOR_ALLOC freed 8K, 1% free 48722K/49159K, paused 108ms
01-27 17:16:21.520: I/dalvikvm-heap(9050): Clamp target GC heap from 49.639MB to 48.000MB
01-27 17:16:21.520: D/dalvikvm(9050): GC_FOR_ALLOC freed 4K, 1% free 48727K/49159K, paused 109ms
01-27 17:16:21.620: I/dalvikvm-heap(9050): Clamp target GC heap from 49.641MB to 48.000MB
01-27 17:16:21.620: D/dalvikvm(9050): GC_FOR_ALLOC freed 2K, 1% free 48729K/49159K, paused 109ms
01-27 17:16:21.730: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:21.730: D/dalvikvm(9050): GC_FOR_ALLOC freed 1K, 1% free 48730K/49159K, paused 105ms
01-27 17:16:21.840: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:21.840: D/dalvikvm(9050): GC_FOR_ALLOC freed <1K, 1% free 48730K/49159K, paused 110ms
01-27 17:16:21.950: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:21.950: D/dalvikvm(9050): GC_FOR_ALLOC freed <1K, 1% free 48730K/49159K, paused 106ms
01-27 17:16:22.050: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:22.050: D/dalvikvm(9050): GC_FOR_ALLOC freed 0K, 1% free 48730K/49159K, paused 106ms
01-27 17:16:22.050: I/dalvikvm-heap(9050): Forcing collection of SoftReferences for 44-byte allocation
01-27 17:16:22.170: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:22.170: D/dalvikvm(9050): GC_BEFORE_OOM freed 0K, 1% free 48730K/49159K, paused 119ms
01-27 17:16:22.170: E/dalvikvm-heap(9050): Out of memory on a 44-byte allocation.
01-27 17:16:22.170: I/dalvikvm(9050): "Thread-1489" prio=5 tid=13 RUNNABLE
01-27 17:16:22.170: I/dalvikvm(9050): | group="main" sCount=0 dsCount=0 obj=0x417e7bd8 self=0x1a6a168
01-27 17:16:22.170: I/dalvikvm(9050): | sysTid=9119 nice=0 sched=0/0 cgrp=default handle=27700176
01-27 17:16:22.180: I/dalvikvm(9050): | schedstat=( 6918844000 741848000 1627 ) utm=668 stm=23 core=0
01-27 17:16:22.180: I/dalvikvm(9050): at java.lang.String.<init>(String.java:~432)
01-27 17:16:22.180: I/dalvikvm(9050): at java.io.BufferedReader.readLine(BufferedReader.java:363)
01-27 17:16:22.180: I/dalvikvm(9050): at com.kittykazoo.game.Dictionary.loadWords(Dictionary.java:22)
01-27 17:16:22.180: I/dalvikvm(9050): at com.kittykazoo.gamecore.ScreenLoading.loadAssets(ScreenLoading.java:232)
01-27 17:16:22.180: I/dalvikvm(9050): at com.kittykazoo.gamecore.ScreenLoading.update(ScreenLoading.java:64)
01-27 17:16:22.180: I/dalvikvm(9050): at com.kittykazoo.framework.implementation.AndroidFastRenderView.run(AndroidFastRenderView.java:48)
01-27 17:16:22.180: I/dalvikvm(9050): at java.lang.Thread.run(Thread.java:856)
01-27 17:16:22.280: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:22.280: D/dalvikvm(9050): GC_FOR_ALLOC freed 0K, 1% free 48730K/49159K, paused 107ms
01-27 17:16:22.280: I/dalvikvm-heap(9050): Forcing collection of SoftReferences for 72-byte allocation
01-27 17:16:22.400: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:22.400: D/dalvikvm(9050): GC_BEFORE_OOM freed 0K, 1% free 48730K/49159K, paused 118ms
01-27 17:16:22.400: E/dalvikvm-heap(9050): Out of memory on a 72-byte allocation.
