这些时用idea跑junit时老是报错内存不足，具体报错信息如下：
# # There is insufficient memory for the Java Runtime Environment to continue. # Native memory allocation (malloc) failed to allocate 1745136 bytes for Chunk::new # Possible reasons: # The system is out of physical RAM or swap space # In 32 bit mode, the process size limit was hit # Possible solutions: # Reduce memory load on the system # Increase physical memory or swap space # Check if swap backing store is full # Use 64 bit Java on a 64 bit OS # Decrease Java heap size (-Xmx/-Xms) # Decrease number of Java threads # Decrease Java thread stack sizes (-Xss) # Set larger code cache with -XX:ReservedCodeCacheSize= # This output file may be truncated or incomplete. # # Out of Memory Error (allocation.cpp:390), pid=19388, tid=0x0000000000005668 # # JRE version: Java(TM) SE Runtime Environment (8.0_171-b11) (build 1.8.0_171-b11) # Java VM: Java HotSpot(TM) 64-Bit Server VM (25.171-b11 mixed mode windows-amd64 compressed oops) # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows # --------------- T H R E A D --------------- Current thread (0x0000000018a7e000): JavaThread "C2 CompilerThread1" daemon [_thread_in_native, id=22120, stack(0x00000000196b0000,0x00000000197b0000)] Stack: [0x00000000196b0000,0x00000000197b0000] [error occurred during error reporting (printing stack bounds), id 0xc0000005] Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) Current CompileTask: C2: 7094 3897 ! 4 org.springframework.util.ClassUtils::getMostSpecificMethod (72 bytes) --------------- P R O C E S S --------------- Java Threads: ( => current thread ) 0x000000001e062800 JavaThread "Abandoned connection cleanup thread" daemon [_thread_blocked, id=22584, stack(0x000000001ec90000,0x000000001ed90000)] 0x0000000018afe000 JavaThread "Service Thread" daemon [_thread_blocked, id=22960, stack(0x0000000019950000,0x0000000019a50000)] 0x0000000018ad8800 JavaThread "C1 CompilerThread2" daemon [_thread_blocked, id=21508, stack(0x0000000019590000,0x0000000019690000)] =>0x0000000018a7e000 JavaThread "C2 CompilerThread1" daemon [_thread_in_native, id=22120, stack(0x00000000196b0000,0x00000000197b0000)] 0x0000000018a7d000 JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=20620, stack(0x0000000019450000,0x0000000019550000)] 0x00000000178bf800 JavaThread "Monitor Ctrl-Break" daemon [_thread_in_native, id=22112, stack(0x00000000192d0000,0x00000000193d0000)] 0x0000000018a3e800 JavaThread "Attach Listener" daemon [_thread_blocked, id=3752, stack(0x0000000019110000,0x0000000019210000)] 0x00000000178b5800 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=16128, stack(0x0000000018f80000,0x0000000019080000)] 0x00000000178a2800 JavaThread "Finalizer" daemon [_thread_blocked, id=22732, stack(0x0000000018810000,0x0000000018910000)] 0x000000001785b800 JavaThread "Reference Handler" daemon [_thread_blocked, id=22736, stack(0x0000000018930000,0x0000000018a30000)] 0x0000000002430000 JavaThread "main" [_thread_in_Java, id=23428, stack(0x0000000002860000,0x0000000002960000)] Other Threads: 0x0000000017854000 VMThread [stack: 0x00000000186d0000,0x00000000187d0000] [id=23500] 0x0000000018b19800 WatcherThread [stack: 0x0000000019ae0000,0x0000000019be0000] [id=22200] VM state:not at safepoint (normal