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我正在使用 embed jetty/tomcat 对 Spring Boot 应用程序进行负载测试，但出现了奇怪的行为。我使用 apache ab 进行测试

ab -n 100000 -c 1000 http://127.0.0.1:8080/ping

Server Software:        
Server Hostname:        127.0.0.1
Server Port:            8080

Document Path:          /ping
Document Length:        2 bytes

Concurrency Level:      1000
Time taken for tests:   5.253 seconds
Complete requests:      100000
Failed requests:        0
Total transferred:      17000000 bytes
HTML transferred:       200000 bytes
Requests per second:    19038.05 [#/sec] (mean)
Time per request:       52.526 [ms] (mean)
Time per request:       0.053 [ms] (mean, across all concurrent requests)
Transfer rate:          3160.61 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0   37 222.1      0    3006
Processing:     0    7  21.9      3     855
Waiting:        0    7  21.7      3     853
Total:          0   44 228.0      4    3052

Percentage of the requests served within a certain time (ms)
  50%      4
  66%      7
  75%      9
  80%     11
  90%     22
  95%     39
  98%   1004
  99%   1017
 100%   3052 (longest request)

所以一些请求被卡在某个地方。
使用码头，我尝试了不同的值： 

_maxThreads, _minThread

与tomcat： 

max-connections, max-threads, min-spare-threads

在探查器中，我发现了下一个：

org.eclipse.jetty.util.thread.QueuedThreadPool$2.run()                16,215ms
    org.eclipse.jetty.util.thread.QueuedThreadPool.access$800
        org.eclipse.jetty.util.thread.QueuedThreadPool.iddleJobPoll
            org.eclipse.jetty.util.BlockingArrayQueue.poll            13,915ms

谢谢！

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1 回答 1

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最后，我找到了答案。一些问题每 30 秒出现一次。

负载测试

这是由于“server:tomcat:background-processor-delay”参数而发生的。

于 2017-02-24T14:57:43.260 回答