01-27 17:16:22.400: I/dalvikvm(9050): "Thread-1489" prio=5 tid=13 RUNNABLE
01-27 17:16:22.400: I/dalvikvm(9050): | group="main" sCount=0 dsCount=0 obj=0x417e7bd8 self=0x1a6a168
01-27 17:16:22.400: I/dalvikvm(9050): | sysTid=9119 nice=0 sched=0/0 cgrp=default handle=27700176
01-27 17:16:22.400: I/dalvikvm(9050): | schedstat=( 7142111000 746215000 1665 ) utm=690 stm=24 core=0
01-27 17:16:22.400: I/dalvikvm(9050): at java.lang.Throwable.nativeFillInStackTrace(Native Method)
01-27 17:16:22.400: I/dalvikvm(9050): at java.lang.Throwable.fillInStackTrace(Throwable.java:160)
01-27 17:16:22.400: I/dalvikvm(9050): at java.lang.Throwable.<init>(Throwable.java:83)
01-27 17:16:22.400: I/dalvikvm(9050): at java.lang.Error.<init>(Error.java:37)
01-27 17:16:22.400: I/dalvikvm(9050): at java.lang.VirtualMachineError.<init>(VirtualMachineError.java:35)
01-27 17:16:22.400: I/dalvikvm(9050): at java.lang.OutOfMemoryError.<init>(OutOfMemoryError.java:33)
01-27 17:16:22.400: I/dalvikvm(9050): at java.lang.String.<init>(String.java:-1)
01-27 17:16:22.400: I/dalvikvm(9050): at java.io.BufferedReader.readLine(BufferedReader.java:363)
01-27 17:16:22.400: I/dalvikvm(9050): at com.kittykazoo.game.Dictionary.loadWords(Dictionary.java:22)
01-27 17:16:22.400: I/dalvikvm(9050): at com.kittykazoo.gamecore.ScreenLoading.loadAssets(ScreenLoading.java:232)
01-27 17:16:22.400: I/dalvikvm(9050): at com.kittykazoo.gamecore.ScreenLoading.update(ScreenLoading.java:64)
01-27 17:16:22.400: I/dalvikvm(9050): at com.kittykazoo.framework.implementation.AndroidFastRenderView.run(AndroidFastRenderView.java:48)
01-27 17:16:22.400: I/dalvikvm(9050): at java.lang.Thread.run(Thread.java:856)
01-27 17:16:22.410: W/dalvikvm(9050): Exception thrown (Ljava/lang/OutOfMemoryError;) while throwing internal exception (Ljava/lang/OutOfMemoryError;)
01-27 17:16:22.510: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:22.510: D/dalvikvm(9050): GC_FOR_ALLOC freed <1K, 1% free 48730K/49159K, paused 106ms
01-27 17:16:22.510: I/dalvikvm-heap(9050): Forcing collection of SoftReferences for 54-byte allocation
01-27 17:16:22.630: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:22.630: D/dalvikvm(9050): GC_BEFORE_OOM freed 0K, 1% free 48730K/49159K, paused 122ms
01-27 17:16:22.630: E/dalvikvm-heap(9050): Out of memory on a 54-byte allocation.
01-27 17:16:22.630: I/dalvikvm(9050): "Thread-1489" prio=5 tid=13 RUNNABLE
01-27 17:16:22.630: I/dalvikvm(9050): | group="main" sCount=0 dsCount=0 obj=0x417e7bd8 self=0x1a6a168
01-27 17:16:22.630: I/dalvikvm(9050): | sysTid=9119 nice=0 sched=0/0 cgrp=default handle=27700176
01-27 17:16:22.630: I/dalvikvm(9050): | schedstat=( 7366692000 753065000 1725 ) utm=709 stm=27 core=0
01-27 17:16:22.630: I/dalvikvm(9050): at java.io.BufferedReader.readLine(BufferedReader.java:~422)
01-27 17:16:22.630: I/dalvikvm(9050): at com.kittykazoo.game.Dictionary.loadWords(Dictionary.java:22)
01-27 17:16:22.630: I/dalvikvm(9050): at com.kittykazoo.gamecore.ScreenLoading.loadAssets(ScreenLoading.java:232)
01-27 17:16:22.630: I/dalvikvm(9050): at com.kittykazoo.gamecore.ScreenLoading.update(ScreenLoading.java:64)
01-27 17:16:22.630: I/dalvikvm(9050): at com.kittykazoo.framework.implementation.AndroidFastRenderView.run(AndroidFastRenderView.java:48)
01-27 17:16:22.630: I/dalvikvm(9050): at java.lang.Thread.run(Thread.java:856)
01-27 17:16:22.750: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:22.750: D/dalvikvm(9050): GC_FOR_ALLOC freed 0K, 1% free 48730K/49159K, paused 112ms
01-27 17:16:22.750: I/dalvikvm-heap(9050): Forcing collection of SoftReferences for 64-byte allocation
01-27 17:16:22.870: I/dalvikvm-heap(9050): Clamp target GC heap from 49.643MB to 48.000MB
01-27 17:16:22.870: D/dalvikvm(9050): GC_BEFORE_OOM freed 0K, 1% free 48730K/49159K, paused 122ms
01-27 17:16:22.870: E/dalvikvm-heap(9050): Out of memory on a 64-byte allocation.
