都说hello world 很简单，应该能承受很大的请求压力，那么到底有多大？你知道吗？如果知道，那咱们就不继续了。如果不知道，我们来看一下！

1. 准备工作，快速建立一个基于springmvc的helloworld

1.1. 在pom.xml引入spring必须的包级日志组件

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.yougewe</groupId>

    <artifactId>mvn-local-test</artifactId>

    <version>1.0-SNAPSHOT</version>

    <packaging>war</packaging>

    <properties>

        <org.springframework.version>4.3.20.RELEASE</org.springframework.version>

        <freemarker.version>2.3.23</freemarker.version>

        <slf4j.version>1.7.12</slf4j.version>

        <mybatis.version>3.4.5</mybatis.version>

        <aspectj.version>1.8.13</aspectj.version>

    </properties>

    <dependencies>

            <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->

            <dependency>

                <groupId>com.alibaba</groupId>

                <artifactId>fastjson</artifactId>

                <version>1.2.44</version>

            </dependency>

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>javax.servlet-api</artifactId>

            <version>3.1.0</version>

        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-core</artifactId>

            <version>${org.springframework.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context</artifactId>

            <version>${org.springframework.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-orm</artifactId>

            <version>${org.springframework.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-web</artifactId>

            <version>${org.springframework.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-webmvc</artifactId>

            <version>${org.springframework.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-aop</artifactId>

            <version>${org.springframework.version}</version>

        </dependency>

        <dependency>

            <groupId>org.aspectj</groupId>

            <artifactId>aspectjweaver</artifactId>

            <version>1.6.8</version>

        </dependency>

            <!-- https://mvnrepository.com/artifact/junit/junit -->

            <dependency>

                <groupId>junit</groupId>

                <artifactId>junit</artifactId>

                <version>4.12</version>

                <!-- 不关注位置先 -->

                <!--<scope>test</scope>-->

            </dependency>

            <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->

            <dependency>

                <groupId>org.projectlombok</groupId>

                <artifactId>lombok</artifactId>

                <version>1.16.18</version>

                <scope>provided</scope>

            </dependency>

            <!-- https://mvnrepository.com/artifact/com.rabbitmq/amqp-client -->

            <dependency>

                <groupId>com.rabbitmq</groupId>

                <artifactId>amqp-client</artifactId>

                <version>5.1.1</version>

            </dependency>

        <!-- 配合slf4j使用  -->

        <!-- 日志记录 -->

        <dependency>

            <groupId>log4j</groupId>

            <artifactId>log4j</artifactId>

            <version>1.2.17</version>

        </dependency>

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>jcl-over-slf4j</artifactId>

            <version>${slf4j.version}</version>

        </dependency>

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-api</artifactId>

            <version>${slf4j.version}</version>

        </dependency>

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-log4j12</artifactId>

            <version>${slf4j.version}</version>

        </dependency>

        <dependency>

            <groupId>commons-logging</groupId>

            <artifactId>commons-logging</artifactId>

            <version>1.2</version>

        </dependency>

        <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->

        <dependency>

            <groupId>redis.clients</groupId>

            <artifactId>jedis</artifactId>

            <version>2.9.0</version>

        </dependency>

    </dependencies>

    <build>

        <!--<finalName>sjd-yzbank-api</finalName>-->

        <plugins>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-resources-plugin</artifactId>

                <version>2.6</version>

                <configuration>

                    <encoding>UTF-8</encoding>

                </configuration>

            </plugin>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-surefire-plugin</artifactId>

                <version>2.20.1</version>

                <configuration>

                    <skipTests>false</skipTests>

                </configuration>

            </plugin>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-surefire-report-plugin</artifactId>

                <version>2.20.1</version>

                <!--<configuration>

                    <includes>

                        <include>**/*Test.java</include>

                    </includes>

                </configuration>-->

            </plugin>

            <!-- clean插件 -->

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-clean-plugin</artifactId>

            </plugin>

            <!-- install插件 -->

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-install-plugin</artifactId>

            </plugin>

            <!-- deploy插件 -->

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-deploy-plugin</artifactId>

            </plugin>

            <!-- dependency插件 -->

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-dependency-plugin</artifactId>

            </plugin>

            <plugin>

                <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->

                <!-- 用于更好的编译，如jdk版本太低等问题 -->

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <version>3.6.1</version>

                <configuration>

                    <source>1.8</source>

                    <target>1.8</target>

                </configuration>

            </plugin>

        </plugins>

    </build>

</project>

1.2. 添加一个 web.xml, 只加一个dispatcherServlet 和一个字符集转换过滤器

    <filter>

        <filter-name>SpringEncodingFilter</filter-name>

        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <init-param>

            <param-name>encoding</param-name>

            <param-value>UTF-8</param-value>

        </init-param>

        <init-param>

            <param-name>forceEncoding</param-name>

            <param-value>true</param-value>

        </init-param>

    </filter>

    <filter-mapping>

        <filter-name>SpringEncodingFilter</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

    <!-- 防止Spring内存溢出监听器 -->

    <listener>

        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

    </listener>

    <!-- 如下 listener 会查找 WEB-INF/applicationContext.xml 文件 -->

    <!--<listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>-->

    <!-- springMVC核心配置 -->

    <servlet>

        <servlet-name>dispatcherServlet</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>classpath:applicationContext.xml</param-value>

        </init-param>

        <load-on-startup>1</load-on-startup>

    </servlet>

    <!-- 拦截设置 -->

    <servlet-mapping>

        <servlet-name>dispatcherServlet</servlet-name>

        <url-pattern>/*</url-pattern>

    </servlet-mapping>

    <welcome-file-list>

        <welcome-file>index.html</welcome-file>

        <welcome-file>index.jsp</welcome-file>

    </welcome-file-list>

1.3. 添加log4j.properties日志配置文件

log4j.rootLogger=DEBUG,console,im,logFile

log4j.additivity.org.apache=true

# 控制台(console)

log4j.appender.console=org.apache.log4j.ConsoleAppender

log4j.appender.console.Threshold=DEBUG

log4j.appender.console.ImmediateFlush=true

log4j.appender.console.Target=System.out

log4j.appender.console.layout=org.apache.log4j.PatternLayout

log4j.appender.console.layout.ConversionPattern=%d(%r) [%t] %-5p %l: %m %x %n

# 日志文件(logFile)

log4j.appender.logFile=org.apache.log4j.FileAppender

log4j.appender.logFile.Threshold=DEBUG

log4j.appender.logFile.ImmediateFlush=true

log4j.appender.logFile.Append=true

log4j.appender.logFile.File=D:/logs/log.log4j

log4j.appender.logFile.layout=org.apache.log4j.PatternLayout

log4j.appender.logFile.layout.ConversionPattern=%d(%r) [%t] %-5p %l: %m %x %n

# 回滚文件(rollingFile)

log4j.appender.rollingFile=org.apache.log4j.RollingFileAppender

log4j.appender.rollingFile.Threshold=DEBUG

log4j.appender.rollingFile.ImmediateFlush=true

log4j.appender.rollingFile.Append=true

log4j.appender.rollingFile.File=D:/logs/log.log4j

log4j.appender.rollingFile.MaxFileSize=200KB

log4j.appender.rollingFile.MaxBackupIndex=

log4j.appender.rollingFile.layout=org.apache.log4j.PatternLayout

log4j.appender.rollingFile.layout.ConversionPattern=%d(%r) [%t] %-5p %l: %m %x %n

1.4. 添加一个HelloController, 返回一个 字符串

@RestController

@RequestMapping("/hello")

public class HelloController {

    @RequestMapping(value = "/world", method = {RequestMethod.GET, RequestMethod.POST}, produces = "application/json")