execution) VM Mutex/Monitor currently owned by a thread: None Heap: PSYoungGen total 226816K, used 51650K [0x00000000d5900000, 0x00000000ebf00000, 0x0000000100000000) eden space 211456K, 24% used [0x00000000d5900000,0x00000000d8b70a48,0x00000000e2780000) from space 15360K, 0% used [0x00000000e2780000,0x00000000e2780000,0x00000000e3680000) to space 17408K, 0% used [0x00000000eae00000,0x00000000eae00000,0x00000000ebf00000) ParOldGen total 96256K, used 19788K [0x0000000080a00000, 0x0000000086800000, 0x00000000d5900000) object space 96256K, 20% used [0x0000000080a00000,0x0000000081d533c8,0x0000000086800000) Metaspace used 34950K, capacity 36198K, committed 36312K, reserved 1081344K class space used 4554K, capacity 4829K, committed 4864K, reserved 1048576K Card table byte_map: [0x0000000011d20000,0x0000000012120000] byte_map_base: 0x000000001191b000 Marking Bits: (ParMarkBitMap*) 0x0000000053bc08c0 Begin Bits: [0x0000000012b10000, 0x0000000014ae8000) End Bits: [0x0000000014ae8000, 0x0000000016ac0000) Polling page: 0x0000000000330000 CodeCache: size=245760Kb used=15556Kb max_used=15585Kb free=230203Kb bounds [0x0000000002960000, 0x00000000038b0000, 0x0000000011960000] total_blobs=4449 nmethods=4028 adapters=331 compilation: enabled Compilation events (10 events): Event: 6.666 Thread 0x0000000018ad8800 4060 2 java.nio.charset.CharsetDecoder::implReplaceWith (1 bytes) Event: 6.666 Thread 0x0000000018ad8800 nmethod 4060 0x000000000389ce50 code [0x000000000389cfa0, 0x000000000389d0f0] Event: 6.685 Thread 0x0000000018ad8800 4062 3 org.springframework.util.StringUtils::tokenizeToStringArray (86 bytes) Event: 6.686 Thread 0x0000000018ad8800 nmethod 4062 0x000000000389d150 code [0x000000000389d3c0, 0x000000000389e4b8] Event: 6.815 Thread 0x0000000018ad8800 4064 2 sun.nio.cs.UTF_8$Decoder::decodeLoop (28 bytes) Event: 6.816 Thread 0x0000000018ad8800 nmethod 4064 0x000000000389edd0 code [0x000000000389ef40, 0x000000000389f158] Event: 6.963 Thread 0x0000000018ad8800 4066 % 3 java.util.StringTokenizer::setMaxDelimCodePoint @ 20 (156 bytes) Event: 6.963 Thread 0x0000000018ad8800 nmethod 4066% 0x000000000389f250 code [0x000000000389f440, 0x000000000389ffa8] Event: 6.963 Thread 0x0000000018ad8800 4067 3 java.util.StringTokenizer::setMaxDelimCodePoint (156 bytes) Event: 6.964 Thread 0x0000000018ad8800 nmethod 4067 0x0000000002a7bfd0 code [0x0000000002a7c1c0, 0x0000000002a7cca8] GC Heap History (10 events): Event: 2.250 GC heap before {Heap before GC invocations=5 (full 1): PSYoungGen total 138240K, used 5116K [0x00000000d5900000, 0x00000000de500000, 0x0000000100000000) eden space 133120K, 0% used [0x00000000d5900000,0x00000000d5900000,0x00000000ddb00000) from space 5120K, 99% used [0x00000000de000000,0x00000000de4ff2a8,0x00000000de500000) to space 5120K, 0% used [0x00000000ddb00000,0x00000000ddb00000,0x00000000de000000) ParOldGen total 87552K, used 6679K [0x0000000080a00000, 0x0000000085f80000, 0x00000000d5900000) object space 87552K, 7% used [0x0000000080a00000,0x0000000081085f98,0x0000000085f80000) Metaspace used 20579K, capacity 21168K, committed 21248K, reserved 1067008K class space used 2635K, capacity 2800K, committed 2816K, reserved 1048576K Event: 2.278 GC heap after Heap after GC invocations=5 (full 1): PSYoungGen