小编gdp*_*cil的帖子

我使用了很多客户端向服务器发送一个请求,每秒大约有1000个客户端请求,服务器的CPU很快升到600%(8个核心),并始终保持这种状态.当我使用jstack打印处理内容时,我发现SelectorImpl处于BLOCKED状态.记录如下:

nioEventLoopGroup-4-1 prio=10 tid=0x00007fef28001800 nid=0x1dbf waiting for monitor entry [0x00007fef9eec7000]
java.lang.Thread.State: BLOCKED (on object monitor)
at sun.nio.ch.EPollSelectorImpl.doSelect(Unknown Source)
- waiting to lock <0x00000000c01f1af8> (a java.lang.Object)
    at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
    - locked <0x00000000c01d9420> (a io.netty.channel.nio.SelectedSelectionKeySet)
    - locked <0x00000000c01f1948> (a java.util.Collections$UnmodifiableSet)
    - locked <0x00000000c01d92c0> (a sun.nio.ch.EPollSelectorImpl)
    at sun.nio.ch.SelectorImpl.select(Unknown Source)
    at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:635)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:319)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
    at java.lang.Thread.run(Unknown Source)

高CPU与此有关吗？另一个问题是,当我连接很多客户端时,发现一些客户端会连接,错误如下:

"nioEventLoopGroup-4-1" prio=10 tid=0x00007fef28001800 nid=0x1dbf waiting for monitor entry [0x00007fef9eec7000]
java.lang.Thread.State: BLOCKED (on object monitor)
at sun.nio.ch.EPollSelectorImpl.doSelect(Unknown Source)
- waiting to lock <0x00000000c01f1af8> (a java.lang.Object) …