    @ResponseBody

    public Object world(@ModelAttribute UserInfo info) {

        return "hello world!";

    }

}

　　好了，一切准备就绪！是时候让我们来看一下它的能力如何了！

测试工具： jmeter + 台式测试机一台

前提1:
　　机器配置: 4c8g 笔记本
　　网卡: 高通 QCA9377, 共享带宽: 100M, 网络测速: 下载:3.5MB/s 上传:475KB/s
　　web容器: tomcat7, 运行模式: apr(apache portable runtime)

压测过程如下:

　　并发100-5组连续请求, TPS: 146.2, error: 0, 平均响应时间: 0.381s, 最大响应时间: 2.44s

　　server端cpu有一瞬间的飙高，内存几乎无变化！

　　下面，按照规律，翻倍并发，200-5组连续请求！看下数据！

　　TPS增加了，为275；平均响应时间慢了点，0.429；没有 error。

　　再翻倍并发量：400-5组连续请求：

　　TPS下降了，为208；平均响应时间翻番，1.1秒；不过幸好还是没有error；

　　再翻倍并发量：800-5组连续请求：

　　TPS再次下降，为144；平均响应时间再翻番，3.6秒，这在生产环境已经不符合要求了！error仍为0；

　　再翻倍： 1600-5组： server cpu 一直高居不下，直接jvm宕机。

　　注意，此时已经有error出现了，1.09%的错误率！ TPS继续下降： 93.4，平均响应时间继续翻倍：8.9秒；

　　综上，springmvc的helloworld 能力差不多也就在1600了，因为已经有错误出现，在实际生产中已经完全不能接受了！

　　不过，我还是想看一下server到底能承受多大压力，也就是jvm完全宕机！

　　压到3000并发-5组：

　　看起来还能响应，其实再server端，jvm已经挂掉了！所以结论是，tomcat7（apr模式）是扛不住3000并发的！

jvm 宕机日志样例如下：

十二月 ,  :: 上午 org.apache.tomcat.util.net.AprEndpoint$Poller run

警告: Unexpected poller error

java.lang.NullPointerException

    at org.apache.tomcat.util.net.AprEndpoint$AprSocketWrapper.access$(AprEndpoint.java:)

    at org.apache.tomcat.util.net.AprEndpoint$Poller.run(AprEndpoint.java:)

    at java.lang.Thread.run(Thread.java:)

十二月 ,  :: 上午 org.apache.tomcat.util.net.AprEndpoint$Poller run

警告: Unexpected poller error

java.lang.NullPointerException

    at org.apache.tomcat.util.net.AprEndpoint$AprSocketWrapper.access$(AprEndpoint.java:)

    at org.apache.tomcat.util.net.AprEndpoint$Poller.run(AprEndpoint.java:)

    at java.lang.Thread.run(Thread.java:)

#

# A fatal error has been detected by the Java Runtime Environment:

#

#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000180008005, pid=, tid=0x0000000000002e34

#

# JRE version: Java(TM) SE Runtime Environment (.0_101-b13) (build 1.8.0_101-b13)

# Java VM: Java HotSpot(TM) -Bit Server VM (25.101-b13 mixed mode windows-amd64 compressed oops)

# Problematic frame:

# C  [tcnative-.dll+0x8005]

#

# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows

#

# An error report file with more information is saved as:

# D:\servers\tomcat-7.0.\bin\hs_err_pid13444.log

#

# If you would like to submit a bug report, please visit:

#   http://bugreport.java.com/bugreport/crash.jsp

# The crash happened outside the Java Virtual Machine in native code.

# See problematic frame for where to report the bug.

#

Disconnected from the target VM, address: '127.0.0.1:58835', transport: 'socket'

Disconnected from server

其中，也指示了错误记录文件：hs_err_pid13444.log，其中大概是一些线程、栈、内存、cpu的总结内容！

　　大概就是说，

#

# A fatal error has been detected by the Java Runtime Environment:

#

#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000180008005, pid=, tid=0x0000000000002e34

#

# JRE version: Java(TM) SE Runtime Environment (.0_101-b13) (build 1.8.0_101-b13)

# Java VM: Java HotSpot(TM) -Bit Server VM (25.101-b13 mixed mode windows-amd64 compressed oops)

# Problematic frame:

# C  [tcnative-.dll+0x8005]

#

# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows

#

# If you would like to submit a bug report, please visit:

#   http://bugreport.java.com/bugreport/crash.jsp

# The crash happened outside the Java Virtual Machine in native code.

# See problematic frame for where to report the bug.

#

---------------  T H R E A D  ---------------

Current thread (0x000000001a1e5800):  JavaThread "http-apr-8080-Poller" daemon [_thread_in_native, id=, stack(0x000000001c420000,0x000000001c520000)]

siginfo: ExceptionCode=0xc0000005, writing address 0x0000000000004774

Registers:

RAX=0x0000000036a64ec0, RBX=0x00000000356a2d60, RCX=0x0000000000004774, RDX=0x0000000036a64df8

RSP=0x000000001c51f010, RBP=0x00000000000025e0, RSI=0x000000000000025e, RDI=0x00000000003ae258

R8 =0x0000000000000000, R9 =0x00000000003960c0, R10=0x0000000000004000, R11=0x0000000036a64ec0

R12=0x00000000000025e8, R13=0x00057ccb27bc9160, R14=0x00000000003ae2a8, R15=0x0000000000000001

RIP=0x0000000180008005, EFLAGS=0x0000000000010246

Top of Stack: (sp=0x000000001c51f010)

0x000000001c51f010:   000000000000025e 00000000003ae258

0x000000001c51f020:   000000001c51f088 000000001c51f090

0x000000001c51f030:   000000001c51f500 0000000088a1ccb0

0x000000001c51f040:   000000001a1e5800 000000001c51f0e0

0x000000001c51f050:   0000000089172b08

0x000000001c51f060:    000000001c51f0f0

戳详情：

#

# A fatal error has been detected by the Java Runtime Environment:

#

#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000180008005, pid=, tid=0x0000000000002e34

#

# JRE version: Java(TM) SE Runtime Environment (.0_101-b13) (build 1.8.0_101-b13)

# Java VM: Java HotSpot(TM) -Bit Server VM (25.101-b13 mixed mode windows-amd64 compressed oops)

# Problematic frame:

# C  [tcnative-.dll+0x8005]

#

# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows

#

# If you would like to submit a bug report, please visit:

#   http://bugreport.java.com/bugreport/crash.jsp

# The crash happened outside the Java Virtual Machine in native code.

# See problematic frame for where to report the bug.

#

---------------  T H R E A D  ---------------

Current thread (0x000000001a1e5800):  JavaThread "http-apr-8080-Poller" daemon [_thread_in_native, id=, stack(0x000000001c420000,0x000000001c520000)]

siginfo: ExceptionCode=0xc0000005, writing address 0x0000000000004774

Registers:

RAX=0x0000000036a64ec0, RBX=0x00000000356a2d60, RCX=0x0000000000004774, RDX=0x0000000036a64df8

RSP=0x000000001c51f010, RBP=0x00000000000025e0, RSI=0x000000000000025e, RDI=0x00000000003ae258

R8 =0x0000000000000000, R9 =0x00000000003960c0, R10=0x0000000000004000, R11=0x0000000036a64ec0

R12=0x00000000000025e8, R13=0x00057ccb27bc9160, R14=0x00000000003ae2a8, R15=0x0000000000000001

RIP=0x0000000180008005, EFLAGS=0x0000000000010246

Top of Stack: (sp=0x000000001c51f010)