total 138240K, used 0K [0x00000000d5900000, 0x00000000de500000, 0x0000000100000000) eden space 133120K, 0% used [0x00000000d5900000,0x00000000d5900000,0x00000000ddb00000) from space 5120K, 0% used [0x00000000de000000,0x00000000de000000,0x00000000de500000) to space 5120K, 0% used [0x00000000ddb00000,0x00000000ddb00000,0x00000000de000000) ParOldGen total 58880K, used 8578K [0x0000000080a00000, 0x0000000084380000, 0x00000000d5900000) object space 58880K, 14% used [0x0000000080a00000,0x00000000812608c8,0x0000000084380000) Metaspace used 20579K, capacity 21168K, committed 21248K, reserved 1067008K class space used 2635K, capacity 2800K, committed 2816K, reserved 1048576K } Event: 3.539 GC heap before {Heap before GC invocations=6 (full 1): PSYoungGen total 138240K, used 133120K [0x00000000d5900000, 0x00000000de500000, 0x0000000100000000) eden space 133120K, 100% used [0x00000000d5900000,0x00000000ddb00000,0x00000000ddb00000) from space 5120K, 0% used [0x00000000de000000,0x00000000de000000,0x00000000de500000) to space 5120K, 0% used [0x00000000ddb00000,0x00000000ddb00000,0x00000000de000000) ParOldGen total 58880K, used 8578K [0x0000000080a00000, 0x0000000084380000, 0x00000000d5900000) object space 58880K, 14% used [0x0000000080a00000,0x00000000812608c8,0x0000000084380000) Metaspace used 28112K, capacity 29006K, committed 29312K, reserved 1075200K class space used 3616K, capacity 3849K, committed 3968K, reserved 1048576K Event: 3.550 GC heap after Heap after GC invocations=6 (full 1): PSYoungGen total 138240K, used 5088K [0x00000000d5900000, 0x00000000e4400000, 0x0000000100000000) eden space 133120K, 0% used [0x00000000d5900000,0x00000000d5900000,0x00000000ddb00000) from space 5120K, 99% used [0x00000000ddb00000,0x00000000ddff8020,0x00000000de000000) to space 13824K, 0% used [0x00000000e3680000,0x00000000e3680000,0x00000000e4400000) ParOldGen total 58880K, used 15753K [0x0000000080a00000, 0x0000000084380000, 0x00000000d5900000) object space 58880K, 26% used [0x0000000080a00000,0x00000000819626b8,0x0000000084380000) Metaspace used 28112K, capacity 29006K, committed 29312K, reserved 1075200K class space used 3616K, capacity 3849K, committed 3968K, reserved 1048576K } Event: 4.342 GC heap before {Heap before GC invocations=7 (full 1): PSYoungGen total 138240K, used 138208K [0x00000000d5900000, 0x00000000e4400000, 0x0000000100000000) eden space 133120K, 100% used [0x00000000d5900000,0x00000000ddb00000,0x00000000ddb00000) from space 5120K, 99% used [0x00000000ddb00000,0x00000000ddff8020,0x00000000de000000) to space 13824K, 0% used [0x00000000e3680000,0x00000000e3680000,0x00000000e4400000) ParOldGen total 58880K, used 15753K [0x0000000080a00000, 0x0000000084380000, 0x00000000d5900000) object space 58880K, 26% used [0x0000000080a00000,0x00000000819626b8,0x0000000084380000) Metaspace used 32055K, capacity 33078K, committed 33280K, reserved 1079296K class space used 4144K, capacity 4345K, committed 4352K, reserved 1048576K Event: 4.361 GC heap after Heap after GC invocations=7 (full 1): PSYoungGen total 225280K, used 12069K [0x00000000d5900000, 0x00000000e4880000, 0x0000000100000000) eden space 211456K, 0% used [0x00000000d5900000,0x00000000d5900000,0x00000000e2780000) from space 13824K, 87% used [0x00000000e3680000,0x00000000e4249448,0x00000000e4400000) to space 15360K, 0% used [0x00000000e2780000,0x00000000e2780000,0x00000000e3680000) ParOldGen total 58880K, used 15761K [0x0000000080a00000, 0x0000000084380000, 0x00000000d5900000) object space 58880K, 26% used [0x0000000080a00000,0x00000000819646b8,0x0000000084380000) Metaspace used 32055K, capacity 33078K, committed 33280K, reserved 1079296K class space used 4144K, capacity 4345K, committed 4352K, reserved 1048576K } Event: 6.261 GC heap before {Heap before GC invocations=8 (full 1): PSYoungGen total 225280K, used 111700K [0x00000000d5900000, 0x00000000e4880000, 0x0000000100000000) eden space 211456K, 47% used [0x00000000d5900000,0x00000000dba4bda8,0x00000000e2780000) from space 13824K, 87% used [0x00000000e3680000,0x00000000e4249448,0x00000000e4400000) to space 15360K, 0% used [0x00000000e2780000,0x00000000e2780000,0x00000000e3680000) ParOldGen total 58880K, used 15761K [0x0000000080a00000, 0x0000000084380000, 0x00000000d5900000) object space 58880K, 26% used [0x0000000080a00000,0x00000000819646b8,0x0000000084380000) Metaspace used 34192K, capacity 35356K, committed 35416K, reserved 1079296K class space used 4457K, capacity 4700K, committed 4736K, reserved 1048576K Event: 6.274 GC heap after Heap after GC invocations=8 (full 1): PSYoungGen total 226816K, used 14206K [0x00000000d5900000, 0x00000000ebf00000, 0x0000000100000000) eden space 211456K, 0% used [0x00000000d5900000,0x00000000d5900000,0x00000000e2780000) from space 15360K, 92% used [0x00000000e2780000,0x00000000e355fad0,0x00000000e3680000) to space 17408K, 0% used [0x00000000eae00000,0x00000000eae00000,0x00000000ebf00000) ParOldGen total 58880K, used 15769K [0x0000000080a00000, 0x0000000084380000, 0x00000000d5900000) object space 58880K, 26% used [0x0000000080a00000,0x00000000819666b8,0x0000000084380000) Metaspace used 34192K, capacity 35356K, committed 35416K, reserved 1079296K class space used 4457K, capacity 4700K, committed 4736K, reserved 1048576K } Event: 6.274 GC heap before {Heap before GC invocations=9 (full 2): PSYoungGen total 226816K, used 14206K [0x00000000d5900000, 0x00000000ebf00000, 0x0000000100000000) eden space 211456K, 0% used [0x00000000d5900000,0x00000000d5900000,0x00000000e2780000) from space 15360K, 92% used [0x00000000e2780000,0x00000000e355fad0,0x00000000e3680000) to space 17408K, 0% used [0x00000000eae00000,0x00000000eae00000,0x00000000ebf00000) ParOldGen total 58880K, used 15769K [0x0000000080a00000, 0x0000000084380000, 0x00000000d5900000) object space 58880K, 26% used [0x0000000080a00000,0x00000000819666b8,0x0000000084380000) Metaspace used 34192K, capacity 35356K, committed 35416K, reserved 1079296K class space used 4457K, capacity 4700K, committed 4736K, reserved 1048576K Event: 6.355 GC heap after Heap after GC invocations=9 (full 2): PSYoungGen total 226816K, used 0K [0x00000000d5900000, 0x00000000ebf00000, 0x0000000100000000) eden space 211456K, 0% used [0x00000000d5900000,0x00000000d5900000,0x00000000e2780000) from space 15360K, 0% used [0x00000000e2780000,0x00000000e2780000,0x00000000e3680000) to space 17408K, 0% used [0x00000000eae00000,0x00000000eae00000,0x00000000ebf00000) ParOldGen total 96256K, used 19788K [0x0000000080a00000, 0x0000000086800000, 