RocketMQ报错： commit |
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RocketMQ报错： commit
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环境：
虚拟机测试环境，在向MQ推送消息发现连不上namesrv，查看 netstat -antlp | grep 9876发现namesrv进程已关闭。利用命令重启： sh /usr/local/rocketmq/rocketmq-all/bin/mqnamesrv提示报错： [root@hantest rocketmq-all]# sh /usr/local/rocketmq/rocketmq-all/bin/mqnamesrv OpenJDK 64-Bit Server VM warning: Using the DefNew young collector with the CMS collector is deprecated and will likely be removed in a future release OpenJDK 64-Bit Server VM warning: UseCMSCompactAtFullCollection is deprecated and will likely be removed in a future release. OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000006ec800000, 2147483648, 0) failed; error='Cannot allocate memory' (errno=12) 解决：定位到是内存不足错误，采用调整参数扩容。 更改 bin/runserver.sh下的参数： 将上边一行改为下面一行即可。 #JAVA_OPT="${JAVA_OPT} -server -Xms4g -Xmx4g -Xmn2g -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m" JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m"重新运行启动脚本，启动成功。 踩坑 1 注意单位不一样，将 4g改为256m而不要忘了更改m,一开始忘了改单位所以报错： OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00007f26b0a00000, 274877841408, 0) failed; error='Cannot allocate memory' (errno=12) 2 xmn要小于前面的值，不然会报错 OpenJDK 64-Bit Server VM warning: MaxNewSize (131072k) is equal to or greater than the entire heap (131072k). A new max generation size of 131008k will be used.参考： 哎，一古，金社长:博主：JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m"这个配置有问题吧，Xms和Xmx都设置为256了，Xmn搞个512，新生代的大小比整个堆都大1 年前回复 参考链接 https://www.jianshu.com/p/837b4c6aee65 https://blog.csdn.net/jiangyu1013/article/details/81486374 |
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