0x000000001c51f010:   000000000000025e 00000000003ae258

0x000000001c51f020:   000000001c51f088 000000001c51f090

0x000000001c51f030:   000000001c51f500 0000000088a1ccb0

0x000000001c51f040:   000000001a1e5800 000000001c51f0e0

0x000000001c51f050:   0000000089172b08

0x000000001c51f060:    000000001c51f0f0

0x000000001c51f070:    0000000002d9f968

0x000000001c51f080:   000000001a1e59f8 00000000000003e4

0x000000001c51f090:   00000000003aac38 0000000089033de8

0x000000001c51f0a0:   000000001c51f0c0

0x000000001c51f0b0:   36a8db6836187b68 00000000ede7bdd0

0x000000001c51f0c0:   000000008912ea98 0000000052cd606f

0x000000001c51f0d0:   01d491ce629c2dc0 000000008912ce88

0x000000001c51f0e0:   0000000088a1ccb0

0x000000001c51f0f0:   000000001c51f500 000000000389d324

0x000000001c51f100:   01d491ce629c2dc0 0000000052c569bd 

Instructions: (pc=0x0000000180008005)

0x0000000180007fe5:    8b        8b 4f  e8 ca 8a

0x0000000180007ff5:    4c 8b 5b   8b   8b    8b

0x0000000180008005:       8b    8b    8b

0x0000000180008015:   8b       8b   4c    8b 4f 

Register to memory mapping:

RAX=0x0000000036a64ec0 is an unknown value

RBX=0x00000000356a2d60 is an unknown value

RCX=0x0000000000004774 is an unknown value

RDX=0x0000000036a64df8 is an unknown value

RSP=0x000000001c51f010 is pointing into the stack for thread: 0x000000001a1e5800

RBP=0x00000000000025e0 is an unknown value

RSI=0x000000000000025e is an unknown value

RDI=0x00000000003ae258 is an unknown value

R8 =0x0000000000000000 is an unknown value

R9 =0x00000000003960c0 is an unknown value

R10=0x0000000000004000 is an unknown value

R11=0x0000000036a64ec0 is an unknown value

R12=0x00000000000025e8 is an unknown value

R13=0x00057ccb27bc9160 is an unknown value

R14=0x00000000003ae2a8 is an unknown value

R15=0x0000000000000001 is an unknown value

Stack: [0x000000001c420000,0x000000001c520000],  sp=0x000000001c51f010,  free space=1020k

Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)

C  [tcnative-.dll+0x8005]

C  0x0000000002d9f968

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)

J   org.apache.tomcat.jni.Poll.poll(JJ[JZ)I ( bytes) @ 0x0000000002d9f8e2 [0x0000000002d9f880+0x62]

J % C1 org.apache.tomcat.util.net.AprEndpoint$Poller.run()V ( bytes) @ 0x000000000389d324 [0x0000000003899ec0+0x3464]

j  java.lang.Thread.run()V+

v  ~StubRoutines::call_stub

---------------  P R O C E S S  ---------------

Java Threads: ( => current thread )

  0x0000000020785000 JavaThread "http-apr-8080-exec-770" daemon [_thread_blocked, id=, stack(0x0000000035820000,0x0000000035920000)]

  0x0000000020784800 JavaThread "http-apr-8080-exec-769" daemon [_thread_blocked, id=, stack(0x0000000035930000,0x0000000035a30000)]

  0x0000000020783800 JavaThread "http-apr-8080-exec-768" daemon [_thread_blocked, id=, stack(0x0000000034db0000,0x0000000034eb0000)]

  0x0000000020783000 JavaThread "http-apr-8080-exec-767" daemon [_thread_blocked, id=, stack(0x0000000034500000,0x0000000034600000)]

  0x0000000020782000 JavaThread "http-apr-8080-exec-766" daemon [_thread_blocked, id=, stack(0x0000000034bd0000,0x0000000034cd0000)]

  0x0000000020781800 JavaThread "http-apr-8080-exec-765" daemon [_thread_blocked, id=, stack(0x00000000348b0000,0x00000000349b0000)]

  0x0000000020780800 JavaThread "http-apr-8080-exec-764" daemon [_thread_blocked, id=, stack(0x0000000032980000,0x0000000032a80000)]

  0x0000000020780000 JavaThread "http-apr-8080-exec-763" daemon [_thread_blocked, id=, stack(0x0000000033ef0000,0x0000000033ff0000)]

  0x000000002077f000 JavaThread "http-apr-8080-exec-762" daemon [_thread_blocked, id=, stack(0x00000000347a0000,0x00000000348a0000)]

  0x000000002395f000 JavaThread "http-apr-8080-exec-761" daemon [_thread_blocked, id=, stack(0x0000000034650000,0x0000000034750000)]

  0x000000002395e000 JavaThread "http-apr-8080-exec-760" daemon [_thread_blocked, id=, stack(0x00000000343e0000,0x00000000344e0000)]

  0x000000002395d800 JavaThread "http-apr-8080-exec-759" daemon [_thread_blocked, id=, stack(0x00000000341f0000,0x00000000342f0000)]

  0x000000002395c800 JavaThread "http-apr-8080-exec-758" daemon [_thread_blocked, id=, stack(0x0000000034000000,0x0000000034100000)]

  0x000000002395c000 JavaThread "http-apr-8080-exec-757" daemon [_thread_blocked, id=, stack(0x0000000031d30000,0x0000000031e30000)]

  0x000000002395b000 JavaThread "http-apr-8080-exec-756" daemon [_thread_blocked, id=, stack(0x0000000033c50000,0x0000000033d50000)]

  0x000000002395a800 JavaThread "http-apr-8080-exec-755" daemon [_thread_blocked, id=, stack(0x0000000033dd0000,0x0000000033ed0000)]

  0x0000000023959800 JavaThread "http-apr-8080-exec-754" daemon [_thread_blocked, id=, stack(0x0000000033b30000,0x0000000033c30000)]

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  0x000000001e0c1800 JavaThread "http-apr-8080-exec-602" daemon [_thread_blocked, id=, stack(0x00000000251e0000,0x00000000252e0000)]

  0x000000001e0ba000 JavaThread "http-apr-8080-exec-601" daemon [_thread_blocked, id=, stack(0x0000000025af0000,0x0000000025bf0000)]

  0x000000001e0c5800 JavaThread "http-apr-8080-exec-600" daemon [_thread_blocked, id=, stack(0x0000000025960000,0x0000000025a60000)]

  0x000000001e2e1800 JavaThread "http-apr-8080-exec-599" daemon [_thread_blocked, id=, stack(0x0000000025760000,0x0000000025860000)]

  0x000000001e2ee000 JavaThread "http-apr-8080-exec-598" daemon [_thread_blocked, id=, stack(0x0000000025600000,0x0000000025700000)]

  0x000000001e2e8000 JavaThread "http-apr-8080-exec-597" daemon [_thread_blocked, id=, stack(0x00000000254d0000,0x00000000255d0000)]

  0x000000001e2e5800 JavaThread "http-apr-8080-exec-596" daemon [_thread_blocked, id=, stack(0x0000000025310000,0x0000000025410000)]

  0x000000001e2ee800 JavaThread "http-apr-8080-exec-595" daemon [_thread_blocked, id=, stack(0x0000000024f80000,0x0000000025080000)]

  0x000000001e2ec800 JavaThread "http-apr-8080-exec-594" daemon [_thread_blocked, id=, stack(0x00000000250c0000,0x00000000251c0000)]

  0x000000001e2e8800 JavaThread "http-apr-8080-exec-593" daemon [_thread_blocked, id=, stack(0x0000000024e10000,0x0000000024f10000)]

  0x000000001e2eb000 JavaThread "http-apr-8080-exec-592" daemon [_thread_blocked, id=, stack(0x0000000024a10000,0x0000000024b10000)]

