happy_boy 发表于 2015-8-8 13:09:39

多核CPU服务器 tomcat配置

  公司测试服务器是双核的windows server2008系统, tomcat服务器最多的时候,cpu利用率是50%,即只用了单核。如何配置server,让其充分利用cpu呢?

  (1)修改jvm配置, 使用server模式。 jre里面有client和server两个文件夹,里面的jvm.dll不同。
  (2)修改tomcat connector 配置, 加大 “acceptorThreadCount” 数值。
  参考文章:
  http://www.coderanch.com/t/492062/Tomcat/Multi-CPU-configuration-webapplication-deployed
  Make sure you use a modern VM (Java 1.6) because locking strategies improved dramatically over time.
http://java-monitor.com/forum/showthread.php?t=133
Also, start Tomcat using the -server flag.
http://java-monitor.com/forum/showthread.php?t=552
From there, use thread dumps to analyze what your code is doing. Go through them to reduce lock contention and make your code more suitable for multi-processor machines.
http://java-monitor.com/forum/showthread.php?t=317
http://java-monitor.com/forum/showthread.php?t=616
  
  http://tomcat.apache.org/tomcat-7.0-doc/config/http.html
acceptorThreadCount  The number of threads to be used to accept connections. Increase this value on a multi CPU machine, although you would never really need more than 2. Also, with a lot of non keep alive connections, you might want to increase this value as well. Default value is 1.
  
  http://forums.whirlpool.net.au/archive/971205
  http://blog.iyunv.com/maoweiwer/article/details/6117099
  http://phl.iteye.com/blog/857587
  
JDK、JRE及JVM的关系总结
  http://www.iyunv.com/apm70/archive/2012/06/05/2536804.html
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