解决：If the number of processors is expected to increase from one, then you should configure the numbe

前些天发现了一个巨牛的人工智能学习网站，通俗易懂，风趣幽默，忍不住分享一下给大家。点击跳转到教程。

1. 按官方说明用 docker 部署 rocketmq ,启动 broker 报错：

OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
/opt/rocketmq-4.2.0/bin/runbroker.sh: line 71:    22 Killed

2. 按提示找到对应文件

find / -name *runbroker.sh

查找结果有3个同名文件，我不知道是改哪个，于是3个都改了。

/var/lib/docker/overlay2/0aa7531560625ec8a0439bc215ef4628de9c8734ee83a0c503c13127ee723ee0/diff/opt/rocketmq-4.2.0/bin/runbroker.sh
/var/lib/docker/overlay2/cf56ab981f4fb785fc7a78efa1445ff605796bfa4c7f2ae2f621c5a5171408ee/merged/opt/rocketmq-4.2.0/bin/runbroker.sh
/var/lib/docker/overlay2/e0da31f0283ae25bbf6a949d2ebef676f5949f97f6001a4d4c4d63b7bece6c29/diff/opt/rocketmq-4.2.0/bin/runbroker.sh

3. 修改默认大小空间配置，原本是设置的为 4G、4G、8G，我的服务器内存没有那么大。改小就行了，见整个红框中设置。

黄框中是我改后的设置，上面注释掉的那行是原本配置。

改为：JAVA_OPT="${JAVA_OPT} -server -Xms256m -Xmx256m -Xmn128m"

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解决：If the number of processors is expected to increase from one, then you should configure the numbe

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