  0x000000001e2e7000 JavaThread "http-apr-8080-exec-591" daemon [_thread_blocked, id=, stack(0x0000000024650000,0x0000000024750000)]

  0x000000001e2ea000 JavaThread "http-apr-8080-exec-590" daemon [_thread_blocked, id=, stack(0x0000000024890000,0x0000000024990000)]

  0x000000001e2eb800 JavaThread "http-apr-8080-exec-589" daemon [_thread_blocked, id=, stack(0x0000000024760000,0x0000000024860000)]

  0x000000001e2e4800 JavaThread "http-apr-8080-exec-588" daemon [_thread_blocked, id=, stack(0x000000001aaf0000,0x000000001abf0000)]

  0x000000001e2ed000 JavaThread "http-apr-8080-exec-587" daemon [_thread_blocked, id=, stack(0x0000000023370000,0x0000000023470000)]

  0x000000001e2ef800 JavaThread "http-apr-8080-exec-586" daemon [_thread_blocked, id=, stack(0x00000000244f0000,0x00000000245f0000)]

  0x000000001e2e3000 JavaThread "http-apr-8080-exec-585" daemon [_thread_blocked, id=, stack(0x0000000019260000,0x0000000019360000)]

  0x000000001e2e0000 JavaThread "http-apr-8080-exec-584" daemon [_thread_blocked, id=, stack(0x0000000021e00000,0x0000000021f00000)]

  0x000000001e2e6800 JavaThread "http-apr-8080-exec-583" daemon [_thread_blocked, id=, stack(0x0000000019c60000,0x0000000019d60000)]

  0x000000001e2e4000 JavaThread "http-apr-8080-exec-582" daemon [_thread_blocked, id=, stack(0x000000001d050000,0x000000001d150000)]

  0x000000001e2e1000 JavaThread "http-apr-8080-exec-581" daemon [_thread_blocked, id=, stack(0x000000001bdf0000,0x000000001bef0000)]

  0x000000001f38d000 JavaThread "http-apr-8080-exec-538" daemon [_thread_blocked, id=, stack(0x00000000310a0000,0x00000000311a0000)]

  0x000000001a0f2800 JavaThread "http-apr-8080-exec-531" daemon [_thread_blocked, id=, stack(0x00000000308e0000,0x00000000309e0000)]

  0x000000001a4f8000 JavaThread "http-apr-8080-exec-505" daemon [_thread_blocked, id=, stack(0x000000002e4a0000,0x000000002e5a0000)]

  0x000000001a4f6000 JavaThread "http-apr-8080-exec-502" daemon [_thread_blocked, id=, stack(0x000000002dca0000,0x000000002dda0000)]

  0x000000001ed5d000 JavaThread "http-apr-8080-exec-475" daemon [_thread_blocked, id=, stack(0x000000002b3a0000,0x000000002b4a0000)]

  0x00000000242e7000 JavaThread "http-apr-8080-exec-468" daemon [_thread_blocked, id=, stack(0x000000002a390000,0x000000002a490000)]

  0x00000000242e6000 JavaThread "http-apr-8080-exec-463" daemon [_thread_blocked, id=, stack(0x000000002a4c0000,0x000000002a5c0000)]

  0x000000001e2e9800 JavaThread "http-apr-8080-exec-441" daemon [_thread_blocked, id=, stack(0x0000000028a60000,0x0000000028b60000)]

  0x000000001e2e2800 JavaThread "http-apr-8080-exec-430" daemon [_thread_blocked, id=, stack(0x0000000026f60000,0x0000000027060000)]

  0x000000001e0b8800 JavaThread "http-apr-8080-exec-420" daemon [_thread_blocked, id=, stack(0x0000000026a30000,0x0000000026b30000)]

  0x000000001a1ea000 JavaThread "ajp-apr-8019-AsyncTimeout" daemon [_thread_blocked, id=, stack(0x000000001d150000,0x000000001d250000)]

  0x000000001a1e9000 JavaThread "ajp-apr-8019-Acceptor-0" daemon [_thread_in_native, id=, stack(0x000000001cee0000,0x000000001cfe0000)]

  0x000000001a1e8800 JavaThread "ajp-apr-8019-Poller" daemon [_thread_blocked, id=, stack(0x000000001cd30000,0x000000001ce30000)]

  0x000000001a1e7800 JavaThread "http-apr-8080-AsyncTimeout" daemon [_thread_blocked, id=, stack(0x000000001cb60000,0x000000001cc60000)]

  0x000000001a1e7000 JavaThread "http-apr-8080-Acceptor-0" daemon [_thread_in_native, id=, stack(0x000000001ca10000,0x000000001cb10000)]

  0x000000001a1e6000 JavaThread "http-apr-8080-Sendfile" daemon [_thread_blocked, id=, stack(0x000000001c8e0000,0x000000001c9e0000)]

=>0x000000001a1e5800 JavaThread "http-apr-8080-Poller" daemon [_thread_in_native, id=, stack(0x000000001c420000,0x000000001c520000)]

  0x000000001a1e4000 JavaThread "ContainerBackgroundProcessor[StandardEngine[Catalina]]" daemon [_thread_blocked, id=, stack(0x000000001c540000,0x000000001c640000)]

  0x000000001a1e3000 JavaThread "GC Daemon" daemon [_thread_blocked, id=, stack(0x000000001c0b0000,0x000000001c1b0000)]

  0x000000001a1d7800 JavaThread "RMI Scheduler(0)" daemon [_thread_blocked, id=, stack(0x000000001a970000,0x000000001aa70000)]

  0x0000000018884800 JavaThread "RMI TCP Accept-0" daemon [_thread_in_native, id=, stack(0x00000000198c0000,0x00000000199c0000)]

  0x0000000018873800 JavaThread "RMI TCP Accept-1099" daemon [_thread_in_native, id=, stack(0x0000000019b30000,0x0000000019c30000)]

  0x000000001881f800 JavaThread "RMI TCP Accept-0" daemon [_thread_in_native, id=, stack(0x0000000019620000,0x0000000019720000)]

  0x00000000185fb800 JavaThread "Service Thread" daemon [_thread_blocked, id=, stack(0x0000000019510000,0x0000000019610000)]

  0x0000000018575800 JavaThread "C1 CompilerThread2" daemon [_thread_blocked, id=, stack(0x0000000019410000,0x0000000019510000)]

  0x0000000018570000 JavaThread "C2 CompilerThread1" daemon [_thread_blocked, id=, stack(0x0000000019030000,0x0000000019130000)]

  0x000000001856a800 JavaThread "C2 CompilerThread0" daemon [_thread_blocked, id=, stack(0x0000000019160000,0x0000000019260000)]

  0x000000001855c000 JavaThread "JDWP Command Reader" daemon [_thread_in_native, id=, stack(0x0000000018ed0000,0x0000000018fd0000)]

  0x0000000018557800 JavaThread "JDWP Event Helper Thread" daemon [_thread_blocked, id=, stack(0x0000000018da0000,0x0000000018ea0000)]

  0x000000001714f000 JavaThread "JDWP Transport Listener: dt_socket" daemon [_thread_blocked, id=, stack(0x0000000018930000,0x0000000018a30000)]

  0x0000000017148800 JavaThread "Attach Listener" daemon [_thread_blocked, id=, stack(0x0000000017f40000,0x0000000018040000)]

  0x0000000017144000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=, stack(0x0000000018a90000,0x0000000018b90000)]

  0x000000001712c000 JavaThread "Finalizer" daemon [_thread_blocked, id=, stack(0x0000000018430000,0x0000000018530000)]

