[tomcat调优]Tomcat7中maxThreads等于-1问题

[tomcat调优]Tomcat7中maxThreads等于-1问题

2018-04-29 17:54:55  阅读数 2083更多

分类专栏: 错误解决方案

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本文链接:https://blog.csdn.net/weixin_38278878/article/details/80144397

今天给服务器上的Tomcat进行调优,配置如下:

<span style="color:#000000"><code><span style="color:#006666 !important"><<span style="color:#4f4f4f !important">Executor</span> <span style="color:#4f4f4f !important">name</span>=<span style="color:#009900 !important">"tomcatThreadPool"</span> <span style="color:#4f4f4f !important">namePrefix</span>=<span style="color:#009900 !important">"catalina-exec-"</span>
   <span style="color:#4f4f4f !important">maxThreads</span>=<span style="color:#009900 !important">"500"</span>  <span style="color:#4f4f4f !important">minSpareThreads</span>=<span style="color:#009900 !important">"5"</span>  /></span>


<span style="color:#006666 !important"><<span style="color:#4f4f4f !important">Connector</span> <span style="color:#4f4f4f !important">executor</span>=<span style="color:#009900 !important">"tomcatThreadPool"</span> <span style="color:#4f4f4f !important">port</span>=<span style="color:#009900 !important">"8080"</span>              
    <span style="color:#4f4f4f !important">protocol</span>=<span style="color:#009900 !important">"org.apache.coyote.http11.Http11NioProtocol"</span>
    <span style="color:#4f4f4f !important">connectionTimeout</span>=<span style="color:#009900 !important">"20000"</span> <span style="color:#4f4f4f !important">redirectPort</span>=<span style="color:#009900 !important">"8443"</span> /></span></code></span>

 

将线程池可以容纳的最大线程数设为500,最小不活跃线程数设为5

结果如下: 
这里写图片描述

最小线程数设置成功,最大线程数为-1;之后将maxThreads改成了默认值200,1000等等,都是显示-1; 
难道这个属性失效了吗?

经过测试,这个属性是生效的,将其设为1后,Current thread count(当前线程数)是不会超过1的。

但为什么会显示-1呢? 查了tomcat7文档的maxThreads属性: 
这里写图片描述

最后一句话“Note that if an executor is configured any value set for this attribute will be recorded correctly but it will be reported (e.g. via JMX) as -1 to make clear that it is not used.”就说到了这个情况,意思大概是: 
如果配置了一个Executor,则该属性的任何值集将被正确记录,但是它将被显示为-1

折腾了一个多小时,终于真相大白。

 

posted @ 2019-10-26 17:36  grj001  阅读(97)  评论(0编辑  收藏  举报