01-27 17:16:22.870: I/dalvikvm(9050): "Thread-1489" prio=5 tid=13 RUNNABLE
01-27 17:16:22.870: I/dalvikvm(9050): | group="main" sCount=0 dsCount=0 obj=0x417e7bd8 self=0x1a6a168
01-27 17:16:22.870: I/dalvikvm(9050): | sysTid=9119 nice=0 sched=0/0 cgrp=default handle=27700176
01-27 17:16:22.870: I/dalvikvm(9050): | schedstat=( 7590841000 762536000 1798 ) utm=731 stm=28 core=1
01-27 17:16:22.870: I/dalvikvm(9050): at java.lang.Throwable.nativeFillInStackTrace(Native Method)
01-27 17:16:22.870: I/dalvikvm(9050): at java.lang.Throwable.fillInStackTrace(Throwable.java:160)
01-27 17:16:22.870: I/dalvikvm(9050): at java.lang.Throwable.<init>(Throwable.java:83)
01-27 17:16:22.870: I/dalvikvm(9050): at java.lang.Error.<init>(Error.java:37)
01-27 17:16:22.870: I/dalvikvm(9050): at java.lang.VirtualMachineError.<init>(VirtualMachineError.java:35)
01-27 17:16:22.870: I/dalvikvm(9050): at java.lang.OutOfMemoryError.<init>(OutOfMemoryError.java:33)
01-27 17:16:22.870: I/dalvikvm(9050): at java.io.BufferedReader.readLine(BufferedReader.java:-1)
01-27 17:16:22.870: I/dalvikvm(9050): at com.kittykazoo.game.Dictionary.loadWords(Dictionary.java:22)
01-27 17:16:22.870: I/dalvikvm(9050): at com.kittykazoo.gamecore.ScreenLoading.loadAssets(ScreenLoading.java:232)
01-27 17:16:22.870: I/dalvikvm(9050): at com.kittykazoo.gamecore.ScreenLoading.update(ScreenLoading.java:64)
01-27 17:16:22.870: I/dalvikvm(9050): at com.kittykazoo.framework.implementation.AndroidFastRenderView.run(AndroidFastRenderView.java:48)
01-27 17:16:22.870: I/dalvikvm(9050): at java.lang.Thread.run(Thread.java:856)
01-27 17:16:22.870: W/dalvikvm(9050): Exception thrown (Ljava/lang/OutOfMemoryError;) while throwing internal exception (Ljava/lang/OutOfMemoryError;)
01-27 17:16:22.870: W/dalvikvm(9050): Could not resolve class ref'ed in exception catch list (class index 1237, exception Ljava/lang/OutOfMemoryError;)
01-27 17:16:22.870: W/dalvikvm(9050): threadid=13: thread exiting with uncaught exception (group=0x40a391f8)
01-27 17:16:23.000: I/dalvikvm-heap(9050): Clamp target GC heap from 49.620MB to 48.000MB
01-27 17:16:23.000: D/dalvikvm(9050): GC_FOR_ALLOC freed 24K, 1% free 48706K/49159K, paused 128ms
01-27 17:16:23.000: E/AndroidRuntime(9050): FATAL EXCEPTION: Thread-1489
01-27 17:16:23.000: E/AndroidRuntime(9050): java.lang.OutOfMemoryError: [memory exhausted]
01-27 17:16:23.000: E/AndroidRuntime(9050): at dalvik.system.NativeStart.main(Native Method)
01-27 17:18:00.910: I/Process(9050): Sending signal. PID: 9050 SIG: 9