  0x00000000170e4800 JavaThread "Reference Handler" daemon [_thread_blocked, id=, stack(0x0000000018290000,0x0000000018390000)]

  0x0000000001e9f000 JavaThread "main" [_thread_in_native, id=, stack(0x00000000026e0000,0x00000000027e0000)]

Other Threads:

  0x00000000170dd000 VMThread [stack: 0x00000000180a0000,0x00000000181a0000] [id=]

  0x0000000018889800 WatcherThread [stack: 0x0000000019d80000,0x0000000019e80000] [id=]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap:

 PSYoungGen      total 583680K, used 465274K [0x00000000d8380000, 0x00000000ffc80000, 0x0000000100000000)

  eden space 518656K, % used [0x00000000d8380000,0x00000000f4896a70,0x00000000f7e00000)

  from space 65024K, % used [0x00000000f7e00000,0x00000000f7f48000,0x00000000fbd80000)

  to   space 62976K, % used [0x00000000fbf00000,0x00000000fbf00000,0x00000000ffc80000)

 ParOldGen       total 133632K, used 61052K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c59f140,0x0000000090c80000)

 Metaspace       used 33765K, capacity 34314K, committed 34816K, reserved 1079296K

  class space    used 3802K, capacity 4019K, committed 4096K, reserved 1048576K

Card table byte_map: [0x0000000011ba0000,0x0000000011f60000] byte_map_base: 0x000000001175b000

Marking Bits: (ParMarkBitMap*) 0x000000005325a6d0

 Begin Bits: [0x00000000127e0000, 0x00000000145b8000)

 End Bits:   [0x00000000145b8000, 0x0000000016390000)

Polling page: 0x0000000001e70000

CodeCache: size=245760Kb used=19834Kb max_used=21178Kb free=225925Kb

 bounds [0x00000000027e0000, 0x0000000003d10000, 0x00000000117e0000]

 total_blobs= nmethods= adapters=

 compilation: enabled

Compilation events ( events):

Event: 2108.116 Thread 0x0000000018575800  % !          org.apache.tomcat.util.net.AprEndpoint$Poller::run @  ( bytes)

Event: 2108.137 Thread 0x0000000018575800 nmethod % 0x0000000003cf3210 code [0x0000000003cf4080, 0x0000000003d00608]

Event: 2110.648 Thread 0x0000000018570000               java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject::addConditionWaiter ( bytes)

Event: 2110.650 Thread 0x0000000018570000 nmethod  0x0000000003aa89d0 code [0x0000000003aa8b20, 0x0000000003aa8ca8]

Event: 2121.424 Thread 0x000000001856a800               java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject::doSignal ( bytes)

Event: 2121.442 Thread 0x000000001856a800 nmethod  0x0000000003715010 code [0x0000000003715180, 0x00000000037154e8]

Event: 2125.553 Thread 0x0000000018575800               java.util.concurrent.ConcurrentHashMap::spread ( bytes)

Event: 2125.553 Thread 0x0000000018575800 nmethod  0x0000000003aa8710 code [0x0000000003aa8860, 0x0000000003aa8950]

Event: 2125.553 Thread 0x0000000018575800               java.util.concurrent.ConcurrentHashMap::get ( bytes)

Event: 2125.555 Thread 0x0000000018575800 nmethod  0x000000000362b2d0 code [0x000000000362b4e0, 0x000000000362c0b8]

GC Heap History ( events):

Event: 61.902 GC heap before

{Heap before GC invocations= (full ):

 PSYoungGen      total 572928K, used 510464K [0x00000000d8380000, 0x00000000ffa00000, 0x0000000100000000)

  eden space 510464K, % used [0x00000000d8380000,0x00000000f7600000,0x00000000f7600000)

  from space 62464K, % used [0x00000000fbd00000,0x00000000fbd00000,0x00000000ffa00000)

  to   space 67584K, % used [0x00000000f7600000,0x00000000f7600000,0x00000000fb800000)

 ParOldGen       total 133632K, used 59508K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c41d130,0x0000000090c80000)

 Metaspace       used 33530K, capacity 34122K, committed 34560K, reserved 1079296K

  class space    used 3794K, capacity 4019K, committed 4096K, reserved 1048576K

Event: 61.952 GC heap after

Heap after GC invocations= (full ):

 PSYoungGen      total 578048K, used 1568K [0x00000000d8380000, 0x0000000100000000, 0x0000000100000000)

  eden space 510464K, % used [0x00000000d8380000,0x00000000d8380000,0x00000000f7600000)

  from space 67584K, % used [0x00000000f7600000,0x00000000f7788000,0x00000000fb800000)

  to   space 67584K, % used [0x00000000fbe00000,0x00000000fbe00000,0x0000000100000000)

 ParOldGen       total 133632K, used 59516K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c41f130,0x0000000090c80000)

 Metaspace       used 33530K, capacity 34122K, committed 34560K, reserved 1079296K

  class space    used 3794K, capacity 4019K, committed 4096K, reserved 1048576K

}

Event: 90.777 GC heap before

{Heap before GC invocations= (full ):

 PSYoungGen      total 578048K, used 512032K [0x00000000d8380000, 0x0000000100000000, 0x0000000100000000)

  eden space 510464K, % used [0x00000000d8380000,0x00000000f7600000,0x00000000f7600000)

  from space 67584K, % used [0x00000000f7600000,0x00000000f7788000,0x00000000fb800000)

  to   space 67584K, % used [0x00000000fbe00000,0x00000000fbe00000,0x0000000100000000)

 ParOldGen       total 133632K, used 59516K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c41f130,0x0000000090c80000)

 Metaspace       used 33562K, capacity 34122K, committed 34560K, reserved 1079296K

  class space    used 3799K, capacity 4019K, committed 4096K, reserved 1048576K

Event: 90.819 GC heap after

Heap after GC invocations= (full ):

 PSYoungGen      total 583168K, used 640K [0x00000000d8380000, 0x00000000fff00000, 0x0000000100000000)

  eden space 516608K, % used [0x00000000d8380000,0x00000000d8380000,0x00000000f7c00000)

  from space 66560K, % used [0x00000000fbe00000,0x00000000fbea0000,0x00000000fff00000)

  to   space 67072K, % used [0x00000000f7c00000,0x00000000f7c00000,0x00000000fbd80000)

 ParOldGen       total 133632K, used 60396K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c4fb140,0x0000000090c80000)

 Metaspace       used 33562K, capacity 34122K, committed 34560K, reserved 1079296K

  class space    used 3799K, capacity 4019K, committed 4096K, reserved 1048576K

}

Event: 269.712 GC heap before

{Heap before GC invocations= (full ):

 PSYoungGen      total 583168K, used 517248K [0x00000000d8380000, 0x00000000fff00000, 0x0000000100000000)

  eden space 516608K, % used [0x00000000d8380000,0x00000000f7c00000,0x00000000f7c00000)

  from space 66560K, % used [0x00000000fbe00000,0x00000000fbea0000,0x00000000fff00000)

  to   space 67072K, % used [0x00000000f7c00000,0x00000000f7c00000,0x00000000fbd80000)

 ParOldGen       total 133632K, used 60396K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c4fb140,0x0000000090c80000)

 Metaspace       used 33593K, capacity 34122K, committed 34560K, reserved 1079296K

  class space    used 3799K, capacity 4019K, committed 4096K, reserved 1048576K

Event: 270.048 GC heap after

Heap after GC invocations= (full ):

 PSYoungGen      total 583680K, used 1088K [0x00000000d8380000, 0x00000000ffe80000, 0x0000000100000000)

  eden space 516608K, % used [0x00000000d8380000,0x00000000d8380000,0x00000000f7c00000)

  from space 67072K, % used [0x00000000f7c00000,0x00000000f7d10000,0x00000000fbd80000)

  to   space 66048K, % used [0x00000000fbe00000,0x00000000fbe00000,0x00000000ffe80000)

