我有一个tomcat作为我的web服务器,它在给定的错误下自动停止 -
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00007f16a8405000, 12288, 0) failed; error='Cannot allocate memory' (errno=12)
我需要弄明白实际发生了什么？什么警告意味着什么？
我对GC有点困惑,当GC执行它会停止所有线程并收集垃圾引用.
在GC之后,jvm会执行任何压缩吗？
压缩:意味着移动"使用中"内存区域以消除由终止引用引起的漏洞
如果是,那么jvm是否维护旧的引用,或者它为所有剩余的对象分配新的引用？
我正在使用HttpClient处理http请求，当我尝试与目标服务器对接时，出现错误
org.apache.http.conn.ConnectTimeoutException: Connect to prdalonegk.alonegk.com:9090 timed out
prdalonegk.alonegk.com:9090我的xmpp服务器在哪里
我正在尝试在我的局域网中设置Hazelcast集群.共享一个公共数据库服务器的HAProxy后面有两个开放式服务器openfire1和openfire2.
我已经在两者上安装并配置了开火和淡化.现在,当我从群集部分的Openfire管理控制台中看到时:我的openfire1未列出群集中的其他节点.openfire2也不允许我启用集群,每当我看到错误时,我会看到以下日志:
2014.12.06 12:12:46 com.jivesoftware.util.cache.ClusteredCacheFactory - Failed to execute cluster task within 30 seconds
java.util.concurrent.TimeoutException
at com.hazelcast.spi.impl.InvocationImpl$InvocationFuture.resolveResponse(Invocati onImpl.java:466)
at com.hazelcast.spi.impl.InvocationImpl$InvocationFuture.get(InvocationImpl.java: 314)
at com.hazelcast.util.executor.DelegatingFuture.get(DelegatingFuture.java:66)
at com.jivesoftware.util.cache.ClusteredCacheFactory.doSynchronousClusterTask(Clus teredCacheFactory.java:334)
at org.jivesoftware.util.cache.CacheFactory.doSynchronousClusterTask(CacheFactory. java:586)
at org.jivesoftware.openfire.admin.system_002dclustering_jsp._jspService(system_00 2dclustering_jsp.java:123)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:547)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1359)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 8)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)
at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:74)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)
at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingF ilter.java:50)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1330)
at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:78)
Plz告诉我,如果我做错了什么？