0x00000000d5900000) object space 96256K, 20% used [0x0000000080a00000,0x0000000081d533c8,0x0000000086800000) Metaspace used 34192K, capacity 35356K, committed 35416K, reserved 1079296K class space used 4457K, capacity 4700K, committed 4736K, reserved 1048576K } Deoptimization events (10 events): Event: 6.437 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000002e09730 method=java.util.zip.ZipCoder.getBytes(Ljava/lang/String;)[B @ 32 Event: 6.437 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000002dffeac method=java.util.zip.ZipCoder.getBytes(Ljava/lang/String;)[B @ 32 Event: 6.437 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000002e10a30 method=java.util.zip.ZipCoder.getBytes(Ljava/lang/String;)[B @ 32 Event: 6.437 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000002b1c3b0 method=java.util.zip.ZipCoder.getBytes(Ljava/lang/String;)[B @ 32 Event: 6.437 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000003678b2c method=java.net.URL.<init>(Ljava/net/URL;Ljava/lang/String;Ljava/net/URLStreamHandler;)V @ 57 Event: 6.437 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000002dd0b44 method=java.net.URLStreamHandler.parseURL(Ljava/net/URL;Ljava/lang/String;II)V @ 57 Event: 6.437 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x00000000033310f4 method=java.io.WinNTFileSystem.resolve(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String; @ 19 Event: 6.440 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000003057b4c method=java.util.Properties$LineReader.readLine()I @ 328 Event: 6.440 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000003053458 method=java.util.Properties.loadConvert([CII[C)Ljava/lang/String; @ 57 Event: 6.441 Thread 0x0000000002430000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000002f0ca9c method=java.io.WinNTFileSystem.isLetter(C)Z @ 3 Classes redefined (0 events): No events Internal exceptions (10 events): Event: 6.396 Thread 0x0000000002430000 Exception <a 'java/lang/ClassNotFoundException': org/springframework/beans/factory/AwareCustomizer> (0x00000000d613a980) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\classfile\systemDictionary.cpp, line 210 Event: 6.396 Thread 0x0000000002430000 Exception <a 'java/lang/ClassNotFoundException': org/activiti/engine/cfg/ProcessEngineConfiguratorCustomizer> (0x00000000d6161918) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\classfile\systemDictionary.cpp Event: 6.473 Thread 0x0000000002430000 Exception <a 'java/io/FileNotFoundException'> (0x00000000d6887218) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 709] Event: 6.473 Thread 0x0000000002430000 Exception <a 'java/io/FileNotFoundException'> (0x00000000d6888820) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 709] Event: 6.473 Thread 0x0000000002430000 Exception <a 'java/io/FileNotFoundException'> (0x00000000d688ac98) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 709] Event: 6.473 Thread 0x0000000002430000 Exception <a 'java/io/FileNotFoundException'> (0x00000000d688c218) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 709] Event: 6.591 Thread 0x0000000002430000 Exception <a 'java/io/FileNotFoundException'> (0x00000000d6bd48c8) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 709] Event: 