 ParOldGen       total 133632K, used 60452K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c509140,0x0000000090c80000)

 Metaspace       used 33593K, capacity 34122K, committed 34560K, reserved 1079296K

  class space    used 3799K, capacity 4019K, committed 4096K, reserved 1048576K

}

Event: 315.217 GC heap before

{Heap before GC invocations= (full ):

 PSYoungGen      total 583680K, used 517696K [0x00000000d8380000, 0x00000000ffe80000, 0x0000000100000000)

  eden space 516608K, % used [0x00000000d8380000,0x00000000f7c00000,0x00000000f7c00000)

  from space 67072K, % used [0x00000000f7c00000,0x00000000f7d10000,0x00000000fbd80000)

  to   space 66048K, % used [0x00000000fbe00000,0x00000000fbe00000,0x00000000ffe80000)

 ParOldGen       total 133632K, used 60452K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c509140,0x0000000090c80000)

 Metaspace       used 33601K, capacity 34122K, committed 34560K, reserved 1079296K

  class space    used 3801K, capacity 4019K, committed 4096K, reserved 1048576K

Event: 315.239 GC heap after

Heap after GC invocations= (full ):

 PSYoungGen      total 583168K, used 384K [0x00000000d8380000, 0x00000000ffd00000, 0x0000000100000000)

  eden space 518656K, % used [0x00000000d8380000,0x00000000d8380000,0x00000000f7e00000)

  from space 64512K, % used [0x00000000fbe00000,0x00000000fbe60000,0x00000000ffd00000)

  to   space 65024K, % used [0x00000000f7e00000,0x00000000f7e00000,0x00000000fbd80000)

 ParOldGen       total 133632K, used 61028K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c599140,0x0000000090c80000)

 Metaspace       used 33601K, capacity 34122K, committed 34560K, reserved 1079296K

  class space    used 3801K, capacity 4019K, committed 4096K, reserved 1048576K

}

Event: 1570.093 GC heap before

{Heap before GC invocations= (full ):

 PSYoungGen      total 583168K, used 519040K [0x00000000d8380000, 0x00000000ffd00000, 0x0000000100000000)

  eden space 518656K, % used [0x00000000d8380000,0x00000000f7e00000,0x00000000f7e00000)

  from space 64512K, % used [0x00000000fbe00000,0x00000000fbe60000,0x00000000ffd00000)

  to   space 65024K, % used [0x00000000f7e00000,0x00000000f7e00000,0x00000000fbd80000)

 ParOldGen       total 133632K, used 61028K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c599140,0x0000000090c80000)

 Metaspace       used 33675K, capacity 34250K, committed 34560K, reserved 1079296K

  class space    used 3801K, capacity 4019K, committed 4096K, reserved 1048576K

Event: 1570.102 GC heap after

Heap after GC invocations= (full ):

 PSYoungGen      total 583680K, used 1312K [0x00000000d8380000, 0x00000000ffc80000, 0x0000000100000000)

  eden space 518656K, % used [0x00000000d8380000,0x00000000d8380000,0x00000000f7e00000)

  from space 65024K, % used [0x00000000f7e00000,0x00000000f7f48000,0x00000000fbd80000)

  to   space 62976K, % used [0x00000000fbf00000,0x00000000fbf00000,0x00000000ffc80000)

 ParOldGen       total 133632K, used 61052K [0x0000000088a00000, 0x0000000090c80000, 0x00000000d8380000)

  object space 133632K, % used [0x0000000088a00000,0x000000008c59f140,0x0000000090c80000)

 Metaspace       used 33675K, capacity 34250K, committed 34560K, reserved 1079296K

  class space    used 3801K, capacity 4019K, committed 4096K, reserved 1048576K

}

Deoptimization events ( events):

Event: 388.516 Thread 0x0000000021649800 Uncommon trap: reason=unstable_if action=reinterpret pc=0x000000000331c6d4 method=java.util.concurrent.ThreadPoolExecutor.getTask()Ljava/lang/Runnable; @

Event: 901.816 Thread 0x000000001a1d7800 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000002b4bdf4 method=java.util.HashMap$HashIterator.<init>(Ljava/util/HashMap;)V @

Event: 901.816 Thread 0x000000001a1d7800 Uncommon trap: reason=unstable_if action=reinterpret pc=0x000000000366e29c method=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.addConditionWaiter()Ljava/util/concurrent/locks/AbstractQueuedSynchronizer$Node; @

Event: 2104.757 Thread 0x000000001a1e5800 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000003ce559c method=org.apache.tomcat.util.net.AprEndpoint$Poller.run()V @

Event: 2104.992 Thread 0x000000001a1e5800 Uncommon trap: reason=unstable_if action=reinterpret pc=0x0000000003a18e3c method=org.apache.tomcat.util.net.AprEndpoint$Poller.addToPoller(JI)Z @

Event: 2105.392 Thread 0x000000001a1e5800 Uncommon trap: reason=class_check action=maybe_recompile pc=0x00000000038ef390 method=java.lang.Throwable.<init>()V @

Event: 2105.399 Thread 0x000000001a1e5800 Uncommon trap: reason=class_check action=maybe_recompile pc=0x00000000038ef390 method=java.lang.Throwable.<init>()V @

Event: 2105.421 Thread 0x000000001a1e5800 Uncommon trap: reason=class_check action=maybe_recompile pc=0x00000000038ef390 method=java.lang.Throwable.<init>()V @

Event: 2125.243 Thread 0x000000001a1e7000 Uncommon trap: reason=unstable_if action=reinterpret pc=0x00000000032866a0 method=java.util.concurrent.ConcurrentHashMap.putVal(Ljava/lang/Object;Ljava/lang/Object;Z)Ljava/lang/Object; @

Event: 2125.553 Thread 0x000000001a1e5800 Uncommon trap: reason=unstable_if action=reinterpret pc=0x000000000329a180 method=java.util.concurrent.ConcurrentHashMap.get(Ljava/lang/Object;)Ljava/lang/Object; @ 

Internal exceptions ( events):

Event: 2121.066 Thread 0x000000001a1e5800 Implicit null exception at 0x00000000039f91ac to 0x00000000039f91bb

Event: 2121.066 Thread 0x000000001a1e5800 Exception <a 'java/lang/NullPointerException'> (0x00000000f4811098) thrown at [C:\re\workspace\--build-windows-amd64-cygwin\jdk8u101\\hotspot\src\share\vm\runtime\sharedRuntime.cpp, line ]

Event: 2121.069 Thread 0x000000001a1e5800 Implicit null exception at 0x00000000039f91ac to 0x00000000039f91bb

Event: 2121.070 Thread 0x000000001a1e5800 Exception <a 'java/lang/NullPointerException'> (0x00000000f481c240) thrown at [C:\re\workspace\--build-windows-amd64-cygwin\jdk8u101\\hotspot\src\share\vm\runtime\sharedRuntime.cpp, line ]

Event: 2121.100 Thread 0x000000001a1e5800 Implicit null exception at 0x00000000039f91ac to 0x00000000039f91bb

Event: 2121.101 Thread 0x000000001a1e5800 Exception <a 'java/lang/NullPointerException'> (0x00000000f4827648) thrown at [C:\re\workspace\--build-windows-amd64-cygwin\jdk8u101\\hotspot\src\share\vm\runtime\sharedRuntime.cpp, line ]

Event: 2121.104 Thread 0x000000001a1e5800 Implicit null exception at 0x00000000039f91ac to 0x00000000039f91bb

