问题描述
我正在尝试为 undertow 服务器创建多个工作线程,以便多个线程可以同时处理来自客户端的请求。 我尝试使用 UndertowOptions 和 Options 在服务器级别设置它们。尝试创建自定义 XnioWorker 并分配给 Undertow Server。
这里似乎没有任何工作,所有尝试配置工作线程。
Xnio xnio = Xnio.getInstance();
XnioWorker worker = null;
try {
worker = xnio.createWorker(
OptionMap.builder().set(Options.WORKER_IO_THREADS,50).set(Options.WORKER_TASK_CORE_THREADS,50)
.set(Options.WORKER_TASK_MAX_THREADS,50).set(Options.TCP_NODELAY,true).getMap());
} catch (Exception e) {
// Todo Auto-generated catch block
e.printstacktrace();
}
// OptionMap socketoptions = OptionMap.builder().set(Options.WORKER_IO_THREADS,10).set(Options.TCP_NODELAY,true)
// .set(Options.REUSE_ADDRESSES,true).getMap();
Undertow server = Undertow.builder().setServerOption(UndertowOptions.ENABLE_HTTP2,true)
.setServerOption(UndertowOptions.HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS,UndertowHttp2ServerEpLevel.maxReqPerConn)
.setServerOption(UndertowOptions.MAX_CONCURRENT_REQUESTS_PER_CONNECTION,UndertowHttp2ServerEpLevel.maxReqPerConn)
.addHttpListener(port,host)
.setWorkerOption(Options.WORKER_IO_THREADS,10)
.setWorkerOption(Options.WORKER_TASK_CORE_THREADS,10)
.setWorkerThreads(UndertowHttp2ServerEpLevel.iotheads)
.setIoThreads(UndertowHttp2ServerEpLevel.iotheads)
.setWorker(worker)
.setHandler(exchange -> {
Thread.sleep(responseDelayInMs);
DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Date date = new Date();
System.out.print(dateFormat.format(date) + ",**Thread name: " + Thread.currentThread().getName());**
System.out.println(
": " + port + ",Client address is: " + exchange.getConnection().getPeerAddress().toString()
+ " TotalMsgReceived: " + ++msgCounter);
exchange.getResponseHeaders().put(Headers.CONTENT_TYPE,"application/json");
exchange.setStatusCode(returnCode);
// exchange.getResponseSender().send("Undertow Hi");
}).build();
server.start();
通过上面的代码,我看到处理程序代码总是由同一个线程执行。并且假设一个线程的 n/w 延迟为 100 毫秒,我每秒只能处理 9 个请求。这就是为什么我想要更多的线程来并发处理请求,以实现高速率。
控制台输出:
*2021/07/29 09:22:46,线程名称:XNIO-1 I/O-12:8081,客户端地址:/127.0.0.1:16002 TotalMsgReceived:534
2021/07/29 09:22:47,线程名称:XNIO-1 I/O-12:8081,客户端地址:/127.0.0.1:16002 TotalMsgReceived:535*
现在从 JMX 中,我看到线程池大小已更新为 50,但性能仍然没有改善,控制台中也没有看到多工作线程:
对此的任何看法都会有所帮助。谢谢!
解决方法
分派到工作线程
public void handleRequest(final HttpServerExchange exchange) throws Exception{
if (exchange.isInIoThread()) {
exchange.dispatch(this);
return;
}
//handler code
}
您似乎遗漏了这一部分,因为您的案例中的所有内容都在 IO 线程上运行。
您可以根据自己的用例选择 multiple overloads of dispatch method。
,以下代码可以完成工作。
Undertow server = Undertow.builder().setServerOption(UndertowOptions.ENABLE_HTTP2,true)
.setServerOption(UndertowOptions.HTTP2_SETTINGS_MAX_CONCURRENT_STREAMS,UndertowHttp2ServerEpLevelMT.maxReqPerConn)
.setServerOption(UndertowOptions.MAX_CONCURRENT_REQUESTS_PER_CONNECTION,UndertowHttp2ServerEpLevelMT.maxReqPerConn)
.addHttpListener(port,host)
.setWorkerOption(Options.WORKER_IO_THREADS,UndertowHttp2ServerEpLevelMT.iotheads)
.setWorkerOption(Options.WORKER_TASK_CORE_THREADS,UndertowHttp2ServerEpLevelMT.iotheads)
.setWorkerOption(Options.WORKER_TASK_MAX_THREADS,UndertowHttp2ServerEpLevelMT.iotheads)
.setWorkerThreads(UndertowHttp2ServerEpLevelMT.iotheads)
.setIoThreads(UndertowHttp2ServerEpLevelMT.iotheads)
.setHandler(new HttpHandler() {
@Override
public void handleRequest(final HttpServerExchange exchange) throws Exception {
if (exchange.isInIoThread()) {
exchange.dispatch(this);
return;
}
System.out.println("Port: " + port + ",Client address is: "
+ exchange.getConnection().getPeerAddress().toString());
exchange.setStatusCode(returnCode);
}
}).build();
server.start();