6.592 Thread 0x0000000002430000 Exception <a 'java/io/FileNotFoundException'> (0x00000000d6bd5f80) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 709] Event: 6.592 Thread 0x0000000002430000 Exception <a 'java/io/FileNotFoundException'> (0x00000000d6bda2e8) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 709] Event: 6.592 Thread 0x0000000002430000 Exception <a 'java/io/FileNotFoundException'> (0x00000000d6bdb930) thrown at [C:\re\workspace\8-2-build-windows-amd64-cygwin\jdk8u171\10807\hotspot\src\share\vm\prims\jni.cpp, line 709] Events (10 events): Event: 6.460 Thread 0x0000000018a7e000 flushing nmethod 0x0000000002a75710 Event: 6.460 Thread 0x0000000018a7e000 flushing nmethod 0x0000000002a83e10 Event: 6.460 Thread 0x0000000018a7e000 flushing nmethod 0x0000000002a890d0 Event: 6.872 Executing VM operation: BulkRevokeBias Event: 6.872 Executing VM operation: BulkRevokeBias done Event: 6.963 Thread 0x0000000018ad8800 flushing nmethod 0x0000000002a75010 Event: 6.963 Thread 0x0000000018ad8800 flushing nmethod 0x0000000002a7a690 Event: 6.963 Thread 0x0000000018ad8800 flushing nmethod 0x0000000002a7ed10 Event: 6.963 Thread 0x0000000018ad8800 flushing nmethod 0x0000000002aa6510 Event: 6.963 Thread 0x0000000018ad8800 flushing nmethod 0x0000000002ab9810 Dynamic libraries: 0x000000013f7d0000 - 0x000000013f807000 C:\Program Files\Java\jdk1.8.0_171\bin\java.exe 0x0000000077940000 - 0x0000000077aea000 C:\windows\SYSTEM32\ntdll.dll 0x0000000077820000 - 0x000000007793f000 C:\windows\system32\kernel32.dll 0x000007fefd6d0000 - 0x000007fefd73a000 C:\windows\system32\KERNELBASE.dll 0x000007fefe960000 - 0x000007fefea3b000 C:\windows\system32\ADVAPI32.dll 0x000007feff970000 - 0x000007feffa0f000 C:\windows\system32\msvcrt.dll 0x000007feffa60000 - 0x000007feffa7f000 C:\windows\SYSTEM32\sechost.dll 0x000007feff560000 - 0x000007feff68d000 C:\windows\system32\RPCRT4.dll 0x0000000077720000 - 0x000000007781a000 C:\windows\system32\USER32.dll 0x000007feffbe0000 - 0x000007feffc47000 C:\windows\system32\GDI32.dll 0x000007fefe8d0000 - 0x000007fefe8de000 C:\windows\system32\LPK.dll 0x000007fefea40000 - 0x000007fefeb0a000 C:\windows\system32\USP10.dll 0x000007fefcc50000 - 0x000007fefce44000 C:\windows\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.18837_none_fa3b1e3d17594757\COMCTL32.dll 0x000007fefe8e0000 - 0x000007fefe951000 C:\windows\system32\SHLWAPI.dll 0x000007feff4d0000 - 0x000007feff4fe000 C:\windows\system32\IMM32.DLL 0x000007fefda30000 - 0x000007fefdb39000 C:\windows\system32\MSCTF.dll 0x0000000057660000 - 0x0000000057732000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\msvcr100.dll 0x00000000533a0000 - 0x0000000053c40000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\server\jvm.dll 0x000007fef9c60000 - 0x000007fef9c69000 C:\windows\system32\WSOCK32.dll 0x000007feffa10000 - 0x000007feffa5d000 C:\windows\system32\WS2_32.dll 0x000007fefed10000 - 0x000007fefed18000 C:\windows\system32\NSI.dll 0x000007fefa010000 - 0x000007fefa04b000 C:\windows\system32\WINMM.dll 0x000007fefd310000 - 0x000007fefd31c000 C:\windows\system32\VERSION.dll 0x0000000077b10000 - 0x0000000077b17000 C:\windows\system32\PSAPI.DLL 0x0000000057650000 - 0x000000005765f000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\verify.dll 