我有一个运行 Centos 的 VPS，其中包含以下详细信息：
[root@XXXXXXX~]# uname -a
Linux xxxxxxxx2.6.32-042stab055.10 #1 SMP Thu May 10 15:38:32 MSD 2012 i686 i686 i386 GNU/Linux
我正在尝试从安装在其上的 tomcat 运行电子商务系统 shopizer。我曾尝试在 VPS 上构建它但没有成功，所以我在其他地方构建它并将战争文件复制到 VPS 的 tomcat 上。
我现在和构建期间面临的问题是，当我运行构建的 ant 脚本时，构建挂起。现在当我启动tomcat服务器时，其详细信息如下：
Server version: Apache Tomcat/6.0.35
Server built: Nov 28 2011 11:20:06
Server number: 6.0.35.0
OS Name: Linux
OS Version: 2.6.32-042stab055.10
Architecture: i386
JVM Version: 1.6.0_24-b24
JVM Vendor: Sun Microsystems Inc.
服务器在启动时挂起，当我进行线程转储（在这种情况下和构建情况下）时，我得到以下信息：
"GC Daemon" daemon prio=10 tid=0xa09fd000 nid=0x36ef in Object.wait() [0xa08f7000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0xa6c35a88> (a sun.misc.GC$LatencyLock)
at sun.misc.GC$Daemon.run(GC.java:117)
- locked <0xa6c35a88> (a sun.misc.GC$LatencyLock)
"Low Memory Detector" daemon prio=10 tid=0xb7686000 nid=0x36ed runnable [0x00000000]
java.lang.Thread.State: RUNNABLE
"C1 CompilerThread0" daemon prio=10 tid=0xb7684000 nid=0x36ec runnable [0x00000000]
java.lang.Thread.State: RUNNABLE
"Signal Dispatcher" daemon prio=10 tid=0xb7682800 nid=0x36eb waiting on condition [0x00000000]
java.lang.Thread.State: RUNNABLE
"Finalizer" daemon prio=10 tid=0xb7673000 nid=0x36ea in Object.wait() [0xa0ffe000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0xa6ad0b58> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:133)
- locked <0xa6ad0b58> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:149)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:177)
"Reference Handler" daemon prio=10 tid=0xb7671800 nid=0x36e9 in Object.wait() [0xa1198000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0xa6ad0a58> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:502)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
- locked <0xa6ad0a58> (a java.lang.ref.Reference$Lock)
"main" prio=10 tid=0xb7605c00 nid=0x36e7 runnable [0xb775d000]
java.lang.Thread.State: RUNNABLE
at java.lang.Byte$ByteCache.<clinit>(Byte.java:79)
at java.lang.Byte.valueOf(Byte.java:102)
- waiting on <0xa6ad0a58> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:502)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
- locked <0xa6ad0a58> (a java.lang.ref.Reference$Lock)
"main" prio=10 tid=0xb7605c00 nid=0x36e7 runnable [0xb775d000]
java.lang.Thread.State: RUNNABLE
at java.lang.Byte$ByteCache.<clinit>(Byte.java:79)
at java.lang.Byte.valueOf(Byte.java:102)
at com.opensymphony.xwork2.conversion.impl.DefaultTypeConverter.<init>(DefaultTypeConverter.java:59)
at com.opensymphony.xwork2.conversion.impl.XWorkConverter.<init>(XWorkConverter.java:186)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:419)
at com.opensymphony.xwork2.inject.ContainerBuilder$5.create(ContainerBuilder.java:207)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
- locked <0xa18cf408> (a com.opensymphony.xwork2.inject.ContainerImpl)
at com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:462)
at com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:477)
at com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:34)
at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:293)
at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:431)
at com.opensymphony.xwork2.inject.ContainerBuilder$5.create(ContainerBuilder.java:207)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
- locked <0xa18cf408> (a com.opensymphony.xwork2.inject.ContainerImpl)
at com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:462)
at com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:477)
at com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:34)
at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:293)
at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:431)
at com.opensymphony.xwork2.inject.ContainerBuilder$5.create(ContainerBuilder.java:207)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
- locked <0xa18cf408> (a com.opensymphony.xwork2.inject.ContainerImpl)
at com.opensymphony.xwork2.inject.ContainerImpl$ParameterInjector.inject(ContainerImpl.java:462)
at com.opensymphony.xwork2.inject.ContainerImpl.getParameters(ContainerImpl.java:477)
at com.opensymphony.xwork2.inject.ContainerImpl.access$000(ContainerImpl.java:34)
at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.inject(ContainerImpl.java:293)
at com.opensymphony.xwork2.inject.ContainerImpl$ConstructorInjector.construct(ContainerImpl.java:431)
at com.opensymphony.xwork2.inject.ContainerBuilder$5.create(ContainerBuilder.java:207)
at com.opensymphony.xwork2.inject.Scope$2$1.create(Scope.java:51)
- locked <0xa18cf408> (a com.opensymphony.xwork2.inject.ContainerImpl)
at com.opensymphony.xwork2.inject.ContainerBuilder$3.create(ContainerBuilder.java:93)
at com.opensymphony.xwork2.inject.ContainerBuilder$7.call(ContainerBuilder.java:487)
at com.opensymphony.xwork2.inject.ContainerBuilder$7.call(ContainerBuilder.java:484)
at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:574)
at com.opensymphony.xwork2.inject.ContainerBuilder.create(ContainerBuilder.java:484)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.createBootstrapContainer(DefaultConfiguration.java:252)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:193)
- locked <0xa37c05b0> (a com.opensymphony.xwork2.config.impl.DefaultConfiguration)
....
....
..
"VM Thread" prio=10 tid=0xb766d800 nid=0x36e8 runnable
"VM Periodic Task Thread" prio=10 tid=0xb7688400 nid=0x36ee waiting on condition
JNI global references: 911
Heap
def new generation total 39424K, used 5740K [0xa1580000, 0xa4040000, 0xa6ad0000)
eden space 35072K, 12% used [0xa1580000, 0xa19a8e88, 0xa37c0000)
from space 4352K, 34% used [0xa37c0000, 0xa3932570, 0xa3c00000)
to space 4352K, 0% used [0xa3c00000, 0xa3c00000, 0xa4040000)
tenured generation total 87424K, used 1432K [0xa6ad0000, 0xac030000, 0xb1580000)
the space 87424K, 1% used [0xa6ad0000, 0xa6c36038, 0xa6c36200, 0xac030000)
compacting perm gen total 12288K, used 11825K [0xb1580000, 0xb2180000, 0xb5580000)
the space 12288K, 96% used [0xb1580000, 0xb210c588, 0xb210c600, 0xb2180000)
No shared spaces configured.
我可以做些什么来解决这个问题，或者它是在 VPS 上运行的 java 的错误/问题？
B) jvm 有时会在同一个 VPS 上崩溃并出现以下错误：
[root@xxxxxx ~]# java
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
[root@xxxxxx ~]# free
total used free shared buffers cached
Mem: 1155072 561320 593752 0 0 317124
-/+ buffers/cache: 244196 910876
Swap: 0 0 0
对我来说很奇怪，谁能解释我这种行为。