Extjs Sencha Cmd 6在CentOS 7上不起作用

我不能让sencha cmd在CentOS 7上工作。安装后，我尝试：

sencha -sdk ~/EXTJS/ext-6.0.0 generate app -classic MyApp /home/boooch/test/

输出：

Sencha Cmd v6.0.2.14
[INF] Copying framework to /home/boooch/test/ext
[INF] Processing Build Descriptor : default
[INF] Using GPL Version of Ext JS version 6.0.0.640 from /home/boooch/test/ext.
[INF] The implications of using GPL version can be found here (http://www.sencha.com/products/extjs/licensing).
[INF] Starting server on port : 1841
[INF] Mapping http://localhost:1841/~cmd to /root/bin/Sencha/Cmd/6.0.2.14...
[INF] Mapping http://localhost:1841/ to /home/boooch/test...
[INF] Application available at http://localhost:1841
[INF] Loading app json manifest...


/root/bin/Sencha/Cmd/6.0.2.14/sencha: line 446:  4314 Killed              $INSTALL4J_JAVA_PREFIX "$app_java_home/bin/java" -server -Dinstall4j.jvmDir="$app_java_home" -Dexe4j.moduleName="$prg_dir/$progname" "-Dinstall4j.launcherId=159" "-Dinstall4j.swt=false" "$vmov_1" "$vmov_2" "$vmov_3" "$vmov_4" "$vmov_5" $INSTALL4J_ADD_VM_PARAMS -classpath "$local_classpath" com.install4j.runtime.launcher.UnixLauncher launch 6b5f63d9 "" "" com.sencha.command.Sencha "$@"

如果我现在尝试构建应用程序：

cd /home/boooch/test

同一问题：

Sencha Cmd v6.0.2.14
[INF] Processing Build Descriptor : default
[INF] Using GPL Version of Ext JS version 6.0.0.640 from /home/boooch/test/ext.
[INF] The implications of using GPL version can be found here (http://www.sencha.com/products/extjs/licensing).
[INF] Starting server on port : 1841
[INF] Mapping http://localhost:1841/~cmd to /root/bin/Sencha/Cmd/6.0.2.14...
[INF] Mapping http://localhost:1841/ to /home/boooch/test...
[INF] Application available at http://localhost:1841
[INF] Loading app json manifest...
[INF] Appending content to /home/boooch/test/bootstrap.js
[INF] Writing content to /home/boooch/test/bootstrap.json
/root/bin/Sencha/Cmd/6.0.2.14/sencha: line 446:  4451 Killed              $INSTALL4J_JAVA_PREFIX "$app_java_home/bin/java" -server -Dinstall4j.jvmDir="$app_java_home" -Dexe4j.moduleName="$prg_dir/$progname" "-Dinstall4j.launcherId=159" "-Dinstall4j.swt=false" "$vmov_1" "$vmov_2" "$vmov_3" "$vmov_4" "$vmov_5" $INSTALL4J_ADD_VM_PARAMS -classpath "$local_classpath" com.install4j.runtime.launcher.UnixLauncher launch 6b5f63d9 "" "" com.sencha.command.Sencha "$@"

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似乎我发现了这个问题。我的服务器是KVM，内存512 Mb。我在dmesg日志中找到了答案：

[12984.071749] Out of memory: Kill process 6633 (java) score 640 or sacrifice child
[12984.075758] Killed process 6633 (java) total-vm:3091320kB, anon-rss:330116kB, file-rss:0kB

如果我将java版本从1.8更改为1.7，则错误信息会更丰富：

#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 104988672 bytes for committing reserved memory.
# An error report file with more information is saved as:
# /tmp/jvm-6148/hs_error.log

在我的例子中，解决方案是添加交换文件。如何做到这一点：

这是：