Event: 2121.104 Thread 0x000000001a1e5800 Exception <a 'java/lang/NullPointerException'> (0x00000000f4832818) thrown at [C:\re\workspace\--build-windows-amd64-cygwin\jdk8u101\\hotspot\src\share\vm\runtime\sharedRuntime.cpp, line ]

Event: 2121.108 Thread 0x000000001a1e5800 Implicit null exception at 0x00000000039f91ac to 0x00000000039f91bb

Event: 2121.108 Thread 0x000000001a1e5800 Exception <a 'java/lang/NullPointerException'> (0x00000000f483d9a8) thrown at [C:\re\workspace\--build-windows-amd64-cygwin\jdk8u101\\hotspot\src\share\vm\runtime\sharedRuntime.cpp, line ]

Events ( events):

Event: 2125.243 Thread 0x000000001a1e7000 Uncommon trap: trap_request=0xffffff65 fr.pc=0x00000000032866a0

Event: 2125.243 Thread 0x000000001a1e7000 DEOPT PACKING pc=0x00000000032866a0 sp=0x000000001cb0ec60

Event: 2125.243 Thread 0x000000001a1e7000 DEOPT UNPACKING pc=0x000000000282582a sp=0x000000001cb0ec08 mode

Event: 2125.243 loading class java/util/concurrent/ConcurrentHashMap$TreeNode

Event: 2125.244 loading class java/util/concurrent/ConcurrentHashMap$TreeNode done

Event: 2125.244 loading class java/util/concurrent/ConcurrentHashMap$TreeBin

Event: 2125.244 loading class java/util/concurrent/ConcurrentHashMap$TreeBin done

Event: 2125.552 Thread 0x000000001a1e5800 Uncommon trap: trap_request=0xffffff65 fr.pc=0x000000000329a180

Event: 2125.553 Thread 0x000000001a1e5800 DEOPT PACKING pc=0x000000000329a180 sp=0x000000001c51f380

Event: 2125.553 Thread 0x000000001a1e5800 DEOPT UNPACKING pc=0x000000000282582a sp=0x000000001c51f320 mode 

Dynamic libraries:

0x000000013f910000 - 0x000000013f947000     D:\Program Files\Java\jdk1..0_101\bin\java.exe

0x00000000774a0000 - 0x000000007764a000     C:\Windows\SYSTEM32\ntdll.dll

0x0000000077280000 - 0x000000007739f000     C:\Windows\system32\kernel32.dll

0x000007fefd2e0000 - 0x000007fefd34a000     C:\Windows\system32\KERNELBASE.dll

0x000007feff6d0000 - 0x000007feff7ab000     C:\Windows\system32\ADVAPI32.dll

0x000007fefeaf0000 - 0x000007fefeb8f000     C:\Windows\system32\msvcrt.dll

0x000007fefd6e0000 - 0x000007fefd6ff000     C:\Windows\SYSTEM32\sechost.dll

0x000007feff1e0000 - 0x000007feff30d000     C:\Windows\system32\RPCRT4.dll

0x00000000773a0000 - 0x000000007749a000     C:\Windows\system32\USER32.dll

0x000007fefed20000 - 0x000007fefed87000     C:\Windows\system32\GDI32.dll

0x000007fefed90000 - 0x000007fefed9e000     C:\Windows\system32\LPK.dll

0x000007feff110000 - 0x000007feff1da000     C:\Windows\system32\USP10.dll

0x000007fefbc40000 - 0x000007fefbe34000     C:\Windows\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.18837_none_fa3b1e3d17594757\COMCTL32.dll

0x000007feff390000 - 0x000007feff401000     C:\Windows\system32\SHLWAPI.dll

0x000007fefda70000 - 0x000007fefda9e000     C:\Windows\system32\IMM32.DLL

0x000007fefd700000 - 0x000007fefd809000     C:\Windows\system32\MSCTF.dll

0x000007fefd1a0000 - 0x000007fefd1d0000     C:\Windows\system32\nvinitx.dll

0x000007fefd190000 - 0x000007fefd19c000     C:\Windows\system32\VERSION.dll

0x00000000744c0000 - 0x00000000744c6000     C:\Program Files\NVIDIA Corporation\CoProcManager\detoured.dll

0x000007fefb190000 - 0x000007fefb1c8000     C:\Program Files\NVIDIA Corporation\CoProcManager\nvd3d9wrapx.dll

0x000007feff4f0000 - 0x000007feff6c7000     C:\Windows\system32\SETUPAPI.dll

0x000007fefd2a0000 - 0x000007fefd2d6000     C:\Windows\system32\CFGMGR32.dll

0x000007feff410000 - 0x000007feff4ea000     C:\Windows\system32\OLEAUT32.dll

0x000007fefe880000 - 0x000007fefea7c000     C:\Windows\system32\ole32.dll

0x000007fefd480000 - 0x000007fefd49a000     C:\Windows\system32\DEVOBJ.dll

0x000007fefb060000 - 0x000007fefb084000     C:\Program Files\NVIDIA Corporation\CoProcManager\nvdxgiwrapx.dll

0x000000006a3a0000 - 0x000000006a472000     D:\Program Files\Java\jdk1..0_101\jre\bin\msvcr100.dll

0x0000000052a40000 - 0x00000000532da000     D:\Program Files\Java\jdk1..0_101\jre\bin\server\jvm.dll

0x000007fefb0f0000 - 0x000007fefb0f9000     C:\Windows\system32\WSOCK32.dll

0x000007fefe830000 - 0x000007fefe87d000     C:\Windows\system32\WS2_32.dll

0x000007fefeae0000 - 0x000007fefeae8000     C:\Windows\system32\NSI.dll

0x000007fefadf0000 - 0x000007fefae2b000     C:\Windows\system32\WINMM.dll

0x0000000077670000 - 0x0000000077677000     C:\Windows\system32\PSAPI.DLL

0x000000006c230000 - 0x000000006c23f000     D:\Program Files\Java\jdk1..0_101\jre\bin\verify.dll

0x000000006c0c0000 - 0x000000006c0e9000     D:\Program Files\Java\jdk1..0_101\jre\bin\java.dll

0x000000006ba30000 - 0x000000006ba65000     D:\Program Files\Java\jdk1..0_101\jre\bin\jdwp.dll

0x000000006c030000 - 0x000000006c038000     D:\Program Files\Java\jdk1..0_101\jre\bin\npt.dll

0x000000006c1e0000 - 0x000000006c1f6000     D:\Program Files\Java\jdk1..0_101\jre\bin\zip.dll

0x000007fefdaa0000 - 0x000007fefe82a000     C:\Windows\system32\SHELL32.dll

0x000007fefd270000 - 0x000007fefd27f000     C:\Windows\system32\profapi.dll

0x000000006ba20000 - 0x000000006ba29000     D:\Program Files\Java\jdk1..0_101\jre\bin\dt_socket.dll

0x000007fefc9f0000 - 0x000007fefca45000     C:\Windows\system32\mswsock.dll

0x000007fefc3c0000 - 0x000007fefc3c7000     C:\Windows\System32\wshtcpip.dll

0x0000000073120000 - 0x000000007312d000     D:\Program Files\Java\jdk1..0_101\jre\bin\management.dll

0x000000006c1c0000 - 0x000000006c1da000     D:\Program Files\Java\jdk1..0_101\jre\bin\net.dll

0x000007fefc9e0000 - 0x000007fefc9e7000     C:\Windows\System32\wship6.dll

0x000000006be10000 - 0x000000006be21000     D:\Program Files\Java\jdk1..0_101\jre\bin\nio.dll

