Yike Xiao

> The metrics queue size is 1M by default it can be tuned. 1M of queue size seems too large. We reduced the queue size from 1M to 100K, the...

@tisonkun @shoothzj ci needs a approval, thanks.

> 检查jvm参数xss， 建议将xss参数设置为1M。xss是jvm启动的每个线程分配的内存大小，默认JDK1.4中是256K，JDK1.5+中是1M。 We do use the default value for `xss`. According to the stacktrace, it looks like a infinite recursive call, no idea what's happened here.

Related https://bugs.openjdk.org/browse/JDK-8177031