0x0000000057620000 - 0x0000000057649000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\java.dll 0x000000005a120000 - 0x000000005a143000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\instrument.dll 0x0000000057600000 - 0x0000000057616000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\zip.dll 0x000007fefdb40000 - 0x000007fefe8c9000 C:\windows\system32\SHELL32.dll 0x000007feff180000 - 0x000007feff383000 C:\windows\system32\ole32.dll 0x000007fefd680000 - 0x000007fefd68f000 C:\windows\system32\profapi.dll 0x000007feda1b0000 - 0x000007feda1ca000 D:\soft\IntelliJ IDEA 2018.3\bin\breakgen64.dll 0x00000000575e0000 - 0x00000000575fa000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\net.dll 0x000007fefcf30000 - 0x000007fefcf85000 C:\windows\system32\mswsock.dll 0x000007fefca60000 - 0x000007fefca67000 C:\windows\System32\wship6.dll 0x00000000575c0000 - 0x00000000575d1000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\nio.dll 0x00000000575b0000 - 0x00000000575bd000 C:\Program Files\Java\jdk1.8.0_171\jre\bin\management.dll 0x000007fefd030000 - 0x000007fefd045000 C:\windows\system32\NLAapi.dll 0x000007fefd010000 - 0x000007fefd025000 C:\windows\system32\napinsp.dll 0x000007fefcfd0000 - 0x000007fefcfe9000 C:\windows\system32\pnrpnsp.dll 0x000007fefce50000 - 0x000007fefceab000 C:\windows\system32\DNSAPI.dll 0x000007fefcc40000 - 0x000007fefcc4b000 C:\windows\System32\winrnr.dll 0x00000000753d0000 - 0x00000000753f6000 C:\Program Files\Bonjour\mdnsNSP.dll 0x000007fefcc10000 - 0x000007fefcc37000 C:\windows\system32\Iphlpapi.DLL 0x000007fefcc00000 - 0x000007fefcc0b000 C:\windows\system32\WINNSI.DLL 0x000007fefc8d0000 - 0x000007fefc8d7000 C:\windows\System32\wshtcpip.dll 0x000007fefc740000 - 0x000007fefc748000 C:\windows\system32\rasadhlp.dll 0x000007fefa6e0000 - 0x000007fefa733000 C:\windows\System32\fwpuclnt.dll 0x000007fefcaa0000 - 0x000007fefcab8000 C:\windows\system32\CRYPTSP.dll 0x000007fefc7e0000 - 0x000007fefc827000 C:\windows\system32\rsaenh.dll 0x000007fefd7f0000 - 0x000007fefd80e000 C:\windows\system32\USERENV.dll 0x000007fefd4d0000 - 0x000007fefd4df000 C:\windows\system32\CRYPTBASE.dll 0x000007fefc9e0000 - 0x000007fefc9f1000 C:\windows\system32\dhcpcsvc6.DLL 0x000007fefc8e0000 - 0x000007fefc8f8000 C:\windows\system32\dhcpcsvc.DLL VM 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这个错误困扰了我一两个星期，一开始在网上找到了类似的问题，答案都是说电脑内存不够，加内存解决。但是我电脑虽然是8G内存，但是经常占用率才65%左右时，用idea跑junit就会报这个错，这时内存也才占用70%左右，看了下可用内存还有2G左右，按理说不可能不够呀。然后也调整过Idea本身占用内存的大小，调整过JVM的内存大小，结果都不管用。
没办法，只好仔细研究上面这一大段具体的报错信息，在这里面看有没有什么有用信息了。首先，这个里面说的
In 32 bit mode, the process size limit was hit
这句话可以无视了，因为我电脑是64位系统，java也是64位的，所以根本不可能因为32位的进程限制导致报错，这句一开始误导我很久。然后它里面说可能的解决方法，除了减少系统里内存加载外，有一条是减少java堆大小，也就是xms和xmx的值，这点我是没有想通的，一般来说都是增大这两个值，好吧，既然它里面说减小，那就试试呗。结果当然是不出所料的没用。还有一条看似可能会有效的是
Set larger code cache with -XX:ReservedCodeCacheSize=
这个在启动工程时vm参数里可以设置，但是设置了这个值后启动直接报错无法加载vm。无语。好吧，回归到报错的第一句，
The system is out of physical RAM or swap space
系统可能超出物理内存或交换空间，首先物理内存肯定没有超出，那么肯定就是交换空间超出了。什么是交换空间呢？交换空间，在Windows系统中是指虚拟内存。调整交换空间大小即设置虚拟内存大小。这样就清晰了，就是电脑的虚拟内存设的不够，于是点开我的电脑->属性->高级系统设置->高级->设置->高级里，看到虚拟内存设的大小才1G。这显然不够呀，把它调到10G后，问题完美解决！
现在内存就算占到75%时用idea跑junit也可以正常执行了！看来windows系统并不是当物理内存不够时才会用虚拟内存，这一点我一直想错了，我以为既然物理内存还够用，怎么可能会用虚拟内存。