0x000007fefac10000 - 0x000007fefac25000     C:\Windows\system32\NLAapi.dll

0x000007feeed90000 - 0x000007feeeda5000     C:\Windows\system32\napinsp.dll

0x000007feeed70000 - 0x000007feeed89000     C:\Windows\system32\pnrpnsp.dll

0x000007fefc870000 - 0x000007fefc8cb000     C:\Windows\system32\DNSAPI.dll

0x000007feeed60000 - 0x000007feeed6b000     C:\Windows\System32\winrnr.dll

0x000007feeed50000 - 0x000007feeed60000     C:\Windows\system32\wshbth.dll

0x000007fefa030000 - 0x000007fefa057000     C:\Windows\system32\IPHLPAPI.DLL

0x000007fefa020000 - 0x000007fefa02b000     C:\Windows\system32\WINNSI.DLL

0x000007fef4580000 - 0x000007fef4588000     C:\Windows\system32\rasadhlp.dll

0x000007fef9c30000 - 0x000007fef9c83000     C:\Windows\System32\fwpuclnt.dll

0x000007fefca50000 - 0x000007fefca68000     C:\Windows\system32\CRYPTSP.dll

0x000007fefc750000 - 0x000007fefc797000     C:\Windows\system32\rsaenh.dll

0x0000000002440000 - 0x000000000245e000     C:\Windows\system32\USERENV.dll

0x000007fefd0c0000 - 0x000007fefd0cf000     C:\Windows\system32\CRYPTBASE.dll

0x000007fef9c00000 - 0x000007fef9c18000     C:\Windows\system32\dhcpcsvc.DLL

0x000007fef9be0000 - 0x000007fef9bf1000     C:\Windows\system32\dhcpcsvc6.DLL

0x0000000180000000 - 0x000000018020a000     D:\servers\tomcat-7.0.\bin\tcnative-.dll

0x0000000069dd0000 - 0x0000000069df4000     D:\Program Files\Java\jdk1..0_101\jre\bin\sunec.dll

0x000000006b9a0000 - 0x000000006b9ab000     D:\Program Files\Java\jdk1..0_101\jre\bin\sunmscapi.dll

0x000007fefd4b0000 - 0x000007fefd61d000     C:\Windows\system32\CRYPT32.dll

0x000007fefd260000 - 0x000007fefd26f000     C:\Windows\system32\MSASN1.dll

0x000007fee5320000 - 0x000007fee5445000     C:\Windows\system32\dbghelp.dll

VM Arguments:

jvm_args: -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:,suspend=y,server=n -Dcom.sun.management.jmxremote= -Dcom.sun.management.jmxremote.port= -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Djava.rmi.server.hostname=127.0.0.1 -Djdk.tls.ephemeralDHKeySize= -Djava.util.logging.config.file=C:\Users\xxx\.IntelliJIdea2016.\system\tomcat\Unnamed_mvn_test_local\conf\logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=D:\servers\tomcat-7.0.\endorsed -Dcatalina.base=C:\Users\xxx\.IntelliJIdea2016.\system\tomcat\Unnamed_mvn_test_local -Dcatalina.home=D:\servers\tomcat-7.0. -Djava.io.tmpdir=D:\servers\tomcat-7.0.\temp

java_command: org.apache.catalina.startup.Bootstrap start

java_class_path (initial): D:\servers\tomcat-7.0.\bin\bootstrap.jar;D:\servers\tomcat-7.0.\bin\tomcat-juli.jar

Launcher Type: SUN_STANDARD

Environment Variables:

JAVA_HOME=D:\Program Files\Java\jdk1..0_101

JRE_HOME=D:\Program Files\Java\jdk1..0_101

CLASSPATH=D:\servers\tomcat-7.0.\bin\bootstrap.jar;D:\servers\tomcat-7.0.\bin\tomcat-juli.jar

PATH=C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;D:\Program Files\Git\cmd;D:\Program Files\TortoiseGit\bin;D:\Program Files\Java\jdk1..0_101\bin;D:\Program Files\Java\jdk1..0_101\jre\bin;C:\Program Files\TortoiseSVN\bin;D:\Program Files\apache-maven-3.3.\bin;D:\xampp\php;C:\ProgramData\ComposerSetup\bin;D:\Program Files\nodejs\;D:\Program Files\nodejs;D:\Program Files\gradle-4.1\bin;C:\Users\xxx\AppData\Local\Programs\Python\Python36\Scripts\;C:\Users\xxx\AppData\Local\Programs\Python\Python36\;C:\Users\xxx\AppData\Roaming\Composer\vendor\bin;C:\Users\xxx\AppData\Roaming\npm;D:\Program Files\nodejs;C:\Program Files (x86)\OpenVPN\bin;C:\Users\xxx\AppData\Local\Programs\Fiddler;C:\Users\xxx\AppData\Local\Programs\Python\Python36\;

USERNAME=xxx

OS=Windows_NT

PROCESSOR_IDENTIFIER=Intel64 Family  Model  Stepping , GenuineIntel

---------------  S Y S T E M  ---------------

OS: Windows  ,  bit Build  (6.1.7601.23714)

CPU:total  ( cores per cpu,  threads per core) family  model  stepping , cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4., sse4., popcnt, avx, avx2, aes, clmul, erms, 3dnowpref, lzcnt, ht, tsc, tscinvbit, bmi1, bmi2, adx

Memory: 4k page, physical 7822340k(3261452k free), swap 15642820k(8502936k free)

vm_info: Java HotSpot(TM) -Bit Server VM (25.101-b13) for windows-amd64 JRE (1.8.0_101-b13), built on Jun   :: by "java_re" with MS VC++ 10.0 (VS2010)

time: Wed Dec  ::

elapsed time:  seconds (0d 0h 35m 25s)

　　降到2800，也依然jvm挂了！

　　降到2600，jvm没挂，但是错误量较多，由于错误导致并发只跑到12000就未能继续进行了，数据不准：

　　改了下失败策略后，2600，还是挂了，重启后可以扛住压力！

　　压到4840个请求就挂了！

　　2500并发，挂！

　　2300并发，挂！

　　2200并发，操作系统提示jre没有响应，被迫关闭java进程！

　　2000并发，挂！

　　1900并发，扛住了！cpu在80左右跳动！内存不变！

　　看来，1900还行，极限就2000吧！

　　好了，tomcat7看来是没辙了！

　　换tomcat8 的 nio 看下效果！

前提2：

　　tomcat8, nio 模式运行！

NIO介绍如下：

Java NIO: Channels and Buffers（通道和缓冲区）

标准的IO基于字节流和字符流进行操作的，而NIO是基于通道（Channel）和缓冲区（Buffer）进行操作，数据总是从通道读取到缓冲区中，或者从缓冲区写入到通道中。

Java NIO: Non-blocking IO（非阻塞IO）

Java NIO可以让你非阻塞的使用IO，例如：当线程从通道读取数据到缓冲区时，线程还是可以进行其他事情。当数据被写入到缓冲区时，线程可以继续处理它。从缓冲区写入通道也类似。

Java NIO: Selectors（选择器）

Java NIO引入了选择器的概念，选择器用于监听多个通道的事件（比如：连接打开，数据到达）。因此，单个的线程可以监听多个数据通道。

直接从2000并发开测！

并发2000-5组连续请求！

　　server ok, 但是，仍然存在数错误，有几个并发请求卡死！ TPS: 62.9, 平均响应: 14.7s。

　　server 的cpu，内存情况如下：

　　server ok, TPS: 77.2, error: 55%, 平均响应时间： 25s。只能说，服务端没死，但是基本已经不怎么可用了！

　　到最后，我压到 6000 的并发时，server 仍然没有挂掉！

　　所以，nio，是比较强悍的！

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