Tomcat调优之记

最新推荐文章于 2025-10-10 19:58:58 发布

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最新推荐文章于 2025-10-10 19:58:58 发布 · 1.2k 阅读

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本文通过jmeter测试发现，当进程数达到一定数量后，Tomcat不再接受新连接。研究了Tomcat的默认配置，重点关注了accept-count、max-connections、max-threads和min-spare-threads等参数。在调整了application.properties文件的配置后，服务重启并重新压测，并发支持从200+提升到800+，优化效果显著。同时，还提及了在Spring Boot内嵌Tomcat开发中，keepAliveTimeOut和maxKeepAliveRequests两个参数对性能的影响。

使用jmeter进行测试，
发现进程数到达一定的数量之后就不会在变化了。

[root@localhost ~]# pstree -p 3793 |wc -l
219
[root@localhost ~]# pstree -p 3793 |wc -l
219
[root@localhost ~]# pstree -p 3793 |wc -l
219
[root@localhost ~]# pstree -p 3793 |wc -l

查看spring-configuration-metadata.json文件，查看Tomcat的相关默认配置

    {
      "sourceType": "org.springframework.boot.autoconfigure.web.ServerProperties$Tomcat",
      "defaultValue": 100,
      "name": "server.tomcat.accept-count",
      "description": "Maximum queue length for incoming connection requests when all possible request processing threads are in use.",
      "type": "java.lang.Integer"
    },
    {
      "sourceType": "org.springframework.boot.autoconfigure.web.ServerProperties$Tomcat$Accesslog",
      "defaultValue": true,
      "name": "server.tomcat.accesslog.buffered",
      "description": "Whether to buffer output such that it is flushed only periodically.",
      "type": "java.lang.Boolean"
    },
    {
      "sourceType": "org.springframework.boot.autoconfigure.web.ServerProperties$Tomcat$Accesslog",
      "defaultValue": "logs",
      "name": "server.tomcat.accesslog.directory",
      "description": "Directory in which log files are created. Can be absolute or relative to the Tomcat base dir.",
      "type": "java.lang.String"
    },
    {
      "sourceType": "org.springframework.boot.autoconfigure.web.ServerProperties$Tomcat$Accesslog",
      "defaultValue": false,
      "name": "server.tomcat.accesslog.enabled",
      "description": "Enable access log.",
      "type": "java.lang.Boolean"
    },
    {
      "sourceType": "org.springframework.boot.autoconfigure.web.ServerProperties$Tomcat$Accesslog",
      "defaultValue": ".yyyy-MM-dd",
      "name": "server.tomcat.accesslog.file-date-format",
      "description": "Date format to place in the log file name.",
      "type": "java.lang.String"
    },
    {
      "sourceType": "org.springframework.boot.autoconfigure.web.ServerProperties$Tomcat$Accesslog",
      "defaultValue": "common",
      "name": "server.tomcat.accesslog.pattern",